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Mentinis, Mihalis. "Romanticised chefs and the psychopolitics of gastroporn." Culture & Psychology 23, no. 1 (2016): 128–43. http://dx.doi.org/10.1177/1354067x15621477.
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The article discusses the figure of the celebrity chef and explores what can be called the culinary metaphorics of the self. It is argued that this ubiquitous contemporary figure is represented in terms borrowed from Romanticism, something that allows it to function in a way analogous to the Lacanian ‘Name-of-the-Father’. Furthermore, the article probes into the culinary esthetics and its relation to the production of the self. It is argued that contemporary culinary culture can be understood as a rite of passage that corresponds to certain neoliberal transitional demands in relation to the self.
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Roring, Irawati RJC, Fransine B. Manginsela, and Boyke H. Toloh. "The Existence of Intertidal Gastropods in Malalayang Beach, North Sulawesi." JURNAL ILMIAH PLATAX 1, no. 3 (2013): 132. http://dx.doi.org/10.35800/jip.1.3.2013.2571.
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ABSTRACT This study aims to determine the density, relative density and patterns of distribution of gastropods and diversity index gastropod community in the intertidal Malalayang Beach (behind Minanga Hotel), North Sulawesi. Gastropods sampling using quadratic size 0.5x0.5 m2 placed systematically and proportionally on dead coral sandy substrate mix mud, rocks slightly sandy substrate and substrate-sized stones. The results found have been changes in the number of species of the 30 species of gastropods (Manginsela, 1998) now to only 15 species. While the density of intertidal Malalayang gastropods contained 0,13 and the current range of 0.06 - 0.13 individu/m2 and relative density ranged from 2%-38.5%. Diversity index contained in the intertidal gastropod dead coral layered thin smear highest H' = 2.412 following the rocky region is H' = 2.232, and the lowest in the region b is H' = 2.059. Dispersal patterns in the intertidal gastropod are all randomized except Cypraea felina the distribution pattern of the group. Keywords : gastropod, distribution ABSTRAK Penelitian ini bertujuan mengetahui kepadatan, kepadatan relatif dan pola penyebaran dari masing-masing jenis gastropoda serta indeks keanekaragam komunitas gastropoda di intertidal Pantai Malalayang (di belakang Minanga Hotel), Propinsi Sulawesi Utara. Pengambilan contoh gastropoda menggunakan kuadrat ukuran 0.5x0.5 m2 yang ditempatkan secara sistimatis dan proporsional pada substrat karang mati berpasir campur lumpur, substrat bebatuan sedikit berpasir substrat batu-berukuran. Hasil penelitian menemukan telah terjadi perubahan jumlah spesies gastropoda dari 30 spesies (Manginsela, 1998) menjadi hanya 15 spesies. Sedangkan kepadatan gastropoda yang terdapat di intertidal pantai Malalayang dari berkisar 0,13 individu/m2 saat ini 0,06-0,13 individu/m2 dan kepadatan relatif berkisar 2% - 38,5%. Indeks keanekaragaman gastropoda yang terdapat di intertidal karang mati berlapis lumpur tipis tertinggi adalah H’ = 2,412 menyusul kawasan berbatu adalah H’ = 2,232 serta terendah kawasan pada kawasan b adalah H’ = 2,059. Pola penyebaran gastropoda di intertidal ini semuanya acak kecuali Cypraea felina yang pola penyebarannya kelompok. Kata kunci : gastropoda, distribusi1 Bagian dari skripsi2 Mahasiswa Program Studi Manajemen Sumberdaya Perairan FPIK-UNSRAT 3 Staf pengajar Fakultas Perikanan dan Ilmu Kelautan Universitas Sam Ratulangi
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Djohar, M. Alaksmar, Farnis B. Boneka, Joshian N. W. Schaduw, Stephanus V. Mandagi, Kakaskasen A. Roeroe, and Deiske A. Sumilat. "Marine Waste Analysis And Abundance of gastropods In Mangrove Ecosystem Tongkaina, North Sulawesi." JURNAL ILMIAH PLATAX 8, no. 1 (2020): 15. http://dx.doi.org/10.35800/jip.8.1.2020.27597.
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This study aims to analyze the relation of marine debris to gastropods in the mangrove ecosystem. This research was conducted from October to December 2019 in the Tongkaina mangrove forest. The method used in this research is the line transects method with 2 different stations. Then do the data analysis of waste density, gastropod abundance index, frequency, diversity index, uniformity, and dominance. Then, analyzing a simple linear regression and correlation is performed to see the relationship between marine debris and gastropod abundance in a mangrove ecosystem. The results showed that the highest inorganic marine debris in the Tongkeina mangrove ecosystem is plastic and followed by cloth, wood, metal and the least was glass. The species of Gastropods found in the mangrove ecosystem are Littoraria scabra, Nerita undulata and Terebralia sulcata. The highest abundance of gastropod species was found at station 2 in transects 1 by Littoraria scraba. The results of the linear regression analysis show that there is a relationship between waste and abundance of gastropods. The increasing amount of waste, lower the abundance of gastropods. Where the correlation value is -0.20506.Keywords: Correlation; Marine debris; Gastropods; Mangrove Ecosystem. ABSTRAKPenelitian ini bertujuan untuk menganalisis hubungan sampah laut terhadap gastropoda di ekosistem mangrove. Penelitian ini dilakukan pada bulan Oktober sampai Desember 2019 di hutan mangrove Tongkaina. Metode yang digunakan adalah metode line transek dengan 2 stasiun berbeda. Kemudian dilakukan analisa data kepadatan sampah, indeks kelimpaha gastropoda, frekuensi, indeks keanekaragaman, keseragaman dan dominasi. Selanjutnya dilakukan analisa regresi lineier sederhana serta korelasi untuk melihat hubungan yang terjadi antara sampah dan kelimpahan gastrooda. Hasil penelitian menunjukkan bahwa sampah anorganik jenis plasik yang tertinggi di ekosistem mangrove pantai Tongkaina diikuti sampah jenis Kain, Kayu, Logam dan yang paling sedikit adalah sampah jenis kaca. Jenis gastropoda yang ditemukan di ekosistem mangrove yaitu Littoraria scabra, Nerita undulata dan Terebralia sulcata. Nilai kelimpahan jenis gastropoda tertinggi terdapat di stasiun 2 di transek 1 oleh Littoraria scraba. Hasil analisa regresi linier menunjukan bahawa ada hubungan yang terjadi antara sampah dan kelimpahan gastropoda yang dilihat dari anlisis regresi linier sederhana. Semakin meningkatnya jumlah sampah maka semakin rendah kelimpahan gastropoda. Dimana nilai korelasinya sebesar -0.20506.Kata Kunci : Korelasi; Sampah Laut; Gastropoda; Ekosistem Mangrove.
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Buwono, Nanik Retno, Trinita Gultom, Setya Widi Ayuning, and Supriatna Supriatna. "Bioakumulasi residu pestisida pada komunitas gastropoda di perairan Sungai Kalisat, Kabupaten Malang." Depik 8, no. 3 (2019): 167–75. http://dx.doi.org/10.13170/depik.8.3.14368.
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Abstract. Gastropods can respond to pesticide pollution in the environment because their life is relatively sedentary and their movements are very limited. The character of pesticides are not selective and persistent can result in bioaccumulation of pesticide content in gastropod. Hence, the aim of the study was to determine the levels of pesticide residues that accumulate in the gastropod body at Kalisat River, Malang Regency. The pesticide residues in gastropods was measured using High Performance Liquid Chromatography (HPLC). Data were analyzed descriptively comparative or compared with the quality standards which exceeded the maximum residual limit set by the EU Pesticide Database. The results showed that pyrethroid pesticides were found with the active ingredient beta-cyfluthrin (mean 0.05 mg/g) and carbamate group with three highest active ingredients namely propoxur (average value of 0.15 mg/g), carbofuran (average value of 0.16 mg/g) and carbaryl (average value of 0.11 mg/g). Bioaccumulation factor values at all stations are greater than 1 (BAF1) that indicates the gastropods can accumulate pesticide residues.Keywords: bioaccumulation, gastropod, pesticide residues, Kalisat River Abstrak. Gastropoda dapat memberikan respon terhadap pencemaran pestisida di lingkungan karena hidupnya relatif menetap dan pergerakannya sangat terbatas. Sifat pestisida yang tidak selektif dan persisten dapat mengakibatkan terjadinya bioakumulasi atau penumpukan kandungan pestisida dalam tubuh gastropoda. Penelitian ini bertujuan untuk mengetahui kadar residu pestisida yang terakumulasi dalam tubuh gastropoda di Sungai Kalisat, Kabupaten Malang. Pengukuran residu pestisida pada gastropoda menggunakan alat High Performance Liquid Chromatography (HPLC). Hasil pengukuran menunjukkan bahwa ditemukan pestisida golongan piretroid dengan bahan aktif jenis beta siflutrin (rerata 0,05 mg/g) dan golongan karbamat dengan tiga jenis bahan aktif tertinggi, yaitu propoksur (rerata 0,15 mg/g), karbofuran (rerata 0,16 mg/g) dan karbaril (rerata 0,11 mg/g). Data dianalisis secara deskriptif komparatif atau dibandingan dengan baku mutu EU Pesticide Database tahun 2019 telah melebihi batas maksimum residu yang ditetapkan oleh EU Pesticide Database. Nilai faktor bioakumulasi pada seluruh stasiun lebih besar dari 1 (BAF1) yang menunjukkan bahwa gastropoda mampu mengakumulasi residu pestisida. Pestisida dapat ditemukan pada gastropoda dengan melalui difusi langsung dari lingkungan dan juga melalui proses pencernaan gastropoda. Kata kunci: bioakumulasi, gastropoda, residu pestisida, Sungai Kalisat
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Saripantung, Gladys L., Jan FWS Tamanampo, and Gaspar Manu. "Community Structure of Gastropod in Seagrass on Intertidal Area in The Tongkeina Village of Manado City." JURNAL ILMIAH PLATAX 1, no. 3 (2013): 102. http://dx.doi.org/10.35800/jip.1.3.2013.2567.
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ABSTRACT Gastropod community is one of the important components of the food chain in the seagrass beds. The purpose of this study is to identify the types of gastropods and to determine population density, relative population density, species diversity, dominance and species associations of gastropod community at three study sites in Tongkeina, Manado city. The study sites were Bahowo, Batu Meja and Rap-Rap. Data were collected by sampling methods using quadratic transect technique. The study was conducted from November to December 2012. Over all, 20 species of gastropods comprising 7 families in 4 orders were collected. Among all sites, the highest density of 35,64 individuals/m2 was found in Bahowo site and the lowest density of 14,84 individuals/m2 was found in Rap-Rap site. The highest relative density was found at Batu Meja site, shown by Columbella versicolor species with relative density of 55.9%. Diversity index ranged from 1,4786 (Batu Meja) – 1,9382 (Rap-Rap). Batu Meja site shown an index value of C = 0,35 which indicating that there is dominance by 2 species, i.e.Columbella vesicolor and Columbella rusticoides, in that site.Associations between gastropod species at all three locations formed either positive or zero association, whereas negative associations between gastropod populations were not found. Keywords : community structure, gastropods, seagrass, Tongkeina, Manado ABSTRAK Komunitas gastropoda merupakan salah satu komponen penting dalam rantai makanan di padang lamun. Tujuan penelitian ini adalah mengidentifikasi jenis gastropoda dan mengetahui kepadatan populasi, kepadatan relative populasi, keanekaragaman spesies, dominasi dan asosiasi antar spesies gastropoda yang telah dilakukan pada tiga lokasi penelitian di kelurahan Tongkeina kota Manado. Pengambilan data dilakukan dengan metoda sampling yang menggunakan teknik transek kuadrat. Waktu penelitian pada bulan November sampai Desember 2012. Berdasarkan hasil penelitian, diperoleh 20 spesies gastropoda yang terdiri dari 7 famili dalam 4 ordo. Kepadatan tertinggi dari semua stasiun adalah Stasiun Bahowo yakni 35,64 ind/m2, Stasiun Rap-Rap adalah stasiun yang memiliki kepadatan terendah dari ketiga stasiun penelitian yakni 14,84 ind/m2. Kepadatan relative tertinggi terdapat di Stasiun 1 (Batu Meja) yaitu pada spesies Columbella versicolor dengan kepadatan relatif 55,9 %. Indeks keanekaragaman berkisar 1,4786 (Batu Meja)–1,9382 (Rap-Rap). Stasiun Batu Meja dengan nilai indeks C=0,35 menunjukan 2 spesies yang mendominasi yakni Columbella vesicolor dan Columbella rusticoides. Asosiasi antara spesies gastropoda di ketiga lokasi membentuk asosiasi positif dan asosiasi nol, sedangkan asosiasi negative antara populasi gastropoda tidak ditemukan. Kata kunci : struktur komunitas, gastropoda, lamun, Tongkeina, Manado
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Kusuma, Erik Wijaya, Ria Azizah Tri Nuraini, and Retno Hartati. "Komposisi Jenis Gastropoda di Mangrove Desa Kaliwlingi dan Sawojajar, Jawa Tengah." Journal of Marine Research 9, no. 2 (2020): 167–74. http://dx.doi.org/10.14710/jmr.v9i2.26558.
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ABSTRAK : Desa Kaliwlingi dan Sawojajar mempunyai kawasan hutan mangrove dengan karakteristik berbeda. Kawasan hutan mangrove Kaliwlingi menjadi ekowisata mangrove sejak tahun 2016, sedangkan di Sawojajar merupakan kawasan mangrove alami. Perbedaan fungsi tersebut diduga dapat mempengaruhi keanekaragaman hayati yaitu salah satunya adalah gastropoda. Tujuan dari penelitian ini adalah untuk mengetahui struktur komunitas Gastropoda di ekosistem mangrove Desa Kaliwlingi dan Sawojajar, Kab.Brebes, Jawa Tengah. Pengambilan sampel dilakukan pada bulan Juni sampai Juli 2018. Penentuan titik sampling menggunakan metode purposive pada 3 stasiun dengan tiga kali pengulangan. Hasil penelitian menunjukan terdapat 2 subkelas yaitu Pulmonata dan Prosobranchiata, dengan 3 famili dan 9 spesies gastropoda dari 3 famili, yaitu Elliobidae; Cassidula aurisfelis (Elliobidae), C. nucleus (Elliobidae), Littoraria articulate (Littorinidae), L. carinifera (Littorinidae), L. melanostoma (Littorinidae), L. scabra (Littorinidae), Telescopium telescopium (Potamididae), Terebralia obtuse (Potamididae), T. palustris (Potaminidae). Nilai kelimpahan rata-rata gastropoda Desa Kaliwlingi dan Desa Sawojajar masing-masing 20,28 dan 16,36 Ind/m². Indeks Keanekaragaman (H’) gastropoda di kawasan mangrove Desa Kaliwlingi dan Desa Sawojajar termasuk ke dalam kategori rendah ke tinggi, sedangkan indeks keseragamannya berkategori rendah. Tidak ada jenis gastropod yang mendominasi di kawasan mangrove Kaliwlingi dan Sawojajar, dengan pola sebaran gastropoda mengelompok.ABSTRACT: Kaliwlingi and Sawojajar villages have mangrove forest areas with different characteristics. The Kaliwlingi mangrove forest area has been established as mangrove ecotourism since 2016, while in Sawojajar it is a natural mangrove area. The difference in function is thought to affect biodiversity, one of which is gastropods. The purpose of this study was to determine the structure of the Gastropoda community in the mangrove ecosystems of Kaliwlingi and Sawojajar Villages, Kab. Brebes, Central Java. Sampling was conducted in June to July 2018. Determination of the sampling points using purposive methods at 3 stations with three repetitions. The results showed that there were 2 subclasses, namely Pulmonata and Prosobranchiata, with 3 families and 9 gastropod species from 3 families, namely Elliobidae; Cassidula aurisfelis (Elliobidae), C. nucleus (Elliobidae), Littoraria articulate (Littorinidae), L. carinifera (Littorinidae), L. melanostoma (Littorinidae), L. scabra (Littorinidae), Telescopium telescopium (Potamebidide) ), T. palustris (Potaminidae). The mean abundance of gastropods in Kaliwlingi Village and Sawojajar Village were 20.28 and 16.36 Ind / m² respectively. Diversity Index (H ') of gastropods in the mangrove areas of Kaliwlingi Village and Sawojajar Village are in the low to high category, while the uniformity index is categorized as low. There is no type of gastropod that dominates in the Kaliwlingi and Sawojajar mangrove areas, and gastropod distributed as a grouped.
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Bugaleng, Cornelis Dimas, Fransine B. Manginsela, and Alex D. Kambey. "In Intertidal Gastropod community Malalayang Beach Manado North Sulawesi." JURNAL ILMIAH PLATAX 3, no. 1 (2015): 36. http://dx.doi.org/10.35800/jip.3.1.2015.13217.
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This study aims to determine the density and relative density of gastropods and diversity index of the community as well as evenness and dominance index in the intertidal beach Malalayang), Manado in North Sulawesi. Gastropods were sampled using quadrate with size 1x1m2 placed systematically and disproportionately on dead coral sandy substrate, mix mud, rocks slightly sandy substrate, and substrate-sized stones. The study found that there has been a change in the amount of 30 species of gastropod species (Manginsela, 1998) increased to 69 species. While the density of gastropods contained in the intertidal beach of Malalayangis ranging from 13,63individu / m2to currently 2,73-13,63individu / m2 and relative density ranging from 11.22% - 42.78%. Diversity index of organism is high with a value of H '= 2.81497. Evenness index of gastropods in Malalayang Beach intertidalcould be categorized fairly even and almost evenly. Meanwhile, the low dominance values C = 0.2132, indicating that the area has good conditions as a place to live, and yet there is competition, which means, food or a place is suitable for gastropods to live. The intertidal area of Malalayang Beach Manado North Sulawesi substrate are mainly in the form of sandy coral, slightly muddy and rocky. Keywords: gastropod, distribution A B S T R A K Penelitian ini bertujuan mengetahui kepadatan, kepadatan relative dari masing-masing jenis gastropoda serta indeks keanekaragam komunitas gastropoda, kemerataan dan indeks dominansi di intertidal Pantai Malalayang (di belakang Minanga Hotel), Manado Sulawesi Utara. Pengambilan contoh gastropoda menggunakan kuadrat ukuran 1x1m2 yang ditempatkan secara sistimatis dan proporsional pada substrat karang mati berpasir campur lumpur, substrat bebatuan sedikit berpasir substrat batu-berukuran. Hasil penelitian menemukan telah terjadi perubahan jumlah spesies gastropoda dari 30 spesies (Manginsela, 1998) meningkat menjadi hanya 69 spesies. Sedangkan kepadatan gastropoda yang terdapat di intertidal pantai Malalayang dari berkisar 13,63individu/m2 saat ini 2,73-13,63individu/m2 dan kepadatan relatif berkisar 11,22% - 42,78%. Keanekaragaman jenis organisme tergolong tinggi dengan nilai H’ = 2,81497. Kemerataan jenis gastropoda pada intertidan Pantai Malalayang Manado Sulawesi Utara termasuk kategori cukup merata dan hampir merata. Sedangkan, Dominasi rendah yakni nilai C = 0.2132, menunjukkan bahwa daerah tersebut memiliki kondisi yang baik sebagai tempat hidup dan belum terjadi persaingan yang berarti terhadap ruangg, makanan atau tempat hidup bagi gastropoda. Di daerah intertidal Pantai Malalayang Manado Sulawesi Utara Substrat berupa karang mati berpasir, berlumpur tipis dan berbatuan. Kata Kunci : Gastropoda, Distribusi 1Mahasiswa Program Studi MSP FPIK-UNSRAT 2Staf pengajar Fakultas Perikanan dan Ilmu Kelautan Universitas Sam Ratulangi
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Supratman, Okto, Arthur Muhammad Farhaby, and Jemi Ferizal. "KELIMPAHAN DAN KEANEKARAGAMAN GASTROPODA PADA ZONA INTERTIDAL DI PULAU BANGKA BAGIAN TIMUR." JURNAL ENGGANO 3, no. 1 (2018): 10–21. http://dx.doi.org/10.31186/jenggano.3.1.10-21.
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AbstractEnvironmental damage from anthropogenic activity will lead to a decrease in water quality, which then affects aquatic organisms including Gastropoda. So it is necessary to do a study of diversity and abundance of gastropods in East Bangka Island.The study was conducted from June to December 2017. The research locations were divided into 6 stations. Data collection of gastropods using squares of size 50 cm x 50 cm, performed by direct gastropod removal by hand, then identified in Water Resource Management Laboratory. The results of this study found 12 species of gastropods from 8 families. The families found are Cerithideidae (2 species), Cerithiidae (1 species), Cirridae (1 species), Nassariidae (2 species), Neritidae (2 species), Planaxidae (1 species), Muricidae (1 Species) and Costellariidae (2 Species ). The highest abundance of gastropods is Certhidea cingulata species with an average abundance of 124.54 ind / m2. The value of diversity index of gastropod in the eastern part of the island of Bangka categorized small, it is thought to be caused by loss of habitat as a result of mining activities at sea. Keywords: Gastropods, Diversity, Abundance, Intertidal Zone
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Chusna, Rendra Rini Rismatul, Siti Rudiyanti, and Suryanti Suryanti. "HUBUNGAN SUBSTRAT DOMINAN DENGAN KELIMPAHAN GASTROPODA PADA HUTAN MANGROVE KULONPROGO, YOGYAKARTA (The Relation of dominant substrate to Gastropods Abundance in the Mangrove Forest of Kulonprogo, Yogyakarta)." SAINTEK PERIKANAN : Indonesian Journal of Fisheries Science and Technology 13, no. 1 (2017): 19. http://dx.doi.org/10.14710/ijfst.13.1.19-23.
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Substrat mangrove terdiri atas fraksi pasir (sand), lumpur (silt), dan liat (clay). Gastropoda adalah kelompok hewan dari filum moluska yang hidup di jenis substrat dari kasar ke halus. Kelimpahan gastropoda dipengaruhi oleh substrat dasar yang merupakan habitat dari gastropoda, serta kandungan nutrien yang berbeda pada tiap fraksi akan mempengaruhi kelimpahan Gastropoda yang berada di dalamnya. Oleh karena itu, perlu dilakukan penelitian mengenai hubungan substrat dengan kelimpahan Gastropoda, karena Gastropoda salah satu faktor penting untuk menjaga keseimbangan ekologi pesisir khususnya ekositem mangrove. Penelitian dilakukan di Hutan Mangrove Kulonprogo Yogyakarta bertujuan untuk mengetahui tipe substrat, kelimpahan Gastropoda dan hubungan kedua variabel tersebut. Penelitian dilakukan pada bulan April sampai dengan Mei 2017. Metode yang digunakan adalah metode deskriptif yaitu metode penelitian yang memberikan gambaran secara sistematis, faktual, akurat mengenai faktor-faktor dan sifat-sifat dari suatu daerah atau populasi. Metode pengambilan sampel substrat dan Gastropoda menggunakan metode Purposive Sampling Method pada 3 stasiun berbeda yaitu stasiun I pada bagian dekat pemukiman penduduk, stasiun II pada bagian dekat tambak, dan stasiun III pada bagian muara sungai. Hasil penelitian menunjukkan jenis substrat pada tiap stasiun adalah lempung dan lempung berdebu yang didominasi oleh fraksi lumpur (silt) dan pasir (sand). Jenis Gastropoda yang didapatkan berasal dari genus Littoraria, Natica, Faunus, Cerithium, Neritina, Polinices, Conus, Telescopium, dan Nerita. Meningkatnya prosentase fraksi pasir (sand) dan liat (clay) akan diikuti oleh meningkatnya kelimpahan Gastropoda, sedangkan untuk fraksi lumpur (silt) akan sebaliknya yaitu meningkatnya fraksi lumpur akan diikuti oleh menurunnya kelimpahan Gastropoda. Kata kunci: Tipe Substrat, Gastropoda, Mangrove, Kulonprogo Mangrove substrates formed by sands, silts, and clays. Gastropods is a group of animals of the phylum of mollusks lives on the type of substrate from rough to smooth. Gastropod abundance is affected by substrate which habitat of gastropods and nutrients influencing the distribution of gastropods. Therefore, it needs a deeper research about the correlation of substrate and the amount of gastropods , because gastropods are the importants factor of mangrove ecosystem. The research helds in Kulonprogo Mangrove Forest, Yogyakarta, and the goals are to know the type of substrate, the amount of gastropods, and the correlation among them. This research held on April – Mei 2017. This research use descriptivemethod wich research method that provide a systematic, factual, accurate description of the factors and quality an area or population. The method on sampling sediments and gastropods is purposive sampling in 3 station. Station 1 near the settlement, station 2 near ponds, station 3 on the estuary. The results of this research shows that the sediments on every station are clay and dusty clay, which is dominated by silt,and sand fraction. The gastropods that obtained are Littoraria, Natica, Faunus, Cerithium, Neritina, Polinices, Conus, Telescopium, and Nerita. The percentage increasing on sands and clays fraction would be more gastropods. Otherwise on silts fraction.
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Gea, Liyatin, A. S. Khouw, and Ch I. Tupan. "Keanekaragaman Gastropoda Pada Habitat Lamun Di Perairan Desa Tayando Yamtel Kecamatan Tayando Tam Kota Tual." Biosel: Biology Science and Education 9, no. 2 (2020): 163. http://dx.doi.org/10.33477/bs.v9i2.1639.
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The gastropod community is an important component in the food chain in seagrass beds, where the gastropods are the detritus feeder. Research on the diversity of gastropods in seagrass habitat in the waters of Tayando Yamtel Village, Tam City, Tual District, was conducted in March-May 2018, using the quadrant linear transect method. The results of measurements of environmental parameters in Tayando Yamtel waters are: an average pH of 8.55; DO 6.59 µg / l; salinity 32.36 ‰; temperature of 29 ° C; TDS 24.7 mg / l; current velocity (0.42 m / sec) is classified as low current; and a depth of 1.5 m. Gastropod research results obtained 862 individuals consisting of 15 families and 30 species of gastropods, while for seagrass obtained 3 species namely Cymodocea rotundata, Cymodocea serrulata and Thalassia hemprichii. The highest value of composition and gastropod density at Station I was dominated by Psedeovertagus aluco species at 62.73% and 3.708 (ind / m2), while at Station II were 28.01% and 0.93 (ind / m2) and Station III were 38.46% and 0.15 (ind / m2) are dominated by Strombus gibberulus species. Based on the gastropod ecological index value, the index value of species diversity and harmony is included in the medium category and the index value of dominance is in the low category. 
 
 Keywords: Gastropoda, Seagrass, Tayando Yamtel
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Purnama, Muhammad Fajar, Alfi Kusuma Admaja, and Haslianti Haslianti. "BIVALVIA DAN GASTROPODA PERAIRAN TAWAR DI SULAWESI TENGGARA." Jurnal Penelitian Perikanan Indonesia 25, no. 3 (2019): 203. http://dx.doi.org/10.15578/jppi.25.3.2019.203-214.
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Penelitian Bivalvia dan Gastropoda air tawar di Sulawesi Tenggara dilaksanakan pada Januari-Desember 2018 di (delapan) Kabupaten/Kota di Provinsi Sulawesi Tenggara, meliputi Kota Kendari, Kabupaten Konawe Selatan, Kabupaten Bombana, Kabupaten Kolaka, Kabupaten Kolaka Utara, Kabupaten Kolaka Timur, Kabupaten Konawe dan Kabupaten Konawe Utara. Penelitian ini bertujuan untuk mengetahui komposisi jenis Gastropoda dan Bivalvia perairan tawar, diharapkan menjadi basis data tentang biodiversitas Gastropoda dan Bivalvia di Provinsi Sulawesi Tenggara. Penelitian menggunakan metode purposive randhom sampling. Pengambilan sampel dilakukan secara manual dan diawetkan dengan larutan alkohol 70%. Identifikasi jenis dilakukan di Laboratorium Fakultas Perikanan dan Ilmu Kelautan Universitas Halu Oleo Kendari. Komposisi jenis Bivalvia dan Gastropoda perairan tawar di Sulawesi Tenggara - Klaster Daratan, diperoleh 11 Famili, 19 Genus dan 102 Spesies yang terdiri dari 33 jenis dengan status identified atau teridentifikasi sampai dengan tingkat spesies dan 69 jenis berstatus unidentified atau teridentifikasi hanya sampai ketingkat genus (genus Clithon 42 jenis, genus Septaria 2 Jenis dan genus Melanoides 25 jenis). Bivalvia dan Gastropoda yang berstatus unidentified didominasi oleh famili Neritidae genus Clithon dan famili Thiaridae genus Melanoides. Sedangkan yang berstatus identified juga didominasi oleh famili Neritidae, Thiaridae, Ampullariidae dan Corbicullidae. Disimpulkan bahwa Provinsi Sulawesi Tenggara secara empirik memiliki biodiversitas gastropoda dan bivalvia air tawar yang sangat tinggi. Bivalvia and freshwater Gastropod research in Southeast Sulawesi was conducted in January-December 2018 in (eight) Regencies or municipality in Southeast Sulawesi Province, covering Kendari City, Konawe Selatan District, Bombana Regency, Kolaka Regency, Kolaka Utara Regency, Kolaka Timur Regency, Regency Konawe and Konawe Utara District. This study aims to determine the composition of freshwater gastropods and bivalves in Southeast Sulawesi Province - Mainland Clusters. This study aims to determine the composition of Gastropod and Bivalvia species of freshwater waters, is expected to be a database of Gastropod and Bivalvia biodiversity in Southeast Sulawesi Province. The study used a purposive randhom sampling method. Sampling was done manually and preserved with 70% alcohol solution. Species identification was carried out at the Laboratory of the Faculty of Fisheries and Marine Sciences, Halu Oleo University, Kendari. The composition of bivalvia and gastropoda in Southeast Sulawesi, were obtained by 11 families, 19 Genus and 102 Species, which consisted of 33 types identified or identified up to species level and 69 unidentified status types or identified only to the genus level (genus Clithon 42 species, genus Septaria 2 Type and genus Melanoides 25 species). bivalves and Gastropods with unidentified status are dominated by the family Neritidae genus Clithon and the Thiaridae family genus Melanoides, while the identified status is also dominated by the families Neritidae, Thiaridae, Ampullariidae and Corbicullidae. It was concluded that Southeast Sulawesi Province empirically has a very high biodiversity of gastropods and freshwater bivalves.
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Laraswati, Yuli, Nirwani Soenardjo, and Wilis Ari Setyati. "Komposisi dan Kelimpahan Gastropoda Pada Ekosistem Mangrove Di Desa Tireman, Kabupaten Rembang, Jawa Tengah." Journal of Marine Research 9, no. 1 (2020): 41–48. http://dx.doi.org/10.14710/jmr.v9i1.26104.
Full textAbstract:
Ekosistem mangrove mermiliki manfaat sebagai tempat mencari makan serta habitat bagi organisme, mislanya gastropoda. Gastropoda di ekosistem mangrove berperan dalam proses dekomposisi yaitu dengan mencacah daun menjadi lebih kecil, yang kemudian dilanjutkan oleh mikroorganisme. Kepadatan gastropoda dipengaruhi oleh kegiatan yang terdapat pada ekosistem dan dapat memberikan efek pada kelangsungan hidup gastropoda.Tujuan penelitian adalah untuk mengetahui struktur komunitas gastropoda pada ekosistem mangrove Desa Tireman Kecamatan Rembang, Jawa Tengah. Metode penentuan lokasi sampling menggunakan metode purposive sampling pada 3 lokasi dengan kerapatan mangrove yang berbeda. Pengambilan sampel gastropoda dilakukan dalam transek 5 x 5m dan sampel yang didapat kemudan disortir, diawetkan dan diidentifikasi. Hasil penelitian ditemukan 9 spesies gastropoda termasuk kedalam 3 famili yaitu Casidula nucleus, C. aurisfelis (Ellobiidae), Littoraria scabra, L. carinifera, L. Melanostama (Littorinidae), Cerithidea quadrata, C. cingulata, C. alata, Telescopium telescopium (Potamididae). Spesies yang paling sering ditemukan adalah Cassidula aurisfelis dan Cassidula nucleus. Nilai rata-rata kelimpahan berkisar antara 6,28 - 15,72 Ind/m2. Nilai indeks keanekaragaman termasuk ke dalam kategori rendah hingga sedang. Nilai rata-rata indeks keseragaman termasuk kedalam kategori rendah (0.15-0.27). Nilai rata-rata indeks dominansi menunjukkan tidak adanya dominansi dari spesies tertentu. Pola sebaran menunjukkan pola sebaran mengelompok dan acak. Nilai kesamaan komunitas gastropoda tergolong dalam kategori tinggi. Frekuensi kehadiran gastropoda kategori jarang hingga sangat sering. The mangrove ecosystem has benefits as a place to eat and habitat for the organism, the gastropod's missile. Gastropods in the mangrove ecosystem play a role in the decomposition process, with the smaller leaves, which are then followed by microorganisms. The density of gastropods is influenced by activities found in ecosystems and can provide an effect on the viability of gastropods. The purpose of research is to know the structure of the gastropods community in the mangrove ecosystem of Tireman Village Rembang District, Central Java. Sampling method of determining location using purposive sampling method in 3 locations with different mangrove density. The gastropod sampling is done in the 5 x 5m transect and the samples obtained are then sorted, preserved and identified. The results of the study found 9 species of gastropods included in the three families, namely Casidula nucleus, C. Aurisfelis (Ellobiidae), Littoraria scabra, L. Carinifera, L. Melanostama (Littorinidae), Cerithidea quadrata, C. cingulata, C. alata, Telescopium telescopium (Potamididae). The most commonly found species are the Cassidula aurisfelis and the Cassidula nucleus. The average value of abundance ranges between 6.28-15.72 Ind/m2. The value of diversity index belongs to low to moderate category. The average value of uniformity index is included in low category (0.15-0.27). The average value of the Dominancy index indicates the absence of dominance of a particular species. The spread pattern shows both group and random distribution patterns. The value of gastropods community similarity belongs to high category. The frequency of presence of gastropods is rare until very frequent.
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Syahrial, Syahrial, and Novita MZ Novita MZ. "INVENTARISASI MANGROVE DAN GASTROPODA DI PULAU TUNDA SERANG BANTEN, INDONESIA SERTA DISTRIBUSI SPASIAL DAN KONEKTIVITASNYA (Mangrove and Gastropods Inventarization, Spacial Distribution and Connectivity in Tunda Island Serang Banten, Indonesia)." SAINTEK PERIKANAN : Indonesian Journal of Fisheries Science and Technology 13, no. 2 (2018): 94. http://dx.doi.org/10.14710/ijfst.13.2.94-99.
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Ekosistem mangrove adalah ekosistem yang unik, sangat rentan, tetapi paling produktif diantara ekosistem lainnya. Salah satu manfaat hutan mangrove adalah sebagai tempat hidup berbagai biota pesisir dan laut. Penelitian tentang inventarisasi jenis mangrove dan biota asosiasi gastropoda serta distribusi dan konektivitasnya telah dilakukan di Pulau Tunda Serang Banten pada bulan Januari 2014 yang bertujuan untuk mendata keanekaragaman hayati di Indonesia. Stasiun 1 berada di bagian Timur pulau, sedangkan Stasiun 2 berada di bagian Selatan pulau. Data kondisi vegetasi mangrovenya dikumpulkan dengan cara membuat transek garis dan plot berukuran 10 x 10 m2, 5 x 5 m2 dan 1 x 1 m2 yang ditarik dari titik acuan (tegakan mangrove terluar) dan tegak lurus garis pantai sampai ke daratan, sedangkan data kondisi biota asosiasi gastropodanya dikumpulkan dalam plot berukuran 1 x 1 m2 yang dipasang dalam plot transek vegetasi mangrove berukuran 10 x 10 m2. Kemudian distribusi mangrove, biota asosiasi gastropoda dan konektivitasnya dianalisis menggunakan Analisis Faktorial Koresponden (AFK). Hasil penelitian menunjukan bahwa terdapat 5 jenis mangrove dan 20 jenis biota asosiasi gastropoda. Kerapatan mangrove untuk kedua stasiunnya bervariasi, dimana untuk kategori pohon dan semai kerapatan tertingginya pada bagian Selatan, sedangkan kerapatan anakan pada bagian Timur. Sementara untuk biota asosiasi (gastropoda), kepadatan tertinggi untuk kedua stasiunnya adalah L. scabra (6,31 dan 2,24 ind/m2). Distribusi jenis mangrove berdasarkan AFK dikelompokan menjadi dua kelompok, sedangkan distribusi gastropodanya menjadi 3 kelompok. Selanjutnya spesies mangrove R. apiculata memiliki hubungan yang kuat terhadap spesies gastropoda L. scabra, kemudian B. gymnorrhiza dan R. stylosa berkaitan erat dengan C. cingulata maupun T. sulcata, sedangkan R. mucronata, L. racemosa maupun S. caseolaris berkaitan erat dengan gastropoda T. palustris, N. planospira dan M. puella.Mangrove is an unique and susceptible ecosystem, but the most productive than others ecosystem. One of the mangove forest function is as a living place for many coastal and sea biota such as sea gastropods. The research is included some activity to inventory the mangrove and sea gastropod as association biota with it’s spacial distribution and connectivity. It was conducted in Tunda Island Serang Banten on January, 2014 with the aim to collect biodiversity data in Indonesia. Station one (1) is on the East part of the island, while station two (2) on the South part. The mangrove vegetations condition data were collected by line transect and plot (10 x 10 m2, 5 x 5 m2 and 1 x 1 m2) method. It is pulled from the point reference direction (the outer mangrove stand) perpendicular to the shoreline from the main land and divided into 2 (two) research station located on east and south part of the island. While, the associations biota (sea gastropod) condition data were collected by plot size method (1 x 1 m2) located on mangrove vegetation transect plot (10 x 10 m2). Mangrove and gastropods spacial distribution and it connectivity were analyzed by Correspondent Analysis Factorial (CAF) function in SPSS (Statistical Package for Social Science) software. The spacial distribution results shown there were 5 (five) mangrove species and 20 (twenty) sea gastropods. Mangrove density for both station is variated, which for the highest tree and seedling density category stranded on the South part of the island, while for sapling on the East part. While, the highest densities of L. scabra (sea gastropod) as mangrove asscociation biota are located in both station (6.31 and 2.24 ind/m2). According to CAF analysis, the mangrove species are distributed into 2 (two) groups, while, gastropods are distributed into 3 (three) groups for its connectivity measurement. The results showns that mangrove species of R. apiculata has strength relation with gastropods species as gastropoda L. scabra. Therefore, B. gymnorrhiza and R. stylosa has strength relation with C. cingulata and T. sulcata, whereas, R. mucronata, L. racemosa and S. caseolaris has strength relation with gastropoda T. palustris, N. planospira and M. puella.
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Fajeriadi, Hery, Muhammad Zaini, and Dharmono Dharmono. "Keanekaragaman Siput Ordo Mesogastropoda dan Neogastropoda pada Zona Eulitoral di Kawasan Pesisir Pulau Sembilan, Kabupaten Kotabaru." BULETIN OSEANOGRAFI MARINA 8, no. 1 (2019): 17. http://dx.doi.org/10.14710/buloma.v8i1.22544.
Full textAbstract:
Gastropoda tersebar luas di kawasan pesisir, salah satunya pesisir Pulau Sembilan Kotabaru. Kawasan ini masih tergolong alami dan terdapat terumbu karang. Beberapa titik terumbu karang mulai mengalami kerusakan. Terumbu dan batu karang di zona eulitoral merupakan habitat alami gastropoda. Gastropoda terbagi menjadi tiga ordo, dua diantaranya adalah Ordo Mesogastropoda dan Ordo Neogastropoda belum didokumentasikan. Penelitian ini bertujuan untuk melanjutkan dokumentasi spesies gastropoda (Mesogastropoda dan Neogastropoda) dan menganalisis indeks keanekaragamannya. Data dikumpulkan dengan teknik purposive sampling dengan luas plot 1 m2, sebanyak 20 plot, di sepanjang seratus meter mengikuti garis pantai. Data yang dikumpulkan adalah nama spesies dan jumlah individu setiap spesies. Berdasarkan data tersebut ditentukan indeks keanekaragaman menggunakan persamaan Shannon-Wienner. Ditemukan lima spesies dari Ordo Mesogastropoda dan dua spesies dari Ordo Neogastropoda.Indeks keanekaragaman (H’) Mesogastropoda dan Neogastropoda adalah 1.620 dengan kategori sedang, artinya ekosistem di kawasan tersebut tergolong stabil. Gastropods are widespread in the coastal area, one of which is the coast of Pulau Sembilan Kotabaru. This area is still relatively natural, and there are coral reefs. Some points of coral reefs began to suffer damage. Reefs and rocks in the eulittoral zone are natural gastropod habitats. Gastropods are divided into three orders, two of which are mesogastropod orders, and the neogastropod order has not been documented. This study aims to continue the documentation of gastropod species (Mesogastropods and Neogastropods) and analyze their diversity index. Data were collected by purposive sampling technique with a plot area of 1 m2, as many as 20 plots, along a hundred meters following the coastline. The data collected is the name of the species and the number of individuals in each species. Based on these data the diversity index is determined using the Shannon-Wiener equation. Five species of the mesogastropod order and two species of the neogastropod order were found. The Mesogastropod and Neogastropod diversity index (H') is 1,620 in the medium category, meaning that the ecosystem in the region is classified as stable.
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Talumingan, Dewanti Y., Ferdinand F. Tilaar, Jety K. Rangan, Maartinus M. Baroleh, Victor N. R. Watung, and Agung B. Windarto. "Gastropods In Mangrove Forest Of Tongkeina Village, Bunaken Sub-District, City Of Manado." JURNAL PERIKANAN DAN KELAUTAN TROPIS 10, no. 1 (2019): 1. http://dx.doi.org/10.35800/jpkt.10.1.2019.24230.
Full textAbstract:
This research aims to determine the types or species of gastropod and its distribution in mangrove forests in Tongkeina village and to know the species of mangrove in Tongkeina village. The Research was conducted on one sampling point with one 100 meters long line transect which was is laid perpendicular to the outer direction of the mangrove. To collect gastropod samples, three quadrates with a size of 10x10meters with a distance between the quadrate 5 meters were made. In the quadrate, 15 subquadrates sized 1x1meters were also made. Based on the results, there were 6 species of gastropods and two distribution patterns of i.e., Cluster the species of the Littoraria scabra, Angustassiminea castanea, Terebralia sulcate. The uniform distribution pattern is Ischinocerithium rostratum, Caliostoma jujubinum, and Nerita senegalensis. There are ten mangrove species found and the most common species is Soneratia alba with a total of 27 individuals.Keywords: Gastropods, forest, Mangrove, Tongkeina village ABSTRAKPenelitian ini bertujuan untuk mengetahui Jenis-jenis gastropoda serta persebaran pada hutan mangrove di Kelurahan Tongkeina dan untuk mengetahui Jenis-jenis mangrove di Kelurahan Tongkeina. Penelitian hanya di lakukan satu titik pengambilan sampel dimana dibuat 1 line transek dengan Panjang 100meter yang di tarik tegak lurus dari arah terluar mangrove kemudian dibuat 3 kuadrat dengan ukuran 10x10meter dengan jarak antara kuadrat 5 meter, dan di dalam kuadrat dibuat 15 subkuadrat berukuran 1x1 meter. Berdasarkan penelitian hasil ditemukan ada 6 spesies gastopoda dan dua pola persebaran Gastropoda yaitu mengelompok dan seragam, spesies mengelompok yaitu Littoraria scabra, Angustassiminea castanea, Terebralia sulcate. Pola persebaran seragam yaitu Ischinocerithium rostratum, Caliostoma jujubinum, Nerita senegalensis. Mangrove ditemukan 10 Spesies yang terbanyak adalah Soneratia alba dengan jumlah 27 individu.Kata kunci: Gastropoda, Hutan, Mangrove, Kelurahan Tongkeina.
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Talumingan, Dewanti Y., Ferdinand F. Tilaar, Jety K. Rangan, Maartinus Baroleh, Victor N. R. Watung, and Agung B. Windarto. "Gastropods In Mangrove Forest Of Tongkeina Village, Bunaken Sub-District, City Of Manado." JURNAL PERIKANAN DAN KELAUTAN TROPIS 10, no. 1 (2019): 1. http://dx.doi.org/10.35800/jpkt.10.1.2019.25032.
Full textAbstract:
This research aims to determine the types or species of gastropod and its distribution in mangrove forests in Tongkeina village and to know the species of mangrove in Tongkeina village. The Research was conducted on one sampling point with one 100 meters long line transect which was is laid perpendicular to the outer direction of the mangrove. To collect gastropod samples, three quadrates with a size of 10x10meters with a distance between the quadrate 5 meters were made. In the quadrate, 15 subquadrates sized 1x1meters were also made. Based on the results, there were 6 species of gastropods and two distribution patterns of i.e., Cluster the species of the Littoraria scabra, Angustassiminea castanea, Terebralia sulcate. The uniform distribution pattern is Ischinocerithium rostratum, Caliostoma jujubinum, and Nerita senegalensis. There are ten mangrove species found and the most common species is Soneratia alba with a total of 27 individuals.Keywords: Gastropods, forest, Mangrove, Tongkeina village ABSTRAKPenelitian ini bertujuan untuk mengetahui Jenis-jenis gastropoda serta persebaran pada hutan mangrove di Kelurahan Tongkeina dan untuk mengetahui Jenis-jenis mangrove di Kelurahan Tongkeina. Penelitian hanya di lakukan satu titik pengambilan sampel dimana dibuat 1 line transek dengan Panjang 100meter yang di tarik tegak lurus dari arah terluar mangrove kemudian dibuat 3 kuadrat dengan ukuran 10x10meter dengan jarak antara kuadrat 5 meter, dan di dalam kuadrat dibuat 15 subkuadrat berukuran 1x1 meter. Berdasarkan penelitian hasil ditemukan ada 6 spesies gastopoda dan dua pola persebaran Gastropoda yaitu mengelompok dan seragam, spesies mengelompok yaitu Littoraria scabra, Angustassiminea castanea, Terebralia sulcate. Pola persebaran seragam yaitu Ischinocerithium rostratum, Caliostoma jujubinum, Nerita senegalensis. Mangrove ditemukan 10 Spesies yang terbanyak adalah Soneratia alba dengan jumlah 27 individu.Kata kunci: Gastropoda, Hutan, Mangrove, Kelurahan Tongkeina.
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Talumingan, Dewanti Y., Ferdinand F. Tilaar, Jety K. Rangan, Maartinus Baroleh, Victor N. R. Watung, and Agung B. Windarto. "Gastropods In Mangrove Forest Of Tongkeina Village, Bunaken Sub-District, City Of Manado." JURNAL PERIKANAN DAN KELAUTAN TROPIS 10, no. 1 (2019): 1. http://dx.doi.org/10.35800/jpkt.10.1.2019.25069.
Full textAbstract:
This research aims to determine the types or species of gastropod and its distribution in mangrove forests in Tongkeina village and to know the species of mangrove in Tongkeina village. The Research was conducted on one sampling point with one 100 meters long line transect which was is laid perpendicular to the outer direction of the mangrove. To collect gastropod samples, three quadrates with a size of 10x10meters with a distance between the quadrate 5 meters were made. In the quadrate, 15 subquadrates sized 1x1meters were also made. Based on the results, there were 6 species of gastropods and two distribution patterns of i.e., Cluster the species of the Littoraria scabra, Angustassiminea castanea, Terebralia sulcate. The uniform distribution pattern is Ischinocerithium rostratum, Caliostoma jujubinum, and Nerita senegalensis. There are ten mangrove species found and the most common species is Soneratia alba with a total of 27 individuals.Keywords: Gastropods, forest, Mangrove, Tongkeina village ABSTRAKPenelitian ini bertujuan untuk mengetahui Jenis-jenis gastropoda serta persebaran pada hutan mangrove di Kelurahan Tongkeina dan untuk mengetahui Jenis-jenis mangrove di Kelurahan Tongkeina. Penelitian hanya di lakukan satu titik pengambilan sampel dimana dibuat 1 line transek dengan Panjang 100meter yang di tarik tegak lurus dari arah terluar mangrove kemudian dibuat 3 kuadrat dengan ukuran 10x10meter dengan jarak antara kuadrat 5 meter, dan di dalam kuadrat dibuat 15 subkuadrat berukuran 1x1 meter. Berdasarkan penelitian hasil ditemukan ada 6 spesies gastopoda dan dua pola persebaran Gastropoda yaitu mengelompok dan seragam, spesies mengelompok yaitu Littoraria scabra, Angustassiminea castanea, Terebralia sulcate. Pola persebaran seragam yaitu Ischinocerithium rostratum, Caliostoma jujubinum, Nerita senegalensis. Mangrove ditemukan 10 Spesies yang terbanyak adalah Soneratia alba dengan jumlah 27 individu.Kata kunci: Gastropoda, Hutan, Mangrove, Kelurahan Tongkeina.
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Bulahari, Alvira Y., Alex D. Kambey, and Anneke V. Lohoo. "Gastropods In Seagrass Beds Of Tongkeina Beach Waters, Manado North Sulawesi." JURNAL PERIKANAN DAN KELAUTAN TROPIS 10, no. 2 (2019): 69. http://dx.doi.org/10.35800/jpkt.10.2.2019.24479.
Full textAbstract:
The Tongkeina coastal waters have relatively extensive tidal areas. In addition to the seagrass community, there are also distinctive coastal communities such as mangroves and coral reefs. Coastal resources in this region are often used by the local community as a food source and have been used as a place of recreation and hotels as well. This is the reason for this study to find out the existence of gastropods on the seagrass beds in the Tongkeina area. It is expected that this study will provide information on the development and existence of the gastropods in coping with the pressure due to the construction of the hotel several years before. The methods of analysis used in this study including identification of gastropods, density, dominance, and diversity. The same research has been conducted several years before, and therefore this information was used as a comparison of the development of gastropods in the area. Thirty-five species (23 genera) were identified, with the highest density recorded was Nassarius gruneri, 0.8667 Individual/m², the dominance of 0.13972, and diversity (H'= 2.6853) which is greater than the results of the previous study 5 years ago (H’=1,9382). These results indicate that these waters are in the process of improving from previous environmental conditions.Keywords : Gastropod, coastal, domination, diversity, Tongkeina. ABSTRAKPerairan pesisir Tongkeina memiliki wilayah pasang surut relatif luas. Selain komunitas Lamun, juga terdapat komunitas khas wilayah pesisir lainnya seperti Mangrove dan Terumbu karang. Sumber daya pesisir di wilayah ini sering digunakan untuk kebutuhan makanan masyarakat, di samping itu telah dimanfaatkan sebagai tempat rekreasi dan Hotel. Hal ini menjadi alasan untuk mengetahui keberadaan Gastropoda di hamparan Lamun di daerah Tongkeina. Diharapkan dapat memberikan informasi perkembangan keberadaan Gastropoda, setelah melewati tekanan akibat dibangunnya hotel sejak beberapa tahun sebelumnya. Metoda analisis yaitu jenis-jenis Gastropoda, kepadatan, dominasi, dan keanekaragaman. Hal yang sama juga telah dilakukan beberapa tahun sebelumnya, sehingga informasi ini dapat dijadikan pembanding perkembangan Gastropoda di daerah tersebut. Diperoleh 35 spesies (23 genera), kepadatan tertinggi adalah Nassarius gruneri, 0.8667 Ind/m², dominasi sebesar 0.13972, dan keanekaragamannya (H’= 2.6853) lebih besar dari hasil penelitian 5 tahun sebelumnya yaitu . 1,9382. Hasil ini menunjukkan bahwa perairan tersebut berada dalam proses perbaikan kondisi lingkungannya.Kata Kunci : Gastropoda, pesisir, dominasi, keanekaragaman, Tongkeina.
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Tongkeles, Sheyrel, Fransine B. Manginsela, Jety K. Rangan, and Alex D. Kambey. "Gastropod Density and Diversity in the Intertidal Zone of Malalayang Beach, Manado." JURNAL PERIKANAN DAN KELAUTAN TROPIS 10, no. 3 (2020): 121. http://dx.doi.org/10.35800/jpkt.10.3.2019.27533.
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This study held in Malalayang Beach Manado, aims to determine the density and diversity of Gastropods on the Malalayang coast of Manado. So the research objective is to find out the density and diversity of Gastropods in Malalayang Beach, Manado. The study using the line transect technique with 50 cm x 50 cm sized. The transect line is placed perpendicular to the coastline. The distance between the line transects is 20 meters. On each transect line 5 squares are placed. The distance between squares is determined using random numbers. Gastropod species found in Malalayang Beach Manado consist of 31 species and 17 genus, each consisting of the Archaeogastropoda that consists of 3 species, Mesogastropoda consists of 9 species, and the Order of the Neogastropoda of 19 species. The total density of Gastropods in Malalayang Beach in Manado is 6.27 individuals / m2 with diversity of 3.07, according to the criteria for diversity index of Malalayang coast having high diversity. Based on this, it is suggested that Manado Malalayang Beach can be maintained and carried out management that considers the feasibility of the environment as one of the requirements for sustainable development.Keywords: Gastropods, Density, Species DiversityABSTRAK Penelitian ini dilakukan di Pantai Malalayang Manado,berkaitan dengan permasalahan yang dikemukakan bagaimanakah kepadatan dan keanekaragaman Gastropoda di pantai Malalayang Manado. Maka tujuan penelitian adalah Mengetahui kepadatan dan keanekaragaman Gastropoda di Pantai Malalayang Manado. Pengumpulan data dengan pendekatan Teknik line transect menggunakan kuadrat berukuran 50cm x 50cm. Line transect diletakkan tegak lurus dengan garis pantai. Jarak antara line transect sebesar 20 meter. Pada masing- masing line transect diletakkan 5 kuadrat. Jarak antar kuadrat ditentukan dengan menggunakan angka acak. Spesies Gastropoda yang ditemukan di Pantai Malalayang Manado terdiri dari 31 spesies dan 17 genera yang masing-masing terdiri dari Ordo Archaeogastropoda 3 spesies, Ordo Mesogastropoda 9 spesies, dan Ordo Neogastropoda 19 spesies. Kepadatan total Gastropoda di Pantai Malalayang Manado 6.27 individu/m2 dengan keanekaragaman 3,07, Menurut kriteria indeks keanekaragaman pantai Malalayang memiliki keanekaragaman yang tinggi. Berdasarkan hal tersebut, maka disarankan agar Pantai Malalayang Manado dapat dijaga dan dilakukan pengelolaan yang mempertimbangkan sskelayakan lingkungan sebagai salah satu syarat pembangunan berkelanjutan.Kata kunci: Gastropoda, Kepadatan, Keanekaragaman Jenis
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Prasetia, Muhammad Nur, Supriharyono Supriharyono, and Frida Purwanti. "HUBUNGAN KANDUNGAN BAHAN ORGANIK DENGAN KELIMPAHAN DAN KEANEKARAGAMAN GASTROPODA PADA KAWASAN WISATA MANGROVE DESA BEDONO DEMAK Relation of Organic Matters to the Abundance and Diversity of Gastropods in the Mangrove Tourism Areas of Bedono, Demak." Management of Aquatic Resources Journal (MAQUARES) 8, no. 2 (2019): 87–92. http://dx.doi.org/10.14710/marj.v8i2.24231.
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ABSTRAK Wilayah pesisir Bedono sebagai kawasan hutan bakau yang terletak di utara Kabupaten Demak telah dikelola dan dijadikan kawasan wisata sehingga secara tidak langsung akan berdampak terhadap fungsi ekologis mangrove. Banyak organisme hidup yang berasosiasi dengan mangrove salah satunya adalah Gastropoda. Tujuan dari penelitian ini adalah mengetahui jenis Gastropoda, kelimpahan dan keanekaragaman Gastropoda serta mengetahui hubungan antara kandungan bahan organik dengan kelimpahan Gastropoda. Pengambilan sampel Gastropoda dan sedimen dengan metode kuadran transek yaitu 1 x 1m di 3 stasiun. Hasil penelitian didapatkan terdiri dari 5 genera Gastropoda yaitu Cassidula sp, Cerithidae sp, Littorina sp, Telescopium sp, dan Terebralia sp. Kelimpahan Gastropoda berkisar antara 94 – 248 ind/3m2. Nilai indeks keanekaragaman sebesar 1,08 - 1,27. Nilai indeks keseragaman sebesar 0,67 – 0,94 dan indeks dominasi sebesar 0,23 – 0,39. Berdasarkan nilai uji regresi sederhana dimana nilai koefisien korelasi berkisar 0,7 < r ≤ 1,0 menunjukkan bahwa kelimpahan gastropoda memiliki hubungan yang kuat dan memiliki korelasi dengan kandungan bahan organik dalam sedimen. ABSTRACT Bedono coastal as an area mangrove forest located at the northen Demak Regency has been managed and used as a tourism area. Many living organisms associated to mangrove, mainly Gastropods. Purpose the research a to investigate type of Gastropods, abundance and diversity of Gastropods and relationship of organic matters to Gastropods abundance. Samples of Gastropods and sediments were collected using 1x1m transect quadrant methods in 3 different stations. Results of research obtained 5 genera of Gastropods that is Cassidula sp, Cerithidae sp, Littorina sp, Telescopium sp, dan Terebralia sp. Abundance of Gastropods between 94 – 248 ind/3m2. Result of diversity index was 1,08 – 1,27. Uniformity index between 0,67 – 0,94 and domination index was 0,23 – 0,39. Based on simple regression test the value of a correlation range 0,7 < r ≤ 1,0. It was showed that gastropods abundance have a close relationship and a correlation with organic matters in sediments.
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Roring, Richardo O., Jety K. Rangan, Alex D. Kambey, Rene Ch Kepel, Stephanus V. Mandagi, and Calvyn F. A. Sondak. "Community Structure of Gastropod in Seagrass Beds of Waleo Beach Waters, North Minahasa Regency." Jurnal Ilmiah PLATAX 8, no. 1 (2020): 102. http://dx.doi.org/10.35800/jip.8.1.2020.28268.
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This study aims to determine the type of Gastropod and the community structure including Species Density, Relative Density, Diversity (H’), and Dominance (C). Based on observation, there is 124 individuals included in 11 species (7 genera) from 7 families (3 orders) obtained. The highest density value is 5,87 Ind/m2 by Euplica borealis, and has 35,48% of relative density. For the diversity, an index is H’ = 1,62 obtained, which is classified as low. This shows that seagrass beds in Waleo beach waters, North Minahasa Regency, there are several species obtained with abundant numbers of individuals compared to the other species, so the diversity index obtained relatively low. As for the range of dominance index is C = 0,36 to 0,44. The lowest value is in the transect number 1 while the highest in the transect number 2. This value shows that seagrass beds in Waleo beach waters, North Minahasa Regency there are no specific species that dominate in the community. Waleo beach waters, North Minahasa Regency has a temperature of about 29,3 °C illustrating the condition of the water temperature is relatively good for Gastropods' life. The salinity is 30 ‰ obtained, which is relatively good for Gastropod growth. pH obtained about 7 which is still relatively good for gastropods life.Keywords: Gastropod, Community Structure, Waleo.AbstrakPenelitian ini bertujuan untuk menginventarisasi jenis-jenis Gastropoda serta mengetahui struktur komunitas termasuk: Kepadatan Spesies, Kepadatan Relatif, Keanekaragaman (H’), dan Dominansi (C). Berdasarkan hasil pengamatan diperoleh 124 individu yang termasuk dalam 11 spesies (7 genera) dari 7 famili (3 ordo). Nilai kepadatan tertinggi sebesar 5,87 Ind/m2 oleh spesies Euplica borealis, dan memiliki kepadatan relatif sebesar 35,48 %. Untuk indeks keanekaragaman diperoleh sebesar H’ = 1,62 yang tergolong rendah. Hal ini menunjukan bahwa daerah padang lamun perairan pantai Waleo, Kabupaten Minahasa Utara terdapat beberapa spesies yang diperoleh dengan jumlah individu yang melimpah dibandingkan jenis lainnya, sehingga indeks keanekaragaman yang diperoleh tergolong relatif rendah. Adapun untuk kisaran indeks dominansi yang diperoleh yaitu sebesar C = 0,36 sampai dengan 0,44. Nilai terrendah terdapat pada transek 1 sedangkan nilai tertinggi terdapat pada transek 2. Nilai tersebut menunjukan bahwa di padang lamun perairan Pantai Waleo, Kabupaten Minahasa Utara tidak terdapat jenis atau spesies tertentu yang mendominasi dalam komunitas tersebut. Wilayah perairan pantai Waleo, Kabupaten Minahasa Utara memiliki suhu 29,3 °C, menggambarkan bahwa kondisi suhu perairan tergolong baik untuk kehidupan Gastropoda. Salintas yang diperoleh sebesar 30 0/00, yang masih dalam kisaran baik untuk pertumbuhan Gastropoda. Derajat keasaman (pH) yang diperoleh yaitu 7 yang masih tergolong baik untuk kehidupan Gastropoda.Kata Kunci : Gastropoda, Struktur Komunitas, Waleo.
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PONNUSAMI, JAYASRI, and FAZIMAH AZIZ. "Checklist of Molluscs (Gastropoda and Bivalvia) of Malaysia Exclusive Economic Zone (EEZ) in Sarawak Waters." Borneo Journal of Resource Science and Technology 7, no. 2 (2017): 111–17. http://dx.doi.org/10.33736/bjrst.597.2017.
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Most of the molluscs studies in Malaysia have focused only on their diversity and the knowledge on their relationship with the water depth are lacking. The hypothesis tested in this research was water depth influence the density of marine gastropods and bivalves of Malaysia Exclusive Economic Zone (EEZ) in Sarawak waters. The aim of the study was to determine the gastropod and bivalve species in Malaysia EEZ of Sarawak waters and the relationship of the species density with water depth. The sampling was conducted from 15th August 2015 until 9th October 2015. The gastropods and bivalves were collected from 32 stations of various depths using the Smith-McIntyre grab. The depth of the stations was from 20 m to 200 m. A total of 95 taxa (61 Gastropoda and 34 Bivalvia) were found in this study. The dominant molluscs species of Sarawak waters in Malaysia EEZ were Limopsis sp., Turitella cingulifera, Pitar citrinus, and Cavolinia globulosa. Species density was about 10 ind./m2 to 610 ind./m2 and the total density was between 250 ind./m2 (Station 22) and 1,940 ind./m2 (Station 2). The total density of gastropods and bivalves showed weak correlation and negative relationship with the depth of water. The findings of this study will aid future studies in Malaysia EEZ. 
 Keywords: Bivalves, gastropods, Malaysia EEZ, Sarawak waters 
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PONNUSAMI, JAYASRI, and FAZIMAH AZIZ. "Supplementary Materials: Checklist of Molluscs (Gastropoda and Bivalvia) of Malaysia Exclusive Economic Zone (EEZ) in Sarawak Waters." Borneo Journal of Resource Science and Technology 7, no. 2 (2017): 111–17. http://dx.doi.org/10.33736/bjrst.598.2017.
Full textAbstract:
Most of the molluscs studies in Malaysia have focused only on their diversity and the knowledge on their relationship with the water depth are lacking. The hypothesis tested in this research was water depth influence the density of marine gastropods and bivalves of Malaysia Exclusive Economic Zone (EEZ) in Sarawak waters. The aim of the study was to determine the gastropod and bivalve species in Malaysia EEZ of Sarawak waters and the relationship of the species density with water depth. The sampling was conducted from 15th August 2015 until 9th October 2015. The gastropods and bivalves were collected from 32 stations of various depths using the Smith-McIntyre grab. The depth of the stations was from 20 m to 200 m. A total of 95 taxa (61 Gastropoda and 34 Bivalvia) were found in this study. The dominant molluscs species of Sarawak waters in Malaysia EEZ were Limopsis sp., Turitella cingulifera, Pitar citrinus, and Cavolinia globulosa. Species density was about 10 ind./m2 to 610 ind./m2 and the total density was between 250 ind./m2 (Station 22) and 1,940 ind./m2 (Station 2). The total density of gastropods and bivalves showed weak correlation and negative relationship with the depth of water. The findings of this study will aid future studies in Malaysia EEZ. 
 Keywords: Bivalves, gastropods, Malaysia EEZ, Sarawak waters 
 
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Nadaa, Meutia Shibaa, Nur Taufiq-Spj, and Sri Redjeki. "Kondisi Makrozoobentos (Gastropoda dan Bivalvia) Pada Ekosistem Mangrove, Pulau Pari, Kepulauan Seribu, Jakarta." Buletin Oseanografi Marina 10, no. 1 (2021): 33–41. http://dx.doi.org/10.14710/buloma.v10i1.26095.
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Makrozoobentos merupakan indikator biologi perairan, disamping sebagai organisme sesil mereka juga mempunyai daur hidup yang relatif lama. Klass Gastropoda dan Bivalvia secara umum mempunyai kelimpahan dan keanekaragaman yang tinggi, dan senantiasa merespon kondisi kualitas air di tempat hidupnya. Penelitian ini bertujuan menganalisis struktur komunitas makrozoobenthos dan hubungannya dengan ekosistem mangrove di Pulau Pari. Purposive random sampling digunakan pada pengambilan sample dengan melihat kerapatan dan jenis vegetasi mangrove. Square plot 10 x 10 and 5 x 5 m digunakan untuk menghitung kelimpahan mangrove dan makrozoobentos (gastropoda dan bivalvia), sementara identifikasi moluska dilakukan di Lab LIPI Cibinong. Hasil menunjukkan kelimpahan mangrove dari keempat stasiun berkisar 1,200–2,700 pohon/Ha, sementara kelimpahan molusca antara 5.500-55.600 ind/Ha, dengan komposisi makrozoobentos terdapat 10 spesies gastropoda dan 1 spesies bivalvia. Keanekaragaman kedua klass termasuk pada kategori sedang (1,20-2,67), dengan keseragaman sedang (0,59-0,84) dan indeks dominansi antara 0,20-0,47. Analisis regresi hubungan kelimpahan mangrove dan makrozoobentos menunjukkan nilai 0,6498. Hal ini dapat disimpulkan bahwa pada kawasan mangrove P. Pari tidak ada jenis gastropoda ataupun bivalvia yang mendominasi, namun hubungan keduanya mengikuti kerapatan mangrove yang ada dengan nilai korelasi keduanya sebesar 0,8061.Jenis yang lebih beragam dan kelimpahan jenisnya lebih dipengaruhi oleh kerapatan mangrove sebagai tempat hidupnya. Macrozoobethos as a biological indicators aside as a sessile organisms, its also have relatively long life cycle. Gastropod and bivalvia class, are commonly have a high abundance and diversity, its always responds to the water quality conditions in their habitat. The aim of study is to analized macrozoobenthic community structure and their relationship to mangrove ecosystem at Pari Island. Purposive random sampling was used for sampling the organisms by comparing to the density and species of mangrove vegetation. Square plots of 10 x 10 and 5 x 5 m were used to calculate macrozoobenthos abundance (gastropods and bivalvia) meanwhile the identification of Gastropods and Bivalvia is in LIPI laboratory at Cibinong. The results shows that mangrove density is in between 1,200 to 2,700 inds/Ha, while composition of macrozoobenthos at Pari Island have 10 species of gastropods and one species of bivalvia. The diversity of the two classes is included into the medium category (1.20-2.67), with moderate uniformity (0.59-0.84) and the dominance index is between 0.20-0.47. The regression analysis of the relationship between mangrove and macrozoobenthic abundance is about 0.6498. It can be concluded that in the Pari Island’s mangrove area, there are no gastropods or bivalves that much dominate, but the relationship between of Gastropoda and Bivalvia is following the mangrove density with a correlation about 0.8061. More diverse types and abundance of species are affected by the density of mangroves as a place for its live.
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Sinapoy, Jumardin, Jamili Jamili, and Analuddin Analuddin. "Bioakumulasi Logam Nikel dan Pola Ordinasi Pada Gastropoda di Kawasan Mangrove Sekitar Areal Bekas Lahan Pertambangan Kabupaten Konawe Utara Sulawesi Tenggara." BioWallacea : Jurnal Penelitian Biologi (Journal of Biological Research) 7, no. 1 (2020): 1078. http://dx.doi.org/10.33772/biowallacea.v7i1.11813.
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This study aims to determine the bioaccumulation of nickel metal and the spatial distribution pattern of gastropods in the area of the former nickel mining area in Tokowuta Village, Lasolo District, North Konawe Regency, Southeast Sulawesi. The method used is a combination of the path method and sample plot. The parameters observed in this study include nickel bioaccumulation in gastropods, density, frequency, diversity index, uniformity index, dominance index, dispersal pattern, and PCA ordinance pattern. The results showed that there were seven species in this region where the highest nickel bioaccumulation was found in the type of Nerita lineata (0.068 ppm) and the lowest in Terebralia sulcata (0.017 ppm). The highest density and frequency were found in Terebralia sulcata (54.66% and 25.53%) and the lowest in Telescopium telescopium (1.93% and 4.26%). In this region has a low diversity index (1.36), a uniformity index that is an unstable community (0.70), a low index of dominance (0.35), cluster pattern distribution (1.19). The results of the PCA ordinance pattern study showed the spatial distribution of gastropod dissimilarity factors in each observation plot formed three clusters. Cluster 1 consists of plots 2 and 6. Cluster 2 consists of plots 3, 5, and 10. Cluster 3 consists of plots 1, 4, 7, 8, 9, 11, and 12. The spatial distribution of gastropod habitat factors in each observation plot forms three clusters with different characteristics. Cluster 1 is characterized by soil nickel content. Cluster 2 by salinity. Cluster 3 with pH and water temperature. The spatial distribution of gastropod types based on habitat characteristics can form four clusters. Cluster 1 consists of Littorariascabra. Cluster 2 consists of Terebraliasulcata species. Cluster 3 with Telescopium telescopium and Littoraria melanostoma species. Cluster 4 with Cerithidea cingulata, Cerithidea quadrata, and Nerita lineata species. Keywords: Nickel Metal, Gastropoda, Ordination PatternABSTRAKPenelitian ini bertujuan untuk mengetahui mengetahui bioakumulasi logam nikel dan pola distribusi spasial gastropoda di kawasanareal bekas lahan tambang nikel di Desa Tokowuta Kecamatan Lasolo Kabupaten Konawe Utara Sulawesi Tenggara. Metode yang digunakan adalah kombinasi antara metode jalur dan petak contoh. Parameter yang diamati pada penelitian ini meliputi bioakumulasi nikel pada gastropoda, kepadatan, frekuensi, indeks keanekaragaman, indeks keseragaman, indeks dominansi, pola penyebaran dan pola ordinansi PCA. Hasil penelitian menunjukkan terdapat tujuh spesies pada kawasan ini dimana bioakumulasi nikel tertinggi terdapat pada jenis Nerita lineata (0,068 ppm) dan terendah padaTerebralia sulcata (0,017 ppm). Kepadatan dan frekuensi tertinggi terdapat pada jenis Terebralia sulcata (54,66% dan 25,53%) dan terendah padaTelescopium telescopium (1,93% dan 4,26%).Pada Kawasan ini memiliki indeks keanekaragaman yang rendah (1,36), indeks keseragaman yang Komunitas Labil(0,70), indeks dominansi yang rendah (0,35), pola penyebaranmengelompok (1,19). Hasil penelitian pola ordinansi PCA menunjukkan sebaran spasial faktor disimilaritas gastropoda pada setiap plot pengamatan membentuk tiga cluster.Cluster 1 terdiri dari plot 2 dan 6. Cluster 2 terdiri dari plot 3, 5 dan 10. Cluster 3 terdiri dari plot 1, 4, 7, 8, 9, 11 dan 12. Sebaran spasial faktor habitat gastropoda pada setiap plot pengamatan membentuk tiga cluster dengan karakteristik yang berbeda. Cluster 1 dicirikan kadar nikel tanah. Cluster 2 oleh salinitas. Cluster 3 dengan pH dan suhu perairan. Sebaran spasial jenis gastropoda berdasarkan karakteristik habitat dapat membentuk empat cluster. Cluster 1 terdiri dari Littoraria scabra. Cluster 2 terdiri dari Terebralia sulcata. Cluster 3 dengan jenis Telescopium telescopium dan Littoraria melanostoma. Cluster 4 dengan jenis Cerithidea cingulata, Cerithidea quadrata dan Nerita lineata
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Noor, Sri Yuningsih, Inneke F. M. Rumengan, and Markus T. Lasut. "Estimation of effects of tributyltin (TBT) bioaccumulation using the imposex character in marine gastropods (Thais tuberosa and Monodonta labio)." AQUATIC SCIENCE & MANAGEMENT 1, no. 1 (2013): 57. http://dx.doi.org/10.35800/jasm.1.1.2013.1970.
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The effects of tributyltin (TBT) have been estimated using imposex characters in two species of marine gastropods, Thais tuberosa and Monodonta labio, at 3 different locations along the Minahasa Peninsula, northern part of Sulawesi Island: Manado Bay Waters, Bitung Coastal Waters, and Tateli Coastal Waters as a control area. The estimation was done by comparing the percentage of female imposex (I) at different body size (small: shell length ≤ 25 mm; large: shell length >25 mm), and measuring the concentration of TBT in sediments and soft part of the gastropod samples. The highest I value was found in small sized T. tuberosa from Manado Bay Waters (63%) and large sized T. tuberosa from Bitung Coastal Waters (60%). Small and large sized M. labio had their highest I value, 30% and 44% respectively, in the samples from Manado Bay Water and Bitung Coastal Waters. The occurence of imposex in both speciesis correlated with the high concentration of TBT in sediments and soft part of the marine gastropod samples© Kajian tentang pendugaan pengaruh bioakumulasi logam berat tributyltin (TBT) menggunakan karakter imposeks pada gastropoda laut (Thais tuberosa dan Monodonta labio) telah dilakukan. Sampel diambil dari 3 lokasi di perairan sepanjang Semenanjung Minahasa, Pulau Sulawesi bagian Utara, yaitu Perairan Teluk Manado (PTM), Perairan Bitung (PBT), dan Perairan Pantai Tateli (PPT) sebagai lokasi kontrol. Pendugaan dilakukan dengan cara membandingkan persentase individu imposeks (I) sampel ukuran kecil (K; panjang cangkang ≤ 25 mm) dan ukuran besar (B; panjang cangkang >25 mm), dan pengukuran konsentrasi TBT pada sedimen dan bagian lunak sampel gastropoda laut. Nilai I tertinggi adalah pada T. tuberosa ukuran K asal PTM, sebesar 63%, dan ukuran B asal PBT, sebesar 60%.Untuk M. labio baik ukuran K maupun B, nilai I tertinggi adalah pada sampel asal PTM dan PBT, masing-masing sebesar 30% dan 44%. Kejadian imposeks pada kedua jenis sampel ini didukung dengan konsentrasi TBT pada sedimen dan jaringan gastropoda laut yang tinggi©
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Jahid, Ajmal, and Harinder Rai Singh. "The Abundance and Distribution of Mangrove Gastropods from Kuala Selangor Nature Park, Selangor." Science Letters 15, no. 2 (2021): 1–12. http://dx.doi.org/10.24191/sl.v15i2.13808.
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This study reports on the abundance and distribution of mangrove gastropods from Kuala Selangor Nature Park, Malaysia (KSNP). The line transect method with quadrats (5m x 5m) was employed to sample the gastropods. Gastropods were collected from the leaves, branches, stems and roots of trees and the mangrove floor. Nineteen gastropod taxa from seven families were recorded from the Bruguiera, mixed (Bruguiera, Avicennia and Rhizophora), Avicennia and Rhizophora zones. Avicennia sp. recorded the largest Girth at Breast Height (GBH) (mean±sd=37.3±18.2 cm) while Bruguiera sp. recorded the smallest GBH (mean=22.36±8 cm). The overall density of the gastropods at KSNP was 0.85 no/m2. The gastropod density was higher at the Avicennia & Rhizophora zone (150-200m (closer to the mudflats) (0.064±0.084 no/m2) followed by the mixed zone (50-150m) (0.046±0.30 no/m2) and lowest at the Bruguiera zone (0-50m) (0.08±0.080 no/m2) (closer to the coastal bund). Gastropod density between sampling zones did not vary significantly (p>0.05) but generally increased from the bund towards the mudflat edge. Further studies of the role of gastropods in the coastal food chain, as bio-indicators of habitat change and as potential food source for local populace are needed.
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Tolhurst, Bryony A., Andrew D. J. Overall, Peter J. King, Eric R. Morgan, and Rowenna J. Baker. "Co-Occurrence of Domestic Dogs and Gastropod Molluscs in Public Dog-Walking Spaces and Implications for Infection with Angiostrongylus vasorum: A Preliminary Study." Animals 11, no. 9 (2021): 2577. http://dx.doi.org/10.3390/ani11092577.
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Angiostrongylusvasorum is a helminth parasite of domestic dogs that is increasing in range and prevalence. Its lifecycle requires terrestrial gastropod mollusc (“gastropod”) intermediate hosts, but research is lacking regarding contact risk in situ. We studied co-occurrence between dogs and gastropods in dog-walking spaces in an A. vasorum hotspot in southern England, United Kingdom, with the aim of quantifying environmental and spatio-temporal overlap. We surveyed 390 quadrats and 180 point-counts along 3 km transects at seven sites, yielding 1672 gastropod and 763 dog observations. Common gastropods comprised Arion, Cornu, Monacha, Deroceras, Tandonia, Cochlicella, and Trochulus species. Habitat was the most important factor structuring both gastropod and dog presence and abundance. Likelihood ratio comparisons from conditional probability trees revealed that dogs were 15× more likely to be present on hardstanding surfaces than other habitats but were also present on natural and amenity grassland. Presence of gastropod species associated with high A. vasorum prevalence was 65.12× more likely in woodland/scrub and 62.17× more likely in amenity grassland than other habitats. For gastropods overall, high abundance was 5.82× more likely in woodland/scrub and natural grassland. The findings suggest co-occurrence is highest in amenity and natural grassland, but infection risk is greatest in amenity grassland and woodland/scrub.
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Lauridsen, Bodil W., and Kai Ingemann Schnetler. "A catalogue of Danian gastropods from the Baunekule facies, Faxe Formation, Denmark." Geological Survey of Denmark and Greenland (GEUS) Bulletin 32 (April 1, 2015): 1–117. http://dx.doi.org/10.34194/geusb.v32.4593.
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This catalogue of 194 gastropod taxa is based on the collection of Danian gastropods from the Baunekule facies, Faxe Formation in eastern Denmark. The gastropod fauna is extremely rich and well preserved. Most of the gastropods (106 species) are referred to genus level only, 9 morphotypes to even higher taxonomical levels and 79 gastropods are referred to species level. The gastropods are classified following Bouchet & Rocroi (2005) as 4 different clades: Vetigastropoda (represented by 26 species and 10 superfamilies), Caenogastropoda (represented by 142 species and 17 superfamilies), Heterobranchia (represented by 23 species and 5 superfamilies) and Opisthobranchia (represented by 1 species and 1 superfamily). The new species Zaclys? nuetzeli n. sp. is introduced.
 The Faxe Formation is recognised as a cold-water coral ecosystem with interfingering smaller bryozoan mounds. The Baunekule facies is found in the upper part of the coral mound complex of the Faxe Formation, where it forms isolated lensoidal bodies in the flanks of some of the coral mounds. It is characterised by a high diversity invertebrate fauna that occurs in weakly consolidated coraldominated floatstone to rudstone. The diagenesis of the Baunekule facies is of special significance because a high proportion of the originally aragonite-shelled fauna is preserved by recrystallization to calcite during early burial diagenesis. Most of the gastropods are not known from other parts of the Faxe Fm. The fauna is very important for comparative evolutionary studies of fossil and modern gastropods on cold-water coral mounds. Many of the genera have not previously been recorded from Danian strata. None of the gastropod species found in the Baunekule facies are known for certain to range below the Cretaceous–Palaeogene boundary. The fauna is comparable to gastropods found on modern cold-water coral mounds in the North Atlantic.
 The gastropod fauna from the Baunekule facies is characterised by a very high diversity of rather small millimetre-sized gastropods with a preference for hard substrates; 63.9% of the taxa belong to the browsing carnivore trophic group, feeding mainly on sedentary animals. Surprisingly, the fauna contains some common occurrences of typically warm-water species. The fauna consists mostly of Cenozoic genera and up to 87% of the species may be endemic to the cold-water coral ecosystem of the Faxe Formation. The diverse and rather unusual gastropod fauna from the Baunekule facies is undoubtedly linked to the evolution of cold-water coral ecosystems.
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Nakamoto, Kenta, Jun Hayakawa, Tomohiko Kawamura, et al. "Seasonal fluctuation in food sources of herbivorous gastropods in a subtropical seagrass bed estimated by stable isotope analysis." Journal of the Marine Biological Association of the United Kingdom 99, no. 5 (2018): 1119–25. http://dx.doi.org/10.1017/s0025315418001108.
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AbstractVarious herbivorous invertebrates in seagrass beds are considered to be generalists in food use and their diets may temporally fluctuate according to the availability of food sources. We assessed whether food sources of herbivorous gastropods vary in a subtropical seagrass bed in Nagura Bay, Ishigaki Island, where coexisting seaweeds grow densely in spring but minimally in summer. Abundant gastropods and their possible food sources were collected in spring and summer of 2013 and 2015, and their stable carbon and nitrogen isotope ratios were measured. Between the two seasons, each possible food source had similar isotopic values, but all the herbivorous gastropod species in summer were more enriched in 13C than the gastropod samples in spring. The mixing models in SIAR (Stable Isotope Analysis in R) showed that the total contribution rates of seaweeds, i.e. rhodophytes, phaeophytes and chlorophytes, for all herbivorous gastropod species decreased from spring to summer; in contrast, the contribution rate of seagrasses increased. Linear Mixed Models showed that the seasonal variation in δ13C of the herbivorous gastropods was larger than that of the possible food sources, adding further evidence to the seasonal change in food sources of the herbivorous gastropods. This seasonal change in food use appears to correspond to the change in seaweed biomass, suggesting that herbivorous gastropods flexibly change their diets depending on food availability.
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Chen, Chong, Hiromi Kayama Watanabe, and Yasuhiko Ohara. "A very deep Provanna (Gastropoda: Abyssochrysoidea) discovered from the Shinkai Seep Field, Southern Mariana Forearc." Journal of the Marine Biological Association of the United Kingdom 98, no. 3 (2016): 439–47. http://dx.doi.org/10.1017/s0025315416001648.
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The ‘Shinkai Seep Field’ is a serpentinite-hosted chemosynthetic ecosystem in the Southern Mariana Forearc. In June 2015 the site was revisited and a number of rissoiform gastropods were collected. Taxonomic investigations revealed that these specimens represent a hitherto undescribed species of Provanna (Gastropoda: Abyssochrysoidea), described herein as Provanna cingulata n. sp. This new species is characterized by numerous spiral keels, lack of significant axial sculpture, rounded and inflated whorls, and large size for the genus. With the shell height exceeding 16.5 mm (may reach 20 mm), it is the largest Provanna species known thus far. Phylogenetic analysis using 411 bp of the cytochrome oxidase c subunit I (COI) gene confirmed its systematic placement within the genus Provanna. This is the only gastropod from a family endemic to chemosynthetic ecosystems thus far known from the ‘Shinkai Seep Field’. Furthermore, with a collection depth of 5687 m, it represents the deepest known bathymetric range for the superfamily Abyssochrysoidea as a whole.
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Longo, Pedro Augusto Dos Santos, Karine Ferreira Ribeiro Mansur, Fosca Pedini Pereira Leite, and Flávio Dias Passos. "The highly diverse gastropod assemblages associated with Sargassum spp. (Phaeophyceae: Fucales) habitats." Journal of the Marine Biological Association of the United Kingdom 99, no. 06 (2019): 1295–307. http://dx.doi.org/10.1017/s0025315419000304.
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AbstractMacrophytes provide a habitat for many species of marine invertebrates, the gastropods being one of the main components. This study provides new information about Sargassum-associated gastropod biodiversity, through characterization of the fauna from a highly impacted area of Brazil, investigating its variation at a small spatial scale and between two main seasons of the year, as well as its relationship with macroalgae parameters. Density of gastropods was higher during the warmest season and varied throughout sampling sites. A significant and positive, however weak, relationship between gastropod density and Sargassum dry weight was found in all localities. For all sites, a marked and unusual dominance of Bittiolum varium was observed. The high dominance of this species seems to be related to the impacts caused by shipping activities and highway construction in the 1970s and 1980s, which caused a decline in local species diversity that seems to have continued until now. Many species, both typical of these habitats and characteristic of other, nearby habitats, benefit from Sargassum sp. These macrophytes allow gastropods to establish and grow during their most vulnerable stages, as shown by the growth series and juvenile forms found for most species of gastropods. The present data highlight the importance of macrophyte habitats for gastropod biodiversity in coastal areas and call attention to the importance of raising knowledge on this fauna, especially in impacted areas, thus contributing to the conservation of these highly diverse and ecologically important macrophyte–gastropod systems.
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Hermanses, Evelina, Jety K. Rangan, and Alex D. Kambey. "Gastropod Community In The Intertidal Of Likupang Coast, Kampung Ambon, East Likupang District, North Minahasa Regency." JURNAL ILMIAH PLATAX 6, no. 2 (2018): 58. http://dx.doi.org/10.35800/jip.6.2.2018.20623.
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This study was aimed at finding Gastropod species and studying the community structure in the coastal area of Kampung Ambon, Likupang, through species density, diversity, evenness and dominance analyses. It was carried out in August 2017. The study employed transect method with quadrats by placing the on the area covered with coral-sand mix substrates. Density analysis found total numbers of 168 individuals with mean density of 7 ind/m². Spesies of the highest indiviual numbers was Cypraea annulus with a total of 98 individuals. Species diversity (H’) was 0.632773. This value reflects that the species diversity is moderate. Species richness index was R ˃ 4 reflecting that there is high species richness. Species evenness index was ˃ 0,5 meaning that the gastropods in the area are sufficiently even. Dominance index ranged from 0.27 to 0.47 indicating no species dominance in the study site.Key Words : Gastropod, density, diversity, evenness, dominance ABSTRAKTujuan dari penelitian ini adalah mempelajari jenis-jenis gastropoda apa saja yang ditemukan dan mempelajari struktur komunitas melalui analisis kepadatan, keanekaragaman, kekayaan, kemerataan, dan dominasi spesies di daerah intertidal perairan Kampung Ambong Likupang. Penelitian dilaksanakan pada bulan Agustus 2017. menempatkan pada satu macam habitat yaitu kawasan yang didominasi oleh substrat karang yang bercampur pasir. Hasil analisis kepadatan menunjukkan bahwa di ketiga transek pengamatan jumlah individu yang diperoleh berjumlah 168 individu dengan kepadatan rata-rata per kuadrat 7 ind/m². Spesies dengan individu yang terbanyak adalah Cypraea annulus dengan jumlah individu sebanyak 98 individu. Keanekaragaman spesies yang diperoleh yaitu H’ = 0.632773. Nilai ini tergolong pada tingkat keanekaragaman sedang. Indeks kekayaan diperoleh nilai R ˃ 4, kriteria ini tergolong pada indeks kekayaan yang tinggi. Indeks kemerataan spesies diperoleh nilai ˃ 0,5 yang berarti spesies yang ada cukup merata, dan indeks dominasi diperoleh pada kisaran 0,27 – 0,47 yang menunjukkan tidak ada dominansi spesies di lokasi penelitian.Kata Kunci : Gastropoda, kepadatan, keanekaragaman, kekayaan, dominasi
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Lobo-da-Cunha, Alexandre, Diogo Amaral-de-Carvalho, Gonçalo Calado, and Vítor Costa. "Oxidation of cinnamyl alcohol and ethanol by oxidases and dehydrogenases in the digestive gland of gastropods." Journal of Molluscan Studies 85, no. 4 (2019): 398–403. http://dx.doi.org/10.1093/mollus/eyz025.
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Abstract Alcohol oxidases and dehydrogenases are poorly studied in the Mollusca, the second largest phylum of metazoans. In order to obtain an overview of the distribution of aromatic alcohols and ethanol-oxidizing enzymes in the gastropod phylogenetic tree, we investigated the activity of these enzymes in the digestive gland of 26 gastropod species in the clades Patellogastropoda, Neritimorpha, Vetigastropoda, Caenogastropoda and Heterobranchia. Marine, freshwater and terrestrial species, as well as herbivores and carnivores, were sampled so that gastropods varying widely in habitat and diet were included in the study. An aromatic alcohol oxidase, which was previously reported in herbivorous terrestrial gastropods, was detected in 25 of the studied species. The activity of a cinnamyl alcohol dehydrogenase was detected for the first time in gastropods and this enzyme was found to be present in all the species that were studied. Our study, thus, demonstrates that alcohol oxidases and dehydrogenases are ubiquitous enzymes among gastropods; these enzymes are found across the gastropod phylogenetic tree and across species varying widely in habitat and diet. The enzymes that catalyze the oxidation or dehydrogenation of cinnamyl alcohol must be involved in the metabolism of aromatic alcohols of very different dietary origins and conceivably have a detoxification function. Oxidase or dehydrogenase activities involving ethanol as a substrate were detected only in a few species, mostly those belonging to the Panpulmonata. This suggests that for many gastropods ethanol may not be metabolically relevant.
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Nicolai, Annegret, Robert G. Forsyth, Melissa Grantham, and Cary D. Hamel. "Tall grass prairie ecosystem management—a gastropod perspective." Canadian Field-Naturalist 133, no. 4 (2020): 313–24. http://dx.doi.org/10.22621/cfn.v133i4.2217.
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Less than 5% of the original tall grass prairie in North America remains. A portion of this remnant, composed of wetland, grassland and forest, is protected by the Nature Conservancy of Canada (NCC) in southern Manitoba. This heterogeneous ecosystem has rich biodiversity; however, gastropods have not been surveyed in Canada’s tall grass prairie. We studied gastropods in Prairie, Wet Meadow, Forest, and Wet Forest habitats of the Manitoba Tall Grass Prairie Preserve that vary with respect to land management practices (prescribed burning, grazing by cattle). Gastropod community composition was unique in the Prairie where mounds of grass litter form permanently moist cavities harbouring aquatic species, while dry-habitat species colonized the upper parts of these mounds. Gastropod communities in Prairie habitats were negatively affected by grazing and burning that occurred in the five years prior to our survey. Unburned Forest patches included both forest gastropod species and edge effect influenced open-habitat species and harboured the most diverse gastropod communities. These unburned Forest patches potentially provide a species pool for post-burn prairie recolonization. The gastropod community of Wet Meadows was not affected by grazing and was composed mainly of aquatic species. In this gastropod survey five species were recorded from Manitoba for the first time. The rare Blade Vertigo (Vertigo milium) is also reported.
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Gemelli, F., C. R. Johnson, and J. T. Wright. "Gastropod communities associated with different morphologies of the intertidal seaweed Hormosira banksii." Marine and Freshwater Research 70, no. 2 (2019): 280. http://dx.doi.org/10.1071/mf18159.
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Hormosira banksii is an important intertidal habitat-forming seaweed in southern Australia that shows large variation in morphology. We examined the relationship between morphological variation in Hormosira and associated gastropod community structure, abundance and diversity in Tasmania, southern Australia. We sampled both Hormosira and gastropods from sites in two habitats (coast and estuary), two times (February–March and October–November) at two regions (northern and eastern Tasmania). There were distinct Hormosira morphs on the north coast (small individuals), east coast (intermediate sized individuals) and in estuaries (large individuals). Multivariate analysis showed that gastropod communities varied among the different algal morphologies, and suggest an influence of morphological traits, specifically thallus length, vesicle number and size, on the distribution patterns of gastropod species. Despite the finding of distinct gastropod communities associated with the different Hormosira morphs, because the different morphs occur in different locations with different physical conditions, we cannot unequivocally attribute the differences in gastropod communities to seaweed morphology per se. Nonetheless, our results confirm that H. banksii is an important foundation species in the intertidal zone and suggest a habitat-specific effect of algal morphological traits on gastropods.
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Jahid, A., and H. R Singh. "Diversity and Distribution of the Mangrove Gastropods of Kuala Selangor Nature Park, Selangor." International Journal of Engineering & Technology 7, no. 4.14 (2019): 86. http://dx.doi.org/10.14419/ijet.v7i4.14.27477.
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This study reports on the diversity and distribution of mangrove gastropods from Kuala Selangor Nature Park sampled from August to November 2017. The line transect with quadrat method was employed to sample gastropods which were handpicked from the various mangrove structures (root, stem, branch) and mangrove floor within 5m x 5m quadrats. Nineteen gastropod taxa were recorded from the Bruguiera, mixed (Bruguiera, Avicennia & Rhizophora), and Avicennia & Rhizophora zones. The Ellobiidae (Elobium aurisjudae and Cassidula aurisfelis), Potamidae (Cerithedia obtusa, Cerithidea cingulata and Telescopium telescopium), Muricidae (Chicoreus capucinus) and Naticidae (Nerita balteata) were the most distributed gastropod families at the study site. Gastropod horizontal distribution varied between tree zones (Bruguiera; Bruguiera-Avicennia-Rhizophora; and Avicennia-Rhizophora) and tree type (Brugueira, Rhizophora and Avicennia), while gastropod vertical distribution varied based on height on tree (0 – 120cm) and sub-habitats (roots, floor and trunk) as shown by the principle components analysis (PCA) biplots. The Margalef’s species richness (D=2.90) and Shannon-Weiner diversity (H’=2.32) was low which is typical of mangroves that are mature while Pielou’s evenness (J=0.77) was high implying lack of dominance by specific gastropod taxa.
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Yochelson, Ellis L., and B. L. Stinchcomb. "Recognition of Macluritella (Gastropoda) from the Upper Cambrian of Missouri and Nevada." Journal of Paleontology 61, no. 1 (1987): 56–61. http://dx.doi.org/10.1017/s0022336000028183.
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Open-coiled euomphalacean gastropods have been identified for the first time in the Upper Cambrian Eminence Dolomite of Missouri. These gastropods have a triangular whorl profile and are conspecific with Hyolithes walcotti described from the Upper Cambrian of Nevada. That species is questionably reassigned to the gastropod genus Macluritella, hitherto known only from the Lower Ordovician of Colorado.
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Ríos-Jara, Eduardo, Ceciel-M. Navarro-Caravantes, Cristian-M. Galván-Villa, and Ernesto Lopez-Uriarte. "Bivalves and Gastropods of the Gulf of Tehuantepec, Mexico: A Checklist of Species with Notes on Their Habitat and Local Distribution." Journal of Marine Biology 2009 (2009): 1–12. http://dx.doi.org/10.1155/2009/176801.
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The taxonomic composition of 160 species of bivalves and gastropods recorded in the Gulf of Tehuantepec is presented with information on their habitat and distribution along 10 different localities of the shoreline and 42 stations of the continental shelf. The species were on sandy and rocky beaches, coastal lagoons, estuaries, mangroves, rocky breakwaters of ports, and shallow subtidal areas (14–47 m depth). A total of 78 bivalve species and 82 gastropod species were recorded. Most of these were associated with sandy and rocky beaches and breakwaters of ports. The estuaries host 30 species and the coastal lagoons only two. In the shallow subtidal there were 18 gastropod species and 40 bivalve species representing 36.3% of all. This study adds 24 bivalve species and 29 gastropod species not recorded in previous studies for a total count of 213 species (102 bivalves and 111 gastropods) for Gulf of Tehuantepec.
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Désy, JC, J. F. Archambault, B. Pinel-Alloul, J. Hubert, and P. GC Campbell. "Relationships between total mercury in sediments and methyl mercury in the freshwater gastropod prosobranch Bithynia tentaculata in the St. Lawrence River, Quebec." Canadian Journal of Fisheries and Aquatic Sciences 57, S1 (2000): 164–73. http://dx.doi.org/10.1139/f99-231.
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Total Hg concentrations in sediment and methyl mercury (MeHg) levels in the gastropod species Bithynia tentaculata were evaluated at 21 stations in the fluvial corridor of the St. Lawrence River (Quebec, Canada). In the sediments (n = 21), total Hg concentrations ranged from 34 to 2790 ng·g dry weight-1. In the gastropods, MeHg concentrations varied from 15 to 290 ng·g dry weight-1 in undepurated gastropods (n = 20) and from 41 to 420 ng·g dry weight-1 in depurated gastropods (n = 13; without gut contents). The southern sector of Lake St. Louis, located near the Îles-de-la-Paix, had significantly higher Hg concentrations than any other sectors under study, both for total Hg in the sediments and MeHg in the gastropods. We established linear models to describe the relationships between Hg contamination in sediments and molluscs for the fluvial corridor of the St. Lawrence River and for the Lake St. Louis sector. Total Hg in sediments and MeHg in gastropods were highly correlated for all pooled stations (r = 0.83), and the relationship was even stronger for the Lake St. Louis stations (r = 0.92). Our study suggests that the gastropod B. tentaculata is a promising biomonitor species for assessing Hg contamination in the fluvial corridor and lakes of the St. Lawrence River.
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Neck, Raymond W. "Terrestrial Gastropod Succession in a Late Holocene Stream Deposit in South Texas." Quaternary Research 27, no. 2 (1987): 202–9. http://dx.doi.org/10.1016/0033-5894(87)90077-9.
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AbstractInvestigation of snail-bearing alluvium from the Smyth Crossing site in Uvalde County, Texas, indicates that the terrestrial gastropod fauna of this area has been stable for at least 3000 yr. However, relative proportions and presence/absence variations indicate changes in the relative occurrence of preferred microhabitats of certain snails. Gastropods from an excavated soil column reveal a succession of gastropod associations in response to succession of the plant community of the site from a riverside gravel bar to an upland savannah/grassland. Human impact on the gastropods is mostly contemporary, with apparent local extirpations of some species having occurred. The recovered paleofaunas provide no evidence for regional climatic change since 3000 yr B.P.
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Barros, M. R. F., R. A. Chagas, M. Herrmann, and A. M. Bezerra. "New record of the invasive snail Melanoides tuberculata (Gastropoda, Thiaridae) - Ceará State, Brazil." Brazilian Journal of Biology 80, no. 2 (2020): 368–72. http://dx.doi.org/10.1590/1519-6984.210408.
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Abstract Melanoides tuberculata is a freshwater gastropod native to Africa and Asia, and currently presents distributed worldwide. The first record of Melanoides tuberculata in South America occurred in Brazil, in the city of Santos, state of São Paulo, in 1967. Therefore, the objective of the present study is to report the occurrence of Melanoides tuberculata for Banana Lagoon and to characterize the current population situation. The gastropods were collected through direct visualization of shells, morphometric measurements of Melanoides tuberculata shells were determined using a digital caliper. After identifying the gastropod and its first distribution in the area, a preliminary descriptive analysis of the population was carried out. The gastropods were classified by grouping the individuals into four classes according to the shell width (mm). This is the first record of the occurrence of Melanoides tuberculata, in Banana Lagoon, Caucaia municipality, Ceará state, Northeast Brazil, being the largest specimen cited in the literature (33.77 mm) and 92.65% of the gastropods present in sizes above the first reproduction stages.
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Hutama, Haryo Farras Raditya, Retno Hartati, and Ali Djunaedi. "Makrozoobenthos Gastropoda pada Vegetasi Mangrove di Pesisir Utara, Semarang." BULETIN OSEANOGRAFI MARINA 8, no. 1 (2019): 37. http://dx.doi.org/10.14710/buloma.v8i1.22453.
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Kerusakan hutan mangrove yang terjadi karena adanya aktivitas manusia cukup mengkhawatirkan dan berpengaruh terhadap kelangsungan hidup biota yang hidup didalamnya, salah satunya adalah Gastropoda. Penelitian ini dilakukan untuk mengetahui komposisi jenis makrozoobenthos gastropoda dan menganalisa struktur komunitasnya. Pengambilan sampel dilaksanakan pada bulan Maret 2015 di 4 lokasi yakni Mangunharjo, Mangkang Wetan, Pantai Maron dan Trimulyo, Semarang. Penentuan lokasi sampling dengan metode purposive sampling method terbagi dari kelebatan mangrove lebat, sedang dan jarang pada setiap lokasi penelitian dengan pertimbangan pengaruh aliran sungai terhadap parameter disetiap stasiunnya.Klasifikasi kelebatan mangrove berdasarkan data sekunder kerapatan mangrove Pesisir Utara Semarang 2015. Pengambilan sampel gastropoda menggunakan metode kualitatif dengan transek 5m x 5m dan 1m x 1m dengan jumlah stasiun sebanyak 8 dan 3 kali pengulangan pada setiap stasiunnya. Hasil penelitian ditemukan 8 jenis spesies yang terdiri dari 4 famili yang berbeda.Famili Potamididae paling banyak ditemukan dengan jumlah 4 spesies. Ditemukan satu spesies Famili Neriitidae yakni Nerita sp. serta satu spesies Famili Ellobiidae yakni Cassidula sp.. Kelimpahan tertinggi terdapat pada Stasiun MR1 (25.667 ind./75m2) dan terendah distasiun MW3 (0.107 ind./75m2). Nilai Indeks Keanekaragaman masuk dalam kategori sedang, sedangkan nilai indeks keseragaman dalam kategori tinggi.Dalam penelitian ini menemukan spesies yang mendominasi pada 2 stasiun yaitu Stasiun MW1 dan MR1. The damage of the mangrove ecosystem which occur due to human activity is quite alarming and effect on the survival of biota that lived in it, one which is Gastropods. This research was conducted to find out the composition of macrozoobenthos gastropods and analyze its community structure. Sampling did on March 2015 at 4 locations, i.e., Mangunharjo, Mangkang Wetan, Maron and Trimulyo, Semarang. This study was conducted to determine and identify the community structure of gastropod macrozoobenthos in mangrove vegetation on the coast of Semarang The determination of sampling location use purposive sampling method that divide the dense mangrove luxuriance, moderate and rarely at location research. The dense mangrove classification based on secondary data from the landsat image of 8 and the data density of mangrove North Coastal Semarang 2015. Sampling use qualitative method with 5 m x 5 m transects and 12 stations with three-time repetitions for each stations. The results found gastropods 8 types of species comprising in 4 different families. Potamididae family is the most dominant where found 4 species. One species of Neriitidae family is found which Nerita sp. and one species of the Ellobidae family is also found, which Cassidula sp.. The highest abundance was found on Station MR1 (25.667 ind./75m2) and the lowest in station MW3 (0.107 ind./75m2). The value of the Diversity Index can be category as average while the Equitability Index value is high. In this study, found there is 2 dominance species on the whole research station, one at MW1 and the other at MR1.
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Hawkins, J. W., M. W. Lankester, R. A. Lautenschlager, and F. W. Bell. "Length–biomass and energy relationships of terrestrial gastropods in northern forest ecosystems." Canadian Journal of Zoology 75, no. 3 (1997): 501–5. http://dx.doi.org/10.1139/z97-061.
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Length–biomass models are a convenient and time-efficient method of estimating the biomass of invertebrates. Our purpose was to develop such a model for terrestrial gastropods that adequately predicted gastropod dry tissue biomass (Y) on the basis of animal length (X). The power equation Y = 0.172X1.688 (r2 = 0.85) proved to be the best model for this purpose. Gastropod dry tissue biomass was 6.52 ± 1.58 mg (mean ± SE) and, based on gastropod densities ranging from 2 to 38/m2 reported in the literature, snails and slugs active on the surface of the forest floor accounted for 2.5 and 6% of the total animal biomass and energy, respectively, of boreal forest ecosystems. However, because densities of gastropods in both the litter and underlying soil can reach 1607/m2, our results suggest that published values for total animal biomass (4.9 g/m2) and caloric energy (104 cal/m2) in boreal forest ecosystems are underestimated.
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LEE, KA JEONG, JONG SOO MOK, KI CHEOL SONG, et al. "First Detection and Seasonal Variation of Lipophilic Toxins Okadaic Acid, Dinophysistoxin-1, and Yessotoxin in Korean Gastropods." Journal of Food Protection 75, no. 11 (2012): 2000–2006. http://dx.doi.org/10.4315/0362-028x.jfp-12-192.
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Okadaic acid (OA), dinophysistoxin-1 (DTX1), pectenotoxin-2, and yessotoxin (YTX) are classes of lipophilic toxins found in marine animals. OA and DTX1 accumulation causes diarrhetic shellfish poisoning, a worldwide public health problem. Diarrhetic shellfish poisoning has not previously been reported in gastropods, which are widely consumed in Korea. Seasonal variation in marine lipophilic toxins in gastropods was investigated using liquid chromatography–tandem mass spectrometry. Eighty specimens of Neptunea cumingii, 65 specimens of Rapana venosa, and 95 specimens of Batillus cornutus were collected at the Tongyeong fish market on the southern coast of Korea between May 2009 and December 2010. OA, DTX1, and YTX were detected in meat and digestive glands in all gastropod species studied. Pectenotoxin-2 was not found in any sample tested. Lipophilic toxins were detected in the digestive glands of gastropods; no lipophilic toxin was detected in the salivary glands of the carnivorous gastropods, N. cumingii and R. venosa. The highest concentrations of OA (21.5 ng/g) and DTX1 (8.4 ng/g) were detected in the digestive glands of R. venosa, and the maximum concentration of YTX (13.7 ng/g) was found in the digestive glands of N. cumingii. The maximum toxicities in gastropod tissues were lower than the European standard for acceptable levels. The concentrations of lipophilic toxins in carnivorous gastropods showed a high degree of seasonal variation; lipophilic toxins in carnivorous gastropods were found predominantly in spring and summer. This is the first report of the occurrence of lipophilic toxins in Korean gastropods.
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MARKOVIĆ, VANJA, VUKAŠIN GOJŠINA, BORIS NOVAKOVIĆ, et al. "The freshwater molluscs of Serbia: Annotated checklist with remarks on distribution and protection status." Zootaxa 5003, no. 1 (2021): 1–64. http://dx.doi.org/10.11646/zootaxa.5003.1.1.
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We present a checklist of 86 valid freshwater mollusc species of Serbia (65 gastropods and 21 bivalves) belonging to 19 families (15 gastropods and four bivalves). The list is based on our latest research and includes data from published sources and personal communications. The most diverse family among gastropods is Planorbidae (16 species), while Sphaeriidae are most diverse within the bivalves (10 species). Ten species are local endemics (all of them gastropods), while eight are introduced species (three gastropods and five bivalves). The Danube River and its smaller tributaries harbour the most diverse gastropod community, with a total of 61 species (41 gastropods and 20 bivalves). The snail Theodoxus transversalis (Pfeiffer, 1828) and the bivalve Unio crassus Philipson, 1788 are listed as EN (endangered) on the global (IUCN) level, while the snail Plagigeyeria gladilini Kuščer, 1937 and the bivalves Pseudanodonta complanata (Rossmässler, 1835) and Sphaerium rivicola (Lamarck, 1818) are considered as VU (vulnerable) species. Of those IUCN taxa, only U. crassus is listed as protected on the national level (along with 12 mostly local endemic gastropod species). In comparison with the previous checklist of gastropods by Karaman & Karaman (2007), a total of seven species are added here: Belgrandiella serbica Glöer 2008, Bythinella istoka Glöer & Pešić 2014, B. nonveilleri Glöer 2008, B. pesterica Glöer 2008, Acroloxus lacustris (Linnaeus, 1758), Melanoides tuberculata (O.F. Müller, 1774) and Armiger crista (Linnaeus, 1758). In view of global and regional trends in taxonomy, ecology and invasive biology, an even richer diversity of the Serbian freshwater malocofauna can be expected.
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Colares, Renato, Thuany Machado, Filipe Machado Patel, et al. "REDE ECOLÓGICA DOS GASTRÓPODES ASSOCIADOS AO BANCO DE ALGAS DA PRAIA DA RIBANCEIRA, SANTA CATARINA, BRASIL." Oecologia Australis 25, no. 01 (2021): 47–58. http://dx.doi.org/10.4257/oeco.2021.2501.05.
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Among the rocky shores’ biota, the networks of interaction between macroalgae and associated organisms, especially gastropods, stand out. In order to contribute to the understanding of the ecology of rocky shores, this study aims to evaluate the relation between macroalgae and associated gastropods in Ribanceira Beach, Imbituba, Santa Catarina, Brazil. The survey of algae samples took place in a wet season, using 20 cm x 20 cm quadrants, allocated in 18 transects distributed equally in the infra and mesolittoral zones, with five points each. In the laboratory, algae were screened and associated gastropods identified. Concepts of network theory were applied for a better understanding of interactions among organisms, where connectance descriptors, niche overlap and centrality index for each species were calculated. Multivariate techniques were used to assess the significance of intertidal zones, morphofunctional group and other variables in the composition of the associated gastropods. The sampling resulted in a total of 1.466 gastropods, distributed in 14 species and nine families. In relation to the macroalgae, 14 species were identified, with seven presenting associated gastropods. The ecological network showed low connectance and niche overlap for both levels (gastropods and macroalgae), suggesting the existence of many specific interactions. The centrality values highlighted Eulithidium affine (C.B. Adams, 1850) and Sargassum cymosum C. Agardh as key species in the studied network. The mass and morphofunctional group of the macroalgae sampled showed influence in the composition of the associated community. Cortical algae, especially S. cymosum, stood out with high levels of species richness and species density of associated gastropods, suggesting importance in the structural complexity of macroalgae for gastropods. The non-significant effect of the tidal zone for the gastropod composition was highlighted, suggesting that the nesting and foraging stability provided by the macroalgae allows the same gastropod species to occur in both infralittoral and mesolittoral zones.
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MADIN, JOHN, BALU-ALAGAR VENMATHI MARAN, and SUET-MUN HO. "Gastropods in the Intertidal Shore of Kota Kinabalu, Sabah (Malaysian Borneo)." Borneo Journal of Resource Science and Technology 11, no. 1 (2021): 9–23. http://dx.doi.org/10.33736/bjrst.3371.2021.
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Intertidal gastropods provide numerous ecological benefits and are responsible for the dynamics of the intertidal shores habitat and its community assemblages. This study examined the community structure of gastropods in the intertidal shore located near the city of Kota Kinabalu, the capital of Sabah where coastal areas are rapidly developed for various purposes and consequently destroying natural habitats. A total of 36 gastropods species from 15 families were recorded. The Planaxis sulcatus was the most abundant species with a density of 480 ind. m-2 followed by Nodilittorina pyramidalis (182 ind. m-2) and Cellana radiata (97 ind. m-2) respectively. The number of species and their abundance, respectively, are almost three times lower than the number ever recorded for intertidal shores located in non-urban areas or remote locations. This suggests that the rapidly growing coastal urban areas threatening the diversity and abundance of intertidal gastropods. The density of gastropod (i.e. P. sulcatus & N. pyramidalis) was significantly (p<0.05) high at the lower intertidal shore where slope gradient is steeper with rocks and crevices are the major component of substrates compared to the upper or middle zone which is flatter and composed mainly of coral rubble and sand. Our study suggests that gastropod communities in intertidal shores located adjacent to the urban areas are threatened especially by anthropogenic factors such as frequent human visitations and modification of natural habitat. Future development in the intertidal shore should minimise habitat destruction and should consider infrastructures that encourage gastropod populations to grow and highlighting their ecological role for conservation reasons.
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Walker, Sally E. "Preservational constraints and ecological opportunities: the role of shell-inhabiting organisms in the fossil record." Paleontological Society Special Publications 6 (1992): 302. http://dx.doi.org/10.1017/s2475262200008625.
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Biological parameters, in addition to physical parameters, are important in determining past ecology, taphonomy and the effects of human intervention. Research conducted on a Recent community of gastropods and two late Pleistocene fossil assemblages from Puerto Penasco, Mexico, reveal a complex pattern of interrelationships among gastropod shell users. First, shell representation is biased in the intertidal of Puerto Penasco, Mexico, because of a complex mosaic of secondary shell occupants. Hermit crabs (five species) represent almost half (47%) of the intertidal gastropod shell resource available throughout the year. Living snails are represented by 17 out of the 32 gastropod taxa. Additionally, hermit amphipods (three species) occupy ten gastropod taxa. Hermit crabs and hermit amphipods retain the shells in anomalous habitats (that differ from the living snail). Second, physical factors act as a temporal component which affects shell use and availability during the seasons at Puerto Penasco. Late winter storms mix-up the intertidal distribution of living gastropods and hermit crabs. Subtidal to low intertidal shells appear in the high intertidal; living snails are buried under a thick bed of sand. Most importantly, empty shells become available, and the hermit amphipod population peaks. Thus, physical factors contribute to the demise of living snails (i.e, burial by sand) and the mixing of shells. However, the organisms (hermit crabs and amphipods) maintain this motif by retaining the shells in the anomalous habitats.Third, all hermit crab species (Paguristes anahuacus, Pagurus lepidus, Paguristes roseus), except for one (the high intertidal, Clibanarius digueti), have epi-and endobionts associated with the gastropod shell. More than 20 species of invertebrates bore into or encrust the hermitted shells at Penasco. Of these, the encrusting bryozoans Hippothoa, Hippopodinella adpressa, ?Floridia antiqua, Lichenopora, Antropora tincta and the boring spionid polychaetes (Polydora commensalis, Polydora, Boccardia) and spirorbid polychaetes (Spirorbis; Serpula) are important bionts to use in recognizing hermit crab shell use in the fossil record of the northern Gulf of California. The encrusting bryozoans (H. adpressa and A. tincta) are present on Pleistocene gastropods at the unusual Pelican Point terrace deposit (large gastropod shells preserved among large bryozoan encrusted cobbles) indicating hermit crab inhabitation. These bryozoans appear to protect the gastropods from taphonomic alteration.Finally, reworked fossil shells occur within the hermit crab guild and the beach drift assemblage. Hermit crabs retain fossil shells of the moon snail, Polinices, (n=two occurrences) and Turritella (n=3 occurrences). These species are common in the coquina beach rock which makes up the intertidal substrate of Puerto Penasco. However, reworking of fossil coquina is quite substantial in the beach drift assemblage. Three sampling periods (=150 samples) indicate the following: three species of fossil bivalves (Chione, Trachvcardium and Glycimeris) and five species of fossil gastropods (Oliva, Polinices, Muricanthus, Nassarius, and Turritella) dominated the beach drift assemblage (over 16, 600 fossil whole shells/fragments). Fossil Chione represented the most shells (958 valves;>15,557 fragments). Recent bivalves were represented by 1115 shells/fragments (representing 12 species) and Recent gastropods contained mostly fragments (1069 pieces; 30 species). Additionally, the fossil gastropods were large, unlike the species that occur today, which have been picked over by humans. Thus, a large part of active beach deposition at Puerto Penasco contains late Pleistocene shells, taphonomically altered by secondary occupants and beachcombers.
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Mattison, R. G., T. S. Dunn, R. E. B. Hanna, W. A. Nizami, and Q. M. Ali. "Population dynamics of freshwater gastropods and epidemiology of their helminth infections with emphasis on larval paramphistomes in northern India." Journal of Helminthology 69, no. 2 (1995): 125–38. http://dx.doi.org/10.1017/s0022149x00014012.
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AbstractNatural populations of the freshwater gastropods Bithynia tentaculata, Gyraulus convexiusculus, Helicorbis coenosus, Indoplanorbis exustus, Lymnaea acuminata, L. luteola and Vivipara bengalensis, were examined from October 1985 to September 1986 at seven transmission sites for paramphistomiasis, fascioliasis and other gastropod-borne infections in Aligarh, northern India. Gastropod diversity and the type and abundance of vegetation were highest at sites containing permanent water bodies. The distributions of H. coenosus and L. acuminata were positively correlated with the type and abundance of vegetation at these sites. Ephemeral water bodies contained B. tentaculata, I. exustus and L. luteola which were resistant to desiccation during the hot season. Aestivation in these gastropods preceded pronounced breeding activity which began with the onset of the monsoon season. Multivariate analysis (by principal components) was used to investigate relationships between each species of gastropod, their site of occurrence and levels of infection with larval helminths. Seasonal variations in numbers and size class structure in these gastropods were found to influence their prevalences of infection with larval helminths. Metacercarial and cysticercoid infections were more prevalent in smaller size classes of B. tentaculata and V. bengalensis, whereas larval paramphistomes were more prevalent in larger size classes of G. convexiusculus, I. exustus and L. luteola. Attempts were made to equate these findings with seasonality in egg shedding by certain species of adult paramphistomes occurring in domestic ruminants.