Journal articles: 'Tree snail'

1

Sato, Nozomu. "Prey-tracking behavior and prey preferences in a tree-climbing firefly." PeerJ 7 (December 16, 2019): e8080. http://dx.doi.org/10.7717/peerj.8080.

Full text

Abstract:

Prey-tracking behavior is common in snail-killing predators, but in the family Lampyridae, this behavior has been validated in only a single species even though this Coleopteran family includes many specialist snail predators. The endemic firefly Pyrocoelia atripennis is a major snail-killing predator in the Yaeyama Islands of Japan, and the larvae often climb on the trees and grasses at night. This tree-climbing behavior is relevant to larval food choices and anti-predatory defenses of land snails. This study examined whether lampyrid larvae can track snail mucus trails and examined larval prey preferences using alternative choice experiments. In addition, predation trials were conducted to evaluate which snail species are potential prey. P. atripennis larvae significantly selected mucous trails over distilled water or control (no-trail) treatments. In addition, a semi-arboreal species was preferred over a ground-dwelling species. In predation trials, the larvae preyed on five out of 10 endemic snail species, all of which were semi-arboreal or arboreal species. Ground-dwelling Cyclophoridae and Aegista species have effective anti-predatory defenses consisting of an operculum or “foamy-lid” that fills the shell aperture. Whether the prey has a lid affects the predation success of lampyrid larvae, and larval tree-climbing behavior may be an adaptation used to search for semi-arboreal and arboreal land snails that lack defensive lids. Furthermore, snail mucus left on the plant stem may help the lampyrid larvae to locate their prey.

APA, Harvard, Vancouver, ISO, and other styles

2

González-Guillén, Adrián, David Berschauer, Roberto Pérez-Rivero, and Abelardo Méndez-Hernández. "The Never Spoken Poignant Connection Between Cuban Tree Snails and Carpentry/Crafts/Art: the case of Polymita and Liguus." Festivus 53, no. 2 (2021): 128–35. http://dx.doi.org/10.54173/f532128.

Full text

Abstract:

The extinction of endemic Cuban tree snail colonies are shown to be directly caused by habitat fragmentation due to deforestation. Hardwood extraction and exploitation started in the 16 th century and has steadily increased throughout the Cuban archipelago. This article is the first investigation into the connection between overexploitation of natural resources by local communities and the extinction of Cuban tree snail colonies. The authors have compiled a list of 345 hardwood trees species, many of which have been clear cut and over used by Cuban farmers, carpenters, artists and crafts people. Of those hardwood tree species, 84 species are known to be host plants for endemic Cuban Liguus and Polymita tree snails. Since the late 1960s, there has been an accelerated demand for hardwood for traditional craftworks. That demand became more aggressive after the opening of the country to international tourism in the 1990s. This desire for exotic hardwoods has endangered both the precious hardwood tree species and the endemic tree snail species that inhabit them. It is our hope that with the development of field guides on endemic Cuban hardwood tree species that educators can raise awareness of this issue while discouraging unmanaged or uncontrolled harvesting of these hardwoods in Cuba. Encouraging artists and crafts people to create miniature wood sculptures could be an alternative sustainable solution.

APA, Harvard, Vancouver, ISO, and other styles

3

Strouse, Evan, Melissa R. Price, and David R. Sischo. "Dietary effects on fitness in captive-reared Hawaiian tree snails." PeerJ 9 (September 23, 2021): e11789. http://dx.doi.org/10.7717/peerj.11789.

Full text

Abstract:

The native terrestrial snail fauna of the Hawaiian Islands faces numerous threats that have led to severe range reductions, population declines, and extinction of species. With the continued declines of many wild populations, a crucial component of preserving Hawaiian terrestrial snail biodiversity is through captive rearing programs, like that implemented by the Hawai‘i Department of Land and Natural Resources Snail Extinction Prevention Program. Rare and endangered tree snails in the family Achatinellidae, which feed on epiphytic microbial communities, are maintained in captivity with a diet that includes native vegetation brought in from nearby forests, as well as a cultured fungus originally isolated from native host trees. Recent mortality events in lab populations have been attributed to wild-gathered vegetation. These events have increased interest in developing a completely manufactured or cultured diet that would eliminate the need for exposure to wild-gathered plants. This study compared survival and egg production in Auriculella diaphana provided with lab-cultured fungus, and those provided with wild vegetation. We compared the number of eggs laid and number of deaths among three treatments: (1) wild collected vegetation only; (2) wild vegetation supplemented with laboratory-cultured fungus; and (3) laboratory cultured fungus only. Mortality did not significantly differ among treatments, but the number of eggs laid was significantly higher in snails provided wild vegetation and cultured fungus (F = 24.998; P < 0.001), compared with those provided with only wild vegetation (t = 1.88, P = 0.032) or only cultured fungus (t = 4.530, P = 0.004). Our results suggest: (1) the existing strain of cultured fungus alone is not sufficient to maintain captive-reared snail populations; (2) the additional energy or calcium provided by the cultured fungus appears to enhance egg reproduction in captive-reared populations; (3) the presence or absence of live vegetation influences snail behavior, including aestivation and egg laying. These results highlight the importance of ongoing research to culture additional species of fungi at a rate that could support captive-reared populations, as the diversity of fungi present in wild epiphytic microbial communities may be important for snail reproductive health.

APA, Harvard, Vancouver, ISO, and other styles

4

Hadfield, Michael G., and Donna J. Haraway. "The Tree Snail Manifesto." Current Anthropology 60, S20 (2019): S209—S235. http://dx.doi.org/10.1086/703377.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Herdiawan, Boni, Putri Afin Nurhayati, and Galuh Ayu Chantika Dwitara. "Inventory of Land Snail in Darungan Lake, Bromo Tengger Semeru National Park 2019." Jurnal Biota 6, no. 1 (2020): 42–44. http://dx.doi.org/10.19109/biota.v6i1.5219.

Full text

Abstract:

This study aims to determine the diversity of land snails that have never been revealed before. The location of this research is in the forest in the Ranu Darungan Resort area of Bromo Tengger Semeru National Park. The method used in this study is the 1.5 km transect line method. Land snails are often found behind leaves, around tree roots, and around leaf litter. The results of this study obtained 20 species of land snails, each of which has different characteristics. Land snail identification is using a land snail identification book. The lack of information about land snails in the Ranu Darungan Resort area makes this research expected to be the basis for further research.

APA, Harvard, Vancouver, ISO, and other styles

6

Coote, Trevor, Eric Loeve, Jean-Yves Meyer, and Dave Clarke. "Extant populations of endemic partulids on Tahiti, French Polynesia." Oryx 33, no. 3 (1999): 215–22. http://dx.doi.org/10.1046/j.1365-3008.1999.00065.x.

Full text

Abstract:

AbstractThe current distribution of endemic partulid snails on Tahiti in French Polynesia reflects the danger of ignoring expert advice and introducing an alien species into a fragile island ecosystem. The endemic tree-snail fauna of the island now faces extinction. Although the extinction of the native species of Partula (Partulidae; Polynesian tree snails) on Moorea in French Polynesia is well known in the world of conservation biology, losses on other Pacific islands are less well described. This paper presents an update on the status of partulid snail populations on Tahiti in the light of fieldwork undertaken between 1995 and 1997. Native snails still exist in good numbers in two areas, at opposite ends of the island. In other areas, sightings of single or a few individuals indicate remnant populations now on the edge of extinction. Efforts to protect these populations and others in French Polynesia are being planned in collaboration with local government authorities.

APA, Harvard, Vancouver, ISO, and other styles

7

Flores-Ricardo, Libertad A., Mario J. Gordillo-Pérez, Camila Bosch-Diaz, Karen M. M. Steensma, and Bernardo Reyes-Tur. "Communal oviposition of the Cuban tree snail Polymita muscarum (Gastropoda: Cepolidae) in an agroecosystem." Novitates Caribaea, no. 17 (January 18, 2021): 187–95. http://dx.doi.org/10.33800/nc.vi17.254.

Full text

Abstract:

Communal oviposition remains to be convincingly shown in terrestrial gastropods. The present study reports data on communal oviposition of a threatened tree snail, Polymita muscarum, in a Cuban agroecosystem from Yaguajay, Banes municipality, Holguín province, in a fixed plot of 119 m2. Between 2011 and 2012, we took data on oviposition site microhabitats, the number of snails/nest and the number of ovipositions/day. We found communal oviposition involving between two and 20 individuals. Usually the oviposition took place underground, at the base of trees and shrubs, between the roots. This study indicates the potential value of understanding behavioral ecology in order to better support conservation programs.

APA, Harvard, Vancouver, ISO, and other styles

8

Min, Fengyang, Jiasheng Wang, Xiaoguang Liu, et al. "Environmental Factors Affecting Freshwater Snail Intermediate Hosts in Shenzhen and Adjacent Region, South China." Tropical Medicine and Infectious Disease 7, no. 12 (2022): 426. http://dx.doi.org/10.3390/tropicalmed7120426.

Full text

Abstract:

Sound knowledge of the local distribution and diversity of freshwater snail intermediate hosts and the factors driving the occurrence and abundance of them is crucial to understanding snail-borne parasitic disease transmission and to setting up effective interventions in endemic areas. In this study, we investigated the freshwater snails, water quality parameters, physical characteristics of habitats, predators and competitors, and human activity variables at 102 sites during December 2018 and August 2019 in Shenzhen and adjacent areas in China. We used decision tree models and canonical correspondence analysis to identify the main environmental and biotic factors affecting the occurrence and abundance of snail species. A total of nine species of snail were collected throughout the study area, with Biomphalaria straminea, Sinotaia quadrata, and Physella acuta being the most predominant species. Our study showed that the most important variables affecting the abundance and occurrence of snail species were the presence of predators and competitors, macrophyte cover, chlorophyll-a, substrate type, river depth, and water velocity. In terms of human activities, snail species occurred more frequently and in larger numbers in water bodies affected by human disturbances, especially for sewage discharge, which may reduce the occurrence and abundance of snail predators and competitors. These findings suggest that proper management of water bodies to reduce water pollution may increase the abundance of snail predators and competitors, and should be considered in integrated snail control strategies in the study area.

APA, Harvard, Vancouver, ISO, and other styles

9

Morse, J. G., N. J. Sakovich, and M. P. Parrella. "Evaluation of Baits for Control of Brown Garden Snail in California, 1984." Insecticide and Acaricide Tests 10, no. 1 (1985): 54–55. http://dx.doi.org/10.1093/iat/10.1.54a.

Full text

Abstract:

Abstract Various bait formulations of metaldehyde, methiocarb and larvin were tested for control of brown garden snails in an 11-year-old grapefruit grove (NS rows rowspacing 24 x 12 ft) in Buckhorn CA using 4 single-tree replicates per treatment. Trees were devoid of weeds, but some leaf litter had accumulated under each tree. The grove was irrigated on 22 May, 4 Jun, and 11 Jun using low volume sprinklers, 1 located between each tree in a row. Counts of live snails pretreatment and dead snails posttreatment were taken within 1-yard-square counting frames (positions marked by stakes) which were placed half-way under the drip line of each tree on the NE, SE, SW and NW quadrants. Each count was taken of snails of all life stages within the 4 square yard area per tree. On each date, all dead snails were removed from the sample area so that they would not be recounted at a later date. Treatments were applied in a circle at the drip lines of the trees using dime-sized drops for the Deadline 40 (4% metaldehyde) or by sprinkling the dry baits in a narrow band.

APA, Harvard, Vancouver, ISO, and other styles

10

Brodie, Gilianne, Gary M. Barker, Helen Pippard, Cindy S. Bick, and Diarmaid Ó. Foighil. "Disappearing jewels: an urgent need for conservation of Fiji’s partulid tree snail fauna." Pacific Conservation Biology 22, no. 3 (2016): 249. http://dx.doi.org/10.1071/pc14931.

Full text

Abstract:

Where conservation status of island non-marine molluscs is known, snails tend to be one of the most threatened faunal groups. However, published information regarding island gastropod conservation status, diversity and endemism is frequently unavailable despite the importance of this information for the formulation of biodiversity action plans and conservation strategy. Fiji, for example, has a diverse native land snail fauna (>240 species) with an endemism level of ~80%, but only within the last few years has any information about any of these species been available to the national biodiversity reporting repository. For one lineage in particular, members of the tree snail family Partulidae, with four endemic Fiji Island species, the conservation status of the group has never been assessed. However, based on the alarming extinction rates documented in partulid snail species on other Pacific Islands, information about the occurrence and status of these taxa is urgently needed for Fiji’s biodiversity action plan. To redress this information void, we formulated the Fijian Partulid Tree Snail Project, consisting of five components: (1) raising awareness; (2) locating populations and monitoring population trends; (3) elucidating patterns of genetic diversity; (4) creating action partnerships; and (5) conducting disturbance gradient analyses. The overall goal was to characterise mechanisms leading to persistence of partulids in the face of increasing anthropogenic disturbance. In the initial stages of this project, existing information on Fiji’s partulids was collated and two small, remote islands in the Fiji archipelago were surveyed to investigate whether tree snails persisted there. Living populations of Partula lanceolata and empty shells of Partula leefei were found on Cicia Island in Lau, and on Rotuma Island in the Rotuma Group, respectively. DNA analyses confirm a sister relationship between the two Partula species in north-eastern Lau, P. lirata and P. lanceolata, with both sharing a sister relationship with a member of the same genus in Vanuatu – P. auraniana Hartman, 1888. Prioritisation and further sampling of additional islands, and residual native habitat on less accessible islands and islets, is needed to fully assess the conservation status of all four Fijian species via the IUCN Red List process. Moreover, the basic descriptive information and associated studies reported here will serve to raise awareness of Fiji’s endemic tree snails particularly in communities that had no prior knowledge of their special conservation status; and also at a wider national, regional and global level. Community awareness is particularly vital as the willing support of land owners in the relevant small island communities is critical to implementing any future conservation action plans.

APA, Harvard, Vancouver, ISO, and other styles

11

Okon, B., L. A. Ibom, A. Dauda, A. E. Bassey, M. O. Awodiran, and M. O. Etukudo. "Chromosome numbers, evolutionary relationships and divergence among three breeds of giant african land snails in Nigeria." Nigerian Journal of Animal Production 44, no. 4 (2020): 1–10. http://dx.doi.org/10.51791/njap.v44i4.614.

Full text

Abstract:

A number of studies have been carried out on the reproductive and growth performance of these breeds of giant African land snails, but not much is documented on chromosome, evolutionary relationships and divergence studies. Forty snails and 10 of each breed of giant African land snails Archachatina marginata (AM), Achatina achatina (AA) and Achatina fulica (AF) and two varieties of A. marginata [A. marginata var. saturalis (AMS) and A. marginata var. ovum (AMO)] were used for the chromosomes numbers analyses. Slides for chromosome identification were prepared using the ovotestes and the cells were examined for spread atmetaphase. The haploid (n) chromosome numbers obtained revealed and confirmed that AF, AA, AMS and AMO snails have 27, 30, 28 and 28 chromosomes respectively. Also 13 amino acid sequences were retrieved from the National Centre for Biotechnology Information with accession numbers: ALD09273, AAY62497, ACA 10148 and AKQ 76237 for AM; AKQ 76253, AKQ 76250, CDL 67813, CDL 67813 and AKQ 76249 for AA and SP/P35903, PDB/5CZL, KZM 80032 and YP009049167 for AF snails. The evolutionary history was inferred using the Neighbour-Joining method. Phylogenetic tree analysis by Neighbour- Joining (NJ) was constructed using 10 out of the 13 amino acid sequences. The reliability of the tree was calculated by boostrap confidence value with 1000 boot strapiterations using MEGA 7 software.The phylogenetic trees showed that these snail breeds are highly divergent. A. achatina was separately related to itself; whereas A. marginata slightly mingled with A. fulica. The degrees of divergence obtained signified that they have evolved from different ancestors. The evolutionary distances were computed with the remaining three amino acid sequences using the Poisson Correction method. Very high and far apart average genetic distances of 0.923±0.018, 0.926±0.018 and 0.926±0.017 were obtained for AA vs AF, AF vs AM and AA vs AM snails respectively, confirming that these snail breeds are genetically far apart between themselves. The results obtained for chromosome numbers, evolutionary relationship and average genetic distances might be apanacea in further selection and molecular classification of giant African land snails (GALS) in Nigeria.

APA, Harvard, Vancouver, ISO, and other styles

12

Alharbi, Mohammad H., Cynthia Iravoga, Sekeleghe A. Kayuni, et al. "First Molecular Identification of Bulinus africanus in Lake Malawi Implicated in Transmitting Schistosoma Parasites." Tropical Medicine and Infectious Disease 7, no. 8 (2022): 195. http://dx.doi.org/10.3390/tropicalmed7080195.

Full text

Abstract:

The freshwater snail genus Bulinus plays a vital role in transmitting parasites of the Schistosoma haematobium group. A hybrid schistosome between S. haematobium and S. mattheei has been recently detected using DNA-based identification methods in school children along the Lake Malawi shoreline in Mangochi District. This finding raised the need for contemporary revaluation of local interactions between schistosomes and snails, with a particular focus on snail species within the Bulinus africanus group. In 2017 and 2018, malacological surveys sampled several freshwater sites in Mangochi District. Collected snails (n = 250) were characterised using cytochrome oxidase subunit 1 gene (cox1), with DNA barcoding of the ‘Folmer’ region and a rapid PCR-RFLP typing assay with double digestion with HaeIII and SacI restriction enzymes. DNA cox1 sequence analysis, with phylogenetic tree construction, suggested the presence of at least three B. africanus group taxa in Lake Malawi, B. globosus, alongside first reports of B. africanus and B. angolensis, which can be differentiated by PCR-RFLP methods. In addition, a total of 30 of the 106 B. africanus group snails (28.30%) were positive to the Schistosoma-specific screen using real-time PCR methods. This study provides new insight into the recent changes in the epidemiology of urogenital schistosomiasis as likely driven by a new diversity of B. africanus group snails within the Lake.

APA, Harvard, Vancouver, ISO, and other styles

13

Aldhoun, J. A., L. Kolářová, P. Horák, and K. Skírnisson. "Bird schistosome diversity in Iceland: molecular evidence." Journal of Helminthology 83, no. 2 (2009): 173–80. http://dx.doi.org/10.1017/s0022149x09289371.

Full text

Abstract:

AbstractDuring the years 2002–2007, Icelandic freshwater snails and birds from different orders were examined for bird schistosomes. Only the snail Radix peregra and anatid birds proved to be infected. In total, 32 samples of bird schistosome cercariae from seven localities and four samples of adults of Anas platyrhynchos and Mergus serrator from two localities were used for sequencing of the internal transcibed spacer (ITS) region of rDNA. Based on the sequence and position in the phylogenetic tree, five species/genotypes of bird schistosomes were identified. Three of them correspond to the sequences in GenBank for Trichobilharzia franki, Trichobilharzia sp. JR-2007 from Anas penelope (isolates Pl7 and Pl10) and schistosomatid sp. JR-2004 from Physa fontinalis. The other two species/genotypes belong to the genus Trichobilharzia, but their further determination was not possible due to lack of data. All of these species/genotypes develop in R. peregra, probably the only suitable intermediate host species in Iceland. As T. franki and schistosomatid sp. JR-2004 were previously reported from other snail species, the findings from Iceland proved that, under some circumstances, bird schistosomes are able to adapt to a different snail species; some of them can even adapt to a snail belonging to a different gastropod family. High diversity of bird schistosomes in Iceland is probably linked with migratory flyways of birds, as several bird species from Iceland overwinter in western Europe as well as in North America.

APA, Harvard, Vancouver, ISO, and other styles

14

Temreshev, I. I., B. K. Kopzhasarov, Z. B. Beknazarova, J. M. Isina, and A. S. Dzhanbatyrov. "New and little-known invertebrate species that damage the cultivated apple tree (Malus domestica) and the sivers apple tree (Malus sieversii) in the southeast of Kazakhstan. Message 1. Mollusca." BULLETIN of the L.N. Gumilyov Eurasian National University. BIOSCIENCE Series 139, no. 2 (2022): 29–43. http://dx.doi.org/10.32523/2616-7034-2022-139-2-29-43.

Full text

Abstract:

The article presents new data on the composition, abundance, and distribution of harmful malacofauna of apple orchards and Sivers apple tree growing areas in the southeast of Kazakhstan. In total, 11 harmful species of mollusks belonging to 5 genera from 4 families of the Stylommatophora order of the Gastropoda class were noted. Most of them (8 species) belong to the families Camaenidae and Agriolimacidae (4 species in each family). The remaining 2 species belong to the Succineidae family and 1 species belongs to the Geomitridae. 4 species - Fruticicola almaatini (Skvortzov, 1940), Deroceras reticulatum (O. F. Müller, 1774), Novisuccinea martensiana Nevill, 1878 and Oxyloma elegans (Risso, 1826) - were not previously noted as organisms that harm the cultivated apple tree and the Sivers apple tree. The most numerous, harmful and widespread are the garden snail Fruticicola lantzi (Lindholm, 1927) and the reticulated slug D. reticulatum. Local damage during mass reproduction can be caused by the snail F. almaatini, the slender amber O. In addition to the above-mentioned gastropods, the following species of mollusks have been observed in the growing areas of cultivated apple and Sivers apple trees: Turanena tenuispira Schileyko, 1984, Pseudonapaeus entodon (E.v. Martens, 1882) (Enidae), Punctum pygmaeum (Draparnaud, 1801) (Punctidae), Zonitoides nitidus (müller, 1774) (Gastrodontidae), Macrochlamys lessini Westerlund, 1902, M. turanica Martens, 1874 (Ariophantidae). Their number is very low, and the economic significance for the cultivated apple and Sivers apple trees is unknown and requires clarification.

APA, Harvard, Vancouver, ISO, and other styles

15

Guo, Qiqi, Meiling Huang, Ming Li, et al. "Diversity and Evolutionary Analysis of Venom Insulin Derived from Cone Snails." Toxins 16, no. 1 (2024): 34. http://dx.doi.org/10.3390/toxins16010034.

Full text

Abstract:

Cone snails possess a diverse array of novel peptide toxins, which selectively target ion channels and receptors in the nervous and cardiovascular systems. These numerous novel peptide toxins are a valuable resource for future marine drug development. In this review, we compared and analyzed the sequence diversity, three-dimensional structural variations, and evolutionary aspects of venom insulin derived from different cone snail species. The comparative analysis reveals that there are significant variations in the sequences and three-dimensional structures of venom insulins from cone snails with different feeding habits. Notably, the venom insulin of some piscivorous cone snails exhibits a greater similarity to humans and zebrafish insulins. It is important to emphasize that these venom insulins play a crucial role in the predatory strategies of these cone snails. Furthermore, a phylogenetic tree was constructed to trace the lineage of venom insulin sequences, shedding light on the evolutionary interconnections among cone snails with diverse diets.

APA, Harvard, Vancouver, ISO, and other styles

16

Lee, Taehwan, John B. Burch, Younghun Jung, Trevor Coote, Paul Pearce-Kelly, and Diarmaid Ó Foighil. "Tahitian tree snail mitochondrial clades survived recent mass extirpation." Current Biology 17, no. 13 (2007): R502—R503. http://dx.doi.org/10.1016/j.cub.2007.05.006.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Gerlach, Justin, Paul Pearce-Kelly, Christophe Brocherieux, Jo Elliott, and Kayla Garcia. "Partula tree snail conservation back on track." Oryx 57, no. 6 (2023): 696. http://dx.doi.org/10.1017/s003060532300114x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

18

Skeldon, Monica A., Matthew A. Vadeboncoeur, Steven P. Hamburg, and Joel D. Blum. "Terrestrial gastropod responses to an ecosystem-level calcium manipulation in a northern hardwood forest." Canadian Journal of Zoology 85, no. 9 (2007): 994–1007. http://dx.doi.org/10.1139/z07-084.

Full text

Abstract:

The effects of acid deposition on soil calcium (Ca), and in turn on land snail populations, have been of heightened concern for several decades. We compiled a 10 year record (1997–2006) of gastropod abundance on two small watersheds at the Hubbard Brook Experimental Forest, one of which was treated with a Ca addition in 1999. In years 3–7 post Ca addition, snail abundance in the treated watershed was 73% higher than in the reference area (p < 0.001); there was no significant difference in the 3 years prior to treatment, and no significant difference in slug abundance in any year. We analyzed relationships between snail density and microsite spatial variation in leaf-litter Ca concentration, litter-layer thickness, tree species composition, slope, dead wood, and forest-floor light level. We found that snail abundance was significantly correlated with litter Ca concentration (p < 0.001) and negatively correlated with the importance value of American beech (p = 0.05). Isotopic-tracer analysis indicated that, on average, 76% of Ca in snail shells 5 years post treatment was derived from the added Ca. However, interannual variation in snail numbers indicates that other factors beyond available Ca have a strong influence on snail abundance.

APA, Harvard, Vancouver, ISO, and other styles

19

Klorvuttimontara, Sravut, Chanidaporn Tumpeesuwan, and Sakboworn Tumpeesuwan. "Distribution range and extinction risk of tree snail subgenus Amphidromus (Pulmonata: Camaenidae) in Thailand." Raffles Bulletin of Zoology 65 (June 8, 2017): 189–97. https://doi.org/10.5281/zenodo.5355951.

Full text

Abstract:

Klorvuttimontara, Sravut, Tumpeesuwan, Chanidaporn, Tumpeesuwan, Sakboworn (2017): Distribution range and extinction risk of tree snail subgenus Amphidromus (Pulmonata: Camaenidae) in Thailand. Raffles Bulletin of Zoology 65: 189-197, DOI: 10.5281/zenodo.5355951

APA, Harvard, Vancouver, ISO, and other styles

20

Sutcharit, Chirasak, and Somsak Panha. "Neotype Designation And Re-Description Of The Vanishing Tree Snail, Amphidromus (Amphidromus) Mundus (Pfeiffer, 1853) (Pulmonata: Camaenidae)." Raffles Bulletin of Zoology 59, no. 2 (2011): 139–43. https://doi.org/10.5281/zenodo.4509237.

Full text

Abstract:

Sutcharit, Chirasak, Panha, Somsak (2011): Neotype Designation And Re-Description Of The Vanishing Tree Snail, Amphidromus (Amphidromus) Mundus (Pfeiffer, 1853) (Pulmonata: Camaenidae). Raffles Bulletin of Zoology 59 (2): 139-143, DOI: 10.5281/zenodo.4509237

APA, Harvard, Vancouver, ISO, and other styles

21

Nahok, Benchawan, Sakboworn Tumpeesuwan, and Chanidaporn Tumpeesuwan. "Anceyoconcha, a replacement name for the preoccupied tree snail genus Giardia Ancey, 1907 (Pulmonata: Helicoidea: Camaenidae)." Raffles Bulletin of Zoology 68 (April 1, 2020): 80–90. https://doi.org/10.26107/RBZ-2020-0009.

Full text

Abstract:

Nahok, Benchawan, Tumpeesuwan, Sakboworn, Tumpeesuwan, Chanidaporn (2020): Anceyoconcha, a replacement name for the preoccupied tree snail genus Giardia Ancey, 1907 (Pulmonata: Helicoidea: Camaenidae). Raffles Bulletin of Zoology 68: 80-90, DOI: 10.26107/RBZ-2020-0009

APA, Harvard, Vancouver, ISO, and other styles

22

Echevarría Rentería, Jonard David, and Guido Medina-Rangel. "RANGE EXTENSION OF Sibon ayerbeorum VERA-PÉREZ, 2019 (SERPENTES: DIPSADIDAE) IN COLOMBIA." Revista Latinoamericana de Herpetología 4, no. 1 (2021): 221. http://dx.doi.org/10.22201/fc.25942158e.2021.1.190.

Full text

Abstract:

Ayerbe’s snail-eater Sibon ayerbeorum is a nocturnal, tree-dwelling snake which was recently described based on four specimens collected in the proximity of Munchique National Natural Park, department of Cauca, Colombia, above 1000 m altitude. We here expand the distribution range of S. ayerbeorum into the department of Chocó, Colombia. The new record extends the distributional range of the Ayerbe’s snail-eater by nearly 288 km in a straight-line north-western ward from its type locality and is more than 1000 m below it.

APA, Harvard, Vancouver, ISO, and other styles

23

Whitmore, Nathan. "Harnessing local ecological knowledge for conservation decision making via Wisdom of Crowds: the case of the Manus green tree snail Papustyla pulcherrima." Oryx 50, no. 4 (2015): 684–92. http://dx.doi.org/10.1017/s0030605315000526.

Full text

Abstract:

AbstractThe shell of the Manus green tree snail Papustyla pulcherrima is renowned for its beauty and is subject to international protection under CITES, having been harvested intensively in the past. To determine its threat status, and whether further conservation action is justified, an inexpensive Wisdom of Crowds approach was used to estimate the change in relative density of the snail between 1998 and 2013. Local men and women were approached around the main market on Manus Island, Papua New Guinea, and asked to map the relative abundance of the snail on an ordinal scale, based on their personal observations in 2013 and 1998 (a year of cultural significance). The spatial abundance data from 400 surveys were analysed using an information-theoretic approach. A suite of cumulative link models incorporating geographical factors was used to determine the magnitude of the change and to investigate possible biological influences underpinning the reported pattern. High abundance of the snail was associated with intact forested areas, high elevation and low population density. A slow decline was evident, with the median percentage of map cells where the snail was categorized as plentiful decreasing by c. 20% between the 2 years. On this basis a categorization of Near Threatened was advocated for the species. Although it is arguable that Wisdom of Crowds methods cannot be substituted for in situ quantification, the approach appears to have utility as a preliminary assessment for further conservation expenditure, and as a tool for determining threat status.

APA, Harvard, Vancouver, ISO, and other styles

24

Inkhavilay, Khamla, Chirasak Sutcharit, and Somsak Panha. "Taxonomic review of the tree snail genus Amphidromus Albers, 1850 (Pulmonata: Camaenidae) in Laos, with the description of two new species." European Journal of Taxonomy, no. 330 (June 13, 2017): 1–40. https://doi.org/10.5852/ejt.2017.330.

Full text

Abstract:

Inkhavilay, Khamla, Sutcharit, Chirasak, Panha, Somsak (2017): Taxonomic review of the tree snail genus Amphidromus Albers, 1850 (Pulmonata: Camaenidae) in Laos, with the description of two new species. European Journal of Taxonomy 330: 1-40, DOI: 10.5852/ejt.2017.330

APA, Harvard, Vancouver, ISO, and other styles

25

Lee, Taehwan, John B. Burch, Trevor Coote, et al. "Moorean tree snail survival revisited: a multi-island genealogical perspective." BMC Evolutionary Biology 9, no. 1 (2009): 204. http://dx.doi.org/10.1186/1471-2148-9-204.

Full text

APA, Harvard, Vancouver, ISO, and other styles

26

Hall, Kevin T., and Michael G. Hadfield. "Application of harmonic radar technology to monitor tree snail dispersal." Invertebrate Biology 128, no. 1 (2009): 9–15. http://dx.doi.org/10.1111/j.1744-7410.2008.00163.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

27

Sischo, David R., and Michael G. Hadfield. "The tree snail on Rota Island, Northern Mariana Islands, long identified as Partula gibba (Partulidae), is a different species." ZooKeys 1037 (May 17, 2021): 105–18. http://dx.doi.org/10.3897/zookeys.1037.56303.

Full text

Abstract:

Tree snails in the family Partulidae are widespread across the tropical Pacific, with endemic species occurring on most high islands. Partulid species have faced catastrophic range reductions and extinctions due primarily to introduced predators. Consequently, most extant species are threatened with imminent extinction. The U.S. administered Mariana Islands, consisting of Guam in the South and the Commonwealth of the Northern Mariana Islands (CNMI) in the north, historically harbored six endemic partulid species, half of which are thought to be extinct. While conducting a phylogenetic assessment of Partula gibba, an extant tree-snail with a range spanning at least seven islands within the archipelago, it was discovered that what has been identified as P. gibba on the island of Rota is a misidentified cryptic species. Here we use molecular phylogenetics, shell morphometrics and reproductive anatomy to describe it as a new species, Partula lutaensissp. nov.. Because the new species has suffered population declines and has a restricted range, consisting solely of the small island of Rota, we highlight the urgent need for conservation measures.

APA, Harvard, Vancouver, ISO, and other styles

28

Sischo, David R., and Michael G. Hadfield. "The tree snail on Rota Island, Northern Mariana Islands, long identified as Partula gibba (Partulidae), is a different species." ZooKeys 1037 (May 17, 2021): 105–18. https://doi.org/10.3897/zookeys.1037.56303.

Full text

Abstract:

Tree snails in the family Partulidae are widespread across the tropical Pacific, with endemic species occurring on most high islands. Partulid species have faced catastrophic range reductions and extinctions due primarily to introduced predators. Consequently, most extant species are threatened with imminent extinction. The U.S. administered Mariana Islands, consisting of Guam in the South and the Commonwealth of the Northern Mariana Islands (CNMI) in the north, historically harbored six endemic partulid species, half of which are thought to be extinct. While conducting a phylogenetic assessment of Partula gibba, an extant tree-snail with a range spanning at least seven islands within the archipelago, it was discovered that what has been identified as P. gibba on the island of Rota is a misidentified cryptic species. Here we use molecular phylogenetics, shell morphometrics and reproductive anatomy to describe it as a new species, Partula lutaensis sp. nov.. Because the new species has suffered population declines and has a restricted range, consisting solely of the small island of Rota, we highlight the urgent need for conservation measures.

APA, Harvard, Vancouver, ISO, and other styles

29

De Kock, K. N., and C. T. Wolmarans. "Distribution and habitats of Gyraulus costulatus, potential snail intermediate host of intestinal flukes of the family Echinostomatidae in South Africa." Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie 25, no. 1 (2006): 19–31. http://dx.doi.org/10.4102/satnt.v25i1.141.

Full text

Abstract:

This paper focuses on the geographical distribution and habitats of Gyraulus costulatus as reflected by the 736 localities currently on record in the database of the National Freshwater Snail Collection (NFSC) of South Africa. Although a wide variety of water body types was reported for this species, the largest number of samples were yielded by rivers, streams and dams which were described as perennial with predominantly fresh and clear water. A mainly stony substrate and the presence of aquatic vegetation were recorded for the majority of localities at the time of survey. An integrated decision tree constructed from the data indicated that altitude, temperature and water bodies were the most important of the factors investigated that determined the documented geographical distribution of this species in South Africa. This was supported by the effect size values calculated separately for each factor. Since the early eighties of the previous century, surveys to monitor and update the geographical distribution of freshwater snails and snail-borne parasitic diseases have been relegated to a low priority issue and this is a matter of concern. It is recommended that the exact role of G. costulatus in the epidemiology of economically important helminth parasites in South Africa should be investigated.

APA, Harvard, Vancouver, ISO, and other styles

30

Sullivan, Robert M. "Phylogenetic relationships among subclades within the Trinity bristle snail species complex, riverine barriers, and re-classification." California Fish and Wildlife Journal, CESA Special Issue (July 6, 2021): 107–45. http://dx.doi.org/10.51492/cfwj.cesasi.6.

Full text

Abstract:

The Trinity bristle snail (Monadenia setosa) is listed as a threatened species under the California Endangered Species Act (CESA). In northern California, populations of this endemic terrestrial gastropod occur in rare, isolated, and highly fragmented locations within the greater Trinity Basin. Since 1952 when it was originally described, the taxonomic status of the Trinity bristle snail has been questioned based on unpublished information limited in geographic scope and sample size, which resulted in the taxon being reduced from species status (M. setosa) to subspecific status (M. i. setosa) within the Redwood sideband (M. infumata) species complex. Primary objectives of the present study were to: 1) use DNA extraction and PCR sequencing to gain insight into patterns of genetic variation and phylogenetic relationships among a larger sample of endemic populations of the Trinity bristle snail; 2) re-evaluate the systematic and taxonomic status of the species using outgroup analysis and references samples from sympatric ecologically co-occurring taxa within the genus Monadenia; and 3) evaluate the potential biogeographic effects of major riverine systems on genetic differentiation among relic and disjunct populations within the Trinity Basin. Results of the DNA sequence analysis using several different tree reconstruction methods revealed that subspecies of the Redwood sideband (M. i. subcarinata), Yellow-based sideband (M. i. ochromphalus), and the Trinity bristle (M. i. setosa) exhibited a phylogenetic signal at > 95% species probability. Except for the Yellow-based sideband, molecular evidence detected the presence of several morphologically cryptic subclades within each species clade formerly undescribed by the scientific community. Syntopic1 ecological relationships between subclades of the Trinity bristle snail and the Redwood sideband occurred in several areas within the geographic range of the Trinity bristle snail, which indicated that these subclades were conservatively differentiated at the subspecific level. A Bayesian coalescent tree showed that genetic variation 1 Syntopy refers to the joint occurrence of two species in the same habitat at the same time, which may result in hybridization between closely related taxa or sister species. In contrast, sympatric species occur together in the same region, but do not necessarily share the same localities as syntopic species do (Futuma 2009). among allopatric subclades of the Trinity bristle snail and the Redwood sideband were congruent with hydrological discontinuities associated with site-specific riparian stream corridors and the primary river systems within the Trinity Basin. Correlation analysis revealed a pattern of area effects, wherein sparsely bristled Trinity bristle snails were generally found to the northwest and more abundantly bristled individuals to the southeast in relation to primary river corridors that bisect the central Trinity Basin. A similar but opposite trend was observed in the directional pattern of banding. Here the most conspicuously banded individuals were found in samples distributed to the northwest while individuals with less conspicuous banding patterns occurred in a more southeasterly direction in relation to primary riverine corridors. These geographic patterns of bristles and bands appeared to reflect shallow clines that were evident in samples of both the Trinity bristle snail and the Redwood sideband. Parsimony character state reconstructions revealed that the presence of bristles and conspicuousness of bands was widespread among genetic samples, but these attributes did not provide a definitive morphological character that could be used to distinguish among co-occurring taxa.

APA, Harvard, Vancouver, ISO, and other styles

31

Sutcharit, Chirasak, Fred Naggs, Jonathan D. Ablett, Pham Van Sang, Hao Luong Van, and Somsak Panha. "Anatomical note on a tree snail Amphidromus (Amphidromus) cambojiensis (Reeve, 1860) from Vietnam (Eupulmonata: Camaenidae)." Journal of Natural History 55, no. 17-18 (2021): 1059–69. https://doi.org/10.1080/00222933.2021.1933230.

Full text

Abstract:

Sutcharit, Chirasak, Naggs, Fred, Ablett, Jonathan D., Sang, Pham Van, Van Hao, Luong, Panha, Somsak (2021): Anatomical note on a tree snail Amphidromus (Amphidromus) cambojiensis (Reeve, 1860) from Vietnam (Eupulmonata: Camaenidae). Journal of Natural History 55 (17-18): 1059-1069, DOI: 10.1080/00222933.2021.1933230, URL: http://dx.doi.org/10.1080/00222933.2021.1933230

APA, Harvard, Vancouver, ISO, and other styles

32

SUTCHARIT, C., T. ASAMI, and S. PANHA. "Evolution of whole-body enantiomorphy in the tree snail genus Amphidromus." Journal of Evolutionary Biology 20, no. 2 (2007): 661–72. http://dx.doi.org/10.1111/j.1420-9101.2006.01246.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

33

Abe, Eniola, Yun-Hai Guo, Haimo Shen, et al. "Phylogeography of Bulinus truncatus (Audouin, 1827) (Gastropoda: Planorbidae) in Selected African Countries." Tropical Medicine and Infectious Disease 3, no. 4 (2018): 127. http://dx.doi.org/10.3390/tropicalmed3040127.

Full text

Abstract:

The transmission of some schistosome parasites is dependent on the planorbid snail hosts. Bulinus truncatus is important in urinary schistosomiasis epidemiology in Africa. Hence, there is a need to define the snails’ phylogeography. This study assessed the population genetic structure of B. truncatus from Giza and Sharkia (Egypt), Barakat (Sudan) and Madziwa, Shamva District (Zimbabwe) using mitochondrial cytochrome oxidase subunit 1 gene (COI) and internal transcribed spacer 1 (ITS 1) markers. COI was sequenced from 94 B. truncatus samples including 38 (Egypt), 36 (Sudan) and 20 (Zimbabwe). However, only 51 ITS 1 sequences were identified from Egypt (28) and Sudan (23) (because of failure in either amplification or sequencing). The unique COI haplotypes of B. truncatus sequences observed were 6, 11, and 6 for Egypt, Sudan, and Zimbabwe, respectively. Also, 3 and 2 unique ITS 1 haplotypes were observed in sequences from Egypt and Sudan respectively. Mitochondrial DNA sequences from Sudan and Zimbabwe indicated high haplotype diversity with 0.768 and 0.784, respectively, while relatively low haplotype diversity was also observed for sequences from Egypt (0.334). The location of populations from Egypt and Sudan on the B. truncatus clade agrees with the location of both countries geographically. The clustering of the Zimbabwe sequences on different locations on the clade can be attributed to individuals with different genotypes within the population. No significant variation was observed within B. truncatus populations from Egypt and Sudan as indicated by the ITS 1 tree. This study investigated the genetic diversity of B. truncatus from Giza and Sharkia (Egypt), Barakat area (Sudan), and Madziwa (Zimbabwe), which is necessary for snail host surveillance in the study areas and also provided genomic data of this important snail species from the sampled countries.

APA, Harvard, Vancouver, ISO, and other styles

34

Dumidae, Abdulhakam, Chanakan Subkrasae, Jiranun Ardpairin, et al. "Population genetic structure of Indoplanorbis exustus (Gastropoda: Planorbidae) in Thailand and its infection with trematode cercariae." PLOS ONE 19, no. 1 (2024): e0297761. http://dx.doi.org/10.1371/journal.pone.0297761.

Full text

Abstract:

Indoplanorbis exustus is a freshwater gastropod belonging to the family Planorbidae. This snail is widely distributed across the tropics and plays an important role as the intermediate host for trematodes. However, relatively little is understood regarding the genetic relationship between I. exustus and trematodes. The goals of this study were to investigate the current transmission status of trematode cercariae in I. exustus in Thailand and to examine the genetic diversity, genetic structure, and demographic history of I. exustus. We collected 575 I. exustus from 21 provinces across six regions of Thailand and investigated cercarial infections by using the shedding method. I. exustus from two provinces were infected with cercarial trematodes, and two types of cercarial stages were molecularly identified as furcocercous cercaria and xiphidiocercariae. Phylogenetic tree analysis based on 28S rDNA and ITS2 sequences demonstrated that furcocercous cercaria and xiphidiocercariae were closely clustered with a clade of Euclinostomum sp. and Xiphidiocercariae sp., respectively. Phylogenetic and network analyses of I. exustus haplotypes based on the COI, 16S rDNA, and ITS1 genes demonstrated four main clades. Only snails in clade A were distributed in all regions of Thailand and harbored trematode cercariae. The level of genetic diversity of I. exustus was relatively high, but most populations were not genetically different, thus suggesting the appearance of gene flow within the I. exustus populations. Overall, the haplotype network was star-shaped, thus suggesting the recent demographic expansion of populations. This result was also supported by the unimodal mode of the mismatch distribution graph and the large negative values of the neutrality tests. Therefore, the I. exustus snail was likely another freshwater snail of the invasive species in Thailand. This information will aid in monitoring the spread of the parasitic trematodes carried by I. exustus from different populations.

APA, Harvard, Vancouver, ISO, and other styles

35

Haase, Martin, Carola Greve, Rainer Hutterer, and Bernhard Misof. "Amplified fragment length polymorphisms, the evolution of the land snail genus Theba (Stylommatophora: Helicidae), and an objective approach for relating fossils to internal nodes of a phylogenetic tree using geometric morphometrics." Zoological Journal of the Linnean Society 171, no. 1 (2014): 92–107. https://doi.org/10.1111/zoj.12123.

Full text

Abstract:

Haase, Martin, Greve, Carola, Hutterer, Rainer, Misof, Bernhard (2014): Amplified fragment length polymorphisms, the evolution of the land snail genus Theba (Stylommatophora: Helicidae), and an objective approach for relating fossils to internal nodes of a phylogenetic tree using geometric morphometrics. Zoological Journal of the Linnean Society 171 (1): 92-107, DOI: 10.1111/zoj.12123, URL: http://dx.doi.org/10.1111/zoj.12123

APA, Harvard, Vancouver, ISO, and other styles

36

Subhan, Ahmad, T. Yuwanta, J. Hp Sidadolog, and E. S. Rohaeni. "Effect of steamed sago and golden snail flour as substitution of yellow corn on performance of male duck of Alabio, Mojosari and MA." Jurnal Ilmu Ternak dan Veteriner 15, no. 3 (2012): 165–73. https://doi.org/10.14334/jitv.v15i3.654.

Full text

Abstract:

This study was aimed at finding out the effects of combining steaming sago (Metroxylon Spp) and golden snail flourÂ (Pomacea Spp) as the source of energy in duck ration, substituting yellow corn,Â on the performance ofÂ male Alabio, Mojosari, and their cross (MA). One hundred and ninety two young male ducks from the three breeds of 7 days old were assigned in 48 units of cage (4 ducks/cage). Research method applied was Completely Randomized Design with factorial pattern (3x4). The first factor was duck breeds (a) consisted of tree duck breeds: Alabio duck, Mojosari duck and Raja duck and the second factor was types of ration: R0 (control/100% basal ration), R1 (basal ration + 13% steaming sago and 2% golden snail flour), R2 (basal ration + 26% steaming sago and 4% golden snail flour) and R3 (basal ration + 39% steaming sago and 6% golden snail flour). All treatments were repeated four times. The observed variables were performance of ducks: body weight, body weight gain, ration consumption and ration conversion. Results indicated that breed had significant effect (P 0.05) on body weight, body weight gain and ration conversion. Meanwhile, ration had significant effect (P 0.05) on ration consumption, body weight gain, and final body weight. It is concluded that the combination of steaming sago and golden snail flour up to 45% of the ration could replace the need for yellow corn as the source of energy in the ration without affecting the performance of male ducks of 1 â€“ 8 weeks old. Cross male ducks were better than that male Alabio ducks and Mojosari because they were more efficient in converting ration into meat which resulted in higher body weight gain. Key words: Steaming Sago, Golden Snail Flour, Male Ducks, Performance

APA, Harvard, Vancouver, ISO, and other styles

37

Saeki, Ikuyo, Shigeru Niwa, Noriyuki Osada, et al. "Adaptive significance of arboreality: field evidence from a tree-climbing land snail." Animal Behaviour 127 (May 2017): 53–66. http://dx.doi.org/10.1016/j.anbehav.2017.02.022.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

Phil Willson, Julia Froese. "Snail shells in Tree Swallow nest boxes interest three generations of birders." Blue Jay 80, no. 2 (2022): 39. http://dx.doi.org/10.29173/bluejay6343.

Full text

APA, Harvard, Vancouver, ISO, and other styles

39

Шиков, Евгений Викторович. "Water vole Arvicola amphibius (Linnaeus, 1758) (Arvicolidae) as an agent of biological control of a tree snail Arianta arbustorum (Linnaeus, 1758) (Mollusca, Gastropoda, Helicidae)." Herald of Tver State University. Series: Biology and Ecology, no. 4(60) (December 25, 2020): 43–54. http://dx.doi.org/10.26456/vtbio171.

Full text

Abstract:

Древесная улитка Arianta arbustorum, в последние десятилетия распространившаяся в центре Русской равнины, стала опасным вредителем сельского хозяйства. Заселяя природные биотопы, она вытесняет аборигенные виды как растений, так и моллюсков. Эффективные меры борьбы с A. arbustorum не разработаны. Даётся оценка жизнедеятельности водяной полёвки Arvicola amphibius по отношению к древесной улитке. Плотность A. arbustorum в саду около нор водяной полёвки 2433 экз/м2, а на удалении 5 метров от нор - 5231 экз/м2. Разница статистически достоверна. Показано, что поедание водяной полёвкой древесных улиток локально снижает их плотность. Водяная полёвка выступает как природный агент биологического контроля A. arbustorum, поддерживающий видовое многообразие в природе. Установлено, что осенью 65% всех взрослых A. arbustorum закапываются в землю, и уже недоступны для поедания водяными полёвками. Кормовые запасы водяной полёвки на зиму из моркови и картофеля обнаружены в 45 м от ближайшего огорода. The Wood snail Arianta arbustorum, which in recent decades has spread in the center of the Russian Plain, has become a dangerous pest of agriculture. Settling natural biotopes, it crowds out indigenous species of both plants and mollusks. Effective control measures against A. arbustorum have not been developed. Here we assess the activity of the water vole Arvicola amphibius in relation to the Wood snail. The density of A. arbustorum in the garden near the water vole burrows is 2433 ind./m2, while at a distance of 5 meters from the burrows it becomes 5231 ind./ m2. The difference is statistically significant. Water vole eating wood snails locally reduce their density. Voles thus act as a natural biological control agent of A. arbustorum, preserving species diversity. In the fall around 65% of A. arbustorum adults burrow into the ground and are no longer available for water voles. Winter fodder stocks of a Water vole with carrots and potatoes were found 45 m from the nearest garden.

APA, Harvard, Vancouver, ISO, and other styles

40

Thaewnon-ngiw, B., S. Klinbunga, K. Phanwichien, N. Sangduen, N. Lauhachinda, and P. Menasveta. "Genetic Diversity of Introduced (Pomacea canaliculata) and Native (PILA) Apple Snails in Thailand Revealed by Randomly Amplified Polymorphic DNA (RAPD) Analysis." ASEAN Journal on Science and Technology for Development 20, no. 3&4 (2017): 289–306. http://dx.doi.org/10.29037/ajstd.360.

Full text

Abstract:

Genetic diversity of the introduced golden apple snail, Pomacea canaliculata (Lamarck, 1822) and four native apple snails; Pila ampullacea (Linneaus, 1758), P. angelica (Annandale, 1920), P. pesmei (Morelet, 1889) and P. polita (Deshayes, 1830) in Thailand were studied by RAPD analysis. Two hundred and two polymorphic fragments (180-1500 bp in length) were generated across overall investigated samples (N = 254) using three informative primers (OPA07, OPB10 and UBC122). The percentages of polymorphic bands were 98.86%, 94.56%, 90.91%, 96.94% and 95.51% for Pomacea canaliculata, P. ampullacea, P. angelica, P. pesmei and P. polita, respectively. This indicated high genetic polymorphism of these taxa. A neighbor-joining tree between pairs of geographic samples within Pomacea canaliculata suggested a lack of phylogeography in this species. Moreover, candidate species-specific RAPD markers (pKUSCARPILA-F/R) found in Pomacea canaliculata (340 bp, OPB10), P. ampullcea (640 bp, OPA07), P. angelica (380 bp, UBC122) and Pila snails (430 bp, OPA07) were cloned and sequenced. Locus-specific primers were designed and tested against the target and nontarget species. A 259 bp SCAR marker was found in 95.0% of Pila apple snails (N = 163) but not in Pomacea canaliculata (N = 30). Therefore, this SCAR marker could be used in coupling with a Pomacea canaliculata-specific RAPD marker to unambiguously differentiate the introduced and native apple snails in Thailand.

APA, Harvard, Vancouver, ISO, and other styles

41

Dahdouh-Guebas, F., M. Verneirt, J. F. Tack, D. Van Speybroeck, and N. Koedam. "Propagule predators in Kenyan mangroves and their possible effect on regeneration." Marine and Freshwater Research 49, no. 4 (1998): 345. http://dx.doi.org/10.1071/mf97108.

Full text

Abstract:

Grapsid crabs can play a considerable role in the predation of mangrove propagules and possibly are a threat to the regeneration of mangroves, whether natural or artificial. Experiments consisting of artificial plantation of mangrove juveniles were set up in Gazi Bay (Kenya). Grapsid crabs, particularly Neosarmatium meinerti in the most landward fringe and N. smithii and Sesarma guttatum in the middle fringe of the mangrove forest, were found to be a regeneration-limiting factor. Almost 100% (n = 40) of the landward plantations were cleared. There was a slight initial preference for Rhizophora propagules lying horizontally on the mangrove floor, which simulates the position of a stranding propagule. In Mida Creek (Kenya) the snail Terebralia palustris was observed predating mangrove propagules. This study shows that crabs may affect the regeneration potential of mangroves, and snails might also be a factor in predation. A need to actively search for ways to protect re-afforestation plots from predators of mangrove tree juveniles is necessary.

APA, Harvard, Vancouver, ISO, and other styles

42

Temreshev, Izbasar I., Arman M. Makezhanov, Natalya A. Yakovleva, et al. "New records of the adventive land snail Helix lucorum (Gastropoda: Helicidae) in Kazakhstan." Acta Biologica Sibirica 10 (August 26, 2024): 791–802. https://doi.org/10.5281/zenodo.13368894.

Full text

Abstract:

Snail Helix lucorum Linnaeus, 1758, was first found on the territory of Kazakhstan in 2020. This species is invasive for the country. A stable population of the snail has been discovered in parklands in Kentau and Shymkent cities in the Turkistan oblast, in the city of Taraz in the Jambyl oblast, South Kazakhstan, and in the Almaty city in the South-East Kazakhstan. The nearest point where H. lucorum lives is the city of Tashkent (Uzbekistan), where this species was found in 2012. According to the local residents, tree seedlings were brought from Tashkent for landscaping the cities of Kentau and Shymkent. Thus, Tashkent was the most probavle source of the invasion. Further dispersal of H. lucorum in the South and South-East Kazakhstan, on the territory of Turkestan, Jambyl and Almaty oblasts is expected.

APA, Harvard, Vancouver, ISO, and other styles

43

Páll-Gergely, Barna, and Cătălin-Constantin Roibu. "Land snail fauna of the Humosu Secular Forest (Suceava County, Romania); a new locality of Serrulina serrulata (L. Pfeiffer, 1847) (Gastropoda: Pulmonata: Clausiliidae)." Malacologica Bohemoslovaca 10 (August 10, 2011): 48–50. http://dx.doi.org/10.5817/mab2011-10-48.

Full text

Abstract:

The paper reports faunistic data on the land snail fauna of the protected beech forest reserve of Fagetul Secular Humosu (Suceava County, Romania). We found several species with Carpathian distribution, and the study area is probably the easternmost locality of these species. The Humosu Forest Reserve is the fourth locality of Serrulina serrulata (L. Pfeiffer, 1847) in Romania. The species survival requires occurrence of preserved old-growth forests with decaying tree trunks and logs.

APA, Harvard, Vancouver, ISO, and other styles

44

Páll-Gergely, Barna, and Cătălin-Constantin Roibu. "Land snail fauna of the Humosu Secular Forest (Suceava County, Romania); a new locality of Serrulina serrulata (L. Pfeiffer, 1847) (Gastropoda: Pulmonata: Clausiliidae)." Malacologica Bohemoslovaca 10 (August 10, 2011): 48–50. https://doi.org/10.5817/MaB2011-10-48.

Full text

Abstract:

The paper reports faunistic data on the land snail fauna of the protected beech forest reserve of Fagetul Secular Humosu (Suceava County, Romania). We found several species with Carpathian distribution, and the study area is probably the easternmost locality of these species. The Humosu Forest Reserve is the fourth locality of Serrulina serrulata (L. Pfeiffer, 1847) in Romania. The species survival requires occurrence of preserved old-growth forests with decaying tree trunks and logs.

APA, Harvard, Vancouver, ISO, and other styles

45

Hillis, D. M., M. T. Dixon, and A. L. Jones. "Minimal Genetic Variation in a Morphologically Diverse Species (Florida Tree Snail, Liguus fasciatus)." Journal of Heredity 82, no. 4 (1991): 282–86. http://dx.doi.org/10.1093/oxfordjournals.jhered.a111087.

Full text

APA, Harvard, Vancouver, ISO, and other styles

46

FORYS, E. A. "THE LIKELY CAUSE OF EXTINCTION OF THE TREE SNAIL ORTHALICUS RESES RESES (SAY)." Journal Molluscan Studies 67, no. 3 (2001): 369–76. http://dx.doi.org/10.1093/mollus/67.3.369.

Full text

APA, Harvard, Vancouver, ISO, and other styles

47

Fatimatuzzahra, Fatimatuzzahra, Adetha Putriana, Jemmy Jumadi, Dian Fita Lestari, and Bambang Sri Anggoro. "The Comparison between Tree Sorrel and Snake Plant on the Hatchability Inhibition of Apple Snail Eggs." Biosfer: Jurnal Tadris Biologi 11, no. 1 (2020): 43–50. http://dx.doi.org/10.24042/biosfer.v1i1.6145.

Full text

Abstract:

This study aimed to compare and determine the hatchability inhibition of the tree sorrel extract (Averrhoa bilimbi L.) and snake plant as natural ovicide of apple snail (Pomacea canaliculata L.). This study employed the completely randomized design (CRD). The negative controls were the extracts with the concentrations of 1%, 1.5%, 2%, 2.5%, 3%, and a positive control. Data analysis used was one-way ANOVA and then continued by Least Significant Difference (LSD) test. The results showed that tree sorrel extract with 3% concentration had the highest inhibitory on the hatchability of apple snail eggs compared to the snake plant extract (Sansevieria trifasciata P.) with a comparison value of 19.47%. Perbandingandaya Hambat Tetas Telur Keong Mas dari Buah Belimbing Wuluh dan Daun Lidah MertuaAbstrak: Tujuan penelitian ini untuk membandingkan dan mengetahui daya hambat tetas telur keong mas dari ekstrak buah belimbing wuluh (Averrhoa bilimbi L.) dan daun lidah mertua sebagai ovisida alami keong mas (Pomacea canaliculata L.). Desain penelitian menggunakan Rancangan Acak Lengkap (RAL) dengan konsentrasi yaitu kontrol negatif, 1%, 1,5%, 2%, 2,5%, 3% dan kontrol positif. Analisis data menggunakan uji One Way Anova dilanjutkan dengan ujiBeda NyataTerkecil (BNT). Hasil penelitian menunjukkan bahwa ekstrak buah belimbing wuluh dengan konsentrasi 3% mempunyai daya hambat tertinggi terhadap penetasan telur keong mas dibandingkan ekstrak daun lidah mertua (Sansevieria trifasciata P.), yaitu sebesar 19,47%.

APA, Harvard, Vancouver, ISO, and other styles

48

Beier, Colin M., Anne M. Woods, Kenneth P. Hotopp, et al. "Changes in faunal and vegetation communities along a soil calcium gradient in northern hardwood forests." Canadian Journal of Forest Research 42, no. 6 (2012): 1141–52. http://dx.doi.org/10.1139/x2012-071.

Full text

Abstract:

Depletion of Ca from forest soils due to acidic deposition has had potentially pervasive effects on forest communities, but these impacts remain largely unknown. Because snails, salamanders, and plants play essential roles in the Ca cycle of northern hardwood forests, we hypothesized that their community diversity, abundance, and structure would vary with differences in biotic Ca availability. To test this hypothesis, we sampled 12 upland hardwood forests representing a soil Ca gradient in the Adirondack Mountains, New York (USA), where chronic deposition has resulted in acidified soils but where areas of well-buffered soils remain Ca rich due to parent materials. Along the gradient of increasing soil [Ca2+], we observed increasing trends in snail community richness and abundance, live biomass of redback salamanders ( Plethodon cinereus (Green, 1818)), and canopy tree basal area. Salamander communities were dominated by mountain dusky salamanders ( Desmognathus ochrophaeus Cope, 1859) at Ca-poor sites and changed continuously along the Ca gradient to become dominated by redback salamanders at the Ca-rich sites. Several known calciphilic species of snails and plants were found only at the highest-Ca sites. Our results indicated that Ca availability, which is shaped by geology and acidic deposition inputs, influences northern hardwood forest ecosystems at multiple trophic levels, although the underlying mechanisms require further study.

APA, Harvard, Vancouver, ISO, and other styles

49

Jarčuška, Benjamín, and Lucia Jarčušková Danková. "Poznámky k zoskupovaniu slimáka záhradného Helix pomatia [Comments on the aggregation behaviour of the Roman snail (Helix pomatia)]." Malacologica Bohemoslovaca 13 (July 4, 2014): 114–15. http://dx.doi.org/10.5817/mab2014-13-114.

Full text

Abstract:

In this paper we report an observation of an interesting behaviour of the Roman snail Helix pomatia. Two groups of several dozens of individuals were found in a beech forest in the Veľká Fatra Mts. (Central Slovakia) on May 2014. Both sites had an open tree canopy with sparse and low herbaceous vegetation. Approximately 25–35 individuals per 20–30 square meters were found there, while several pairs of them were attached with their feet together. This observation brings several questions related to species behaviour and reproductive strategy.

APA, Harvard, Vancouver, ISO, and other styles

50

Jarčuška, Benjamín, and Danková Lucia Jarčušková. "Poznámky k zoskupovaniu slimáka záhradného Helix pomatia [Comments on the aggregation behaviour of the Roman snail (Helix pomatia)]." Malacologica Bohemoslovaca 13 (July 4, 2014): 114–15. https://doi.org/10.5817/MaB2014-13-114.

Full text

Abstract:

In this paper we report an observation of an interesting behaviour of the Roman snail Helix pomatia. Two groups of several dozens of individuals were found in a beech forest in the Veľká Fatra Mts. (Central Slovakia) on May 2014. Both sites had an open tree canopy with sparse and low herbaceous vegetation. Approximately 25–35 individuals per 20–30 square meters were found there, while several pairs of them were attached with their feet together. This observation brings several questions related to species behaviour and reproductive strategy.

APA, Harvard, Vancouver, ISO, and other styles

Journal articles on the topic 'Tree snail'

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles