Relevant bibliographies by topics / Copepoda Copepoda Calanoida

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Academic literature on the topic 'Copepoda Copepoda Calanoida'

Author: Grafiati
Published: 4 June 2021
Last updated: 3 February 2022

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Journal articles on the topic "Copepoda Copepoda Calanoida"

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Santos-Wisniewski, MJ, and O. Rocha. "Spatial distribution and secondary production of Copepoda in a tropical reservoir: Barra Bonita, SP, Brazil." Brazilian Journal of Biology 67, no. 2 (May 2007): 223–33. http://dx.doi.org/10.1590/s1519-69842007000200007.

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The present paper aims to describe the spatial distribution of zooplankton copepods, their biomass and instantaneous secondary production, in Barra Bonita, a large eutrophic, polymitic reservoir (22° 29' S and 48° 34' W) on the Tietê River, of the Paraná basin. Sampling was carried out during two seasons: dry winter and rainy summer. Species composition, age structure and numerical density of each copepod species population were analyzed at 25 sampling stations. Secondary production was calculated for Copepoda, the dominant group in zooplankton communities, taking Calanoida and Cyclopoida separately. Copepoda represented the largest portion of the total zooplankton biomass, the dominant species being Notodiaptomus iheringi among the Calanoida and Mesocyclops ogunnus and Thermocyclops decipiens among the Cyclopoida. The production of Copepoda was higher during the rainy summer (23.61 mgDW.m-3.d-1 in January 1995) than during the dry winter season (14 mgDW.m-3.d-1 in August 1995), following the general pattern of abundance for the whole zooplankton community. Among the copepods, Cyclopoida production was higher than that of Calanoida, a pattern commonly observed for tropical lakes and reservoirs. Barra Bonita copepods are very productive, but there was a great degree of spatial heterogeneity, related to the physical and chemical conditions, particularly the level of nutrients and also to phytoplankton biomass.
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Samchyshyna, L. "Ecological Characteristic of Calanoids (Copepoda, Calanoida) of the Inland Waters of Ukraine." Vestnik Zoologii 42, no. 2 (January 1, 2008): e-32-e-37. http://dx.doi.org/10.2478/v10058-008-0007-1.

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Ecological Characteristic of Calanoids (Copepoda, Calanoida) of the Inland Waters of UkraineThe article presents analyze of known published data and own observations on ecology of freshwater and brackish calanoid copepods of fauna of Ukraine. The briefly characteristic of main types of waterbodies inhabited by calanoids is given. The relation of species to the important ecological factors of water environment like temperature, habitat permanence, salinity, pH, current, suspended matters, and interaction with other hydrobionts is analyzed.
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Uttieri, Marco, Euan R. Brown, Geoff A. Boxshall, and Maria Grazia Mazzocchi. "Morphology of antennular sensors in Clausocalanus furcatus (Copepoda: Calanoida)." Journal of the Marine Biological Association of the United Kingdom 88, no. 3 (May 2008): 535–41. http://dx.doi.org/10.1017/s0025315408000854.

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The success of planktonic copepods in aquatic environments is dependent on efficient sensing of their three-dimensional surroundings. The detection of external cues is of importance for the localization of other organisms (prey, predators and mates), and is mediated by an array of mechano- and chemoreceptors located on the paired antennules (A1).We investigated the morphology and distribution pattern of A1 sensory structures in the adult female of Clausocalanus furcatus (Copepoda: Calanoida) using different techniques (camera lucida, scanning and transmission electron microscopy and laser scanning confocal microscopy) each focusing on a specific aspect of the structures analysed. Integration of the information collected shows that C. furcatus possesses an array of mechanical, chemical and dual-function sensors over its A1, by which the copepod can detect different stimuli from the environment. Results are discussed in the light of the unique swimming behaviour displayed by this widespread epipelagic copepod.
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Abo-Taleb, Hamdy, Mohamed Ashour, Ahmed El-Shafei, Abed Alataway, and Mahmoud M. Maaty. "Biodiversity of Calanoida Copepoda in Different Habitats of the North-Western Red Sea (Hurghada Shelf)." Water 12, no. 3 (February 29, 2020): 656. http://dx.doi.org/10.3390/w12030656.

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Little is known about the diversity of Calanoida, Copepoda, in different habitats of the north-western Red Sea. In this study, biodiversity of Calanoida, Copepoda, during the cold and warm seasons of 2017, were observed at 12 stations belonging to four different habitats (coral reef (CR), sheltered shallow lagoons (SSL), seagrass (SG), and open deep-water (ODW) habitats) in the Hurghada shelf, north-western Red Sea. SSL habitats were the most affected by environmental conditions, especially temperature, salinity, and depth. Some calanoid species were restricted to certain habitats, others were adapted to live in more than one habitat, while some species showed a wide distribution in all habitats. ODW habitats showed maximum diversity and density of the calanoid species. The effects of temperature and salinity were distinct in the SG and SSL. The results clearly showed that different Red Sea habitats affected the biodiversity of calanoid copepods.
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Sari, Elda, Nora Idiawati, and Sukal Minsas. "COMPOSITION AND COMMUNITY STRUCTURE OF COPEPOD IN KAKAP RIVER ESTUARY, KUBU RAYA DISTRICT WEST BORNEO." BIOLOGICA SAMUDRA 3, no. 1 (June 15, 2021): 54–66. http://dx.doi.org/10.33059/jbs.v3i1.3245.

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The research of composition and community structure of copepods in Kakap river estuary, Kubu Raya District, West Borneo was conducted from October to December 2020. The purpose of this study is to determine the composition and the community structure of copepod in Kakap river estuary, Kubu Raya District, West Borneo. This study used a purposive sampling method at four stations. Copepod samples were taken using plankton net. During the research, the total number of copepods that have been identified from 4 stations are 11 species from 3 orders, 4 families and 8 genera. Copepoda that has been obtained has the composition, namly Cyclopoids 5 species, Harpacticoida 3 species, Calanoida 2 species. The copepod density in Kakap river estuary ranged from 7,9-103,3 Ind / l, the diversity index (H ') ranged from 0 to 1.9, the evenness index (E) ranged from 0 - 0,9 and the dominance index (C) ranged from 0,2 - 1. The result of copepod density correlation analysis is that negatively correlated with -1,000 current parameter and positively correlated with the DO parameter, which is 0,800. The research of composition and community structure of copepods in Kakap river estuary, Kubu Raya District, West Borneo was conducted from October to December 2020. The purpose of this study is to determine the composition and the community structure of copepod in Kakap river estuary, Kubu Raya District, West Borneo. This study used a purposive sampling method at four stations. Copepod samples were taken using plankton net. During the research, the total number of copepods that have been identified from 4 stations are 11 species from 3 orders, 4 families and 8 genera. Copepoda that has been obtained has the composition, namly Cyclopoids 5 species, Harpacticoida 3 species, Calanoida 2 species. The copepod density in Kakap river estuary ranged from 7,9-103,3 Ind / l, the diversity index (H ') ranged from 0 to 1.9, the evenness index (E) ranged from 0 - 0,9 and the dominance index (C) ranged from 0,2 - 1. The result of copepod density correlation analysis is that negatively correlated with -1,000 current parameter and positively correlated with the DO parameter, which is 0,800.
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De los Ríos-Escalante, Patricio. "Fish predation effects on body length of planktonic cladocerans and copepods in Chilean lakes." Crustaceana 88, no. 10-11 (2015): 1193–99. http://dx.doi.org/10.1163/15685403-00003472.

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The zooplankton assemblages in Chilean lakes are characterized by their markedly low species numbers and dominance of calanoid copepods. Nevertheless, the effects of zooplanktivorous fish predation on zooplankton size in these communities have not yet been studied in detail. The aim of the present study was to analyse the total length in the main groups of zooplanktonic crustaceans in Chilean lakes: Copepoda: Calanoida, and Cladocera: Daphniidae, as well as “small cladocerans” (specifically the families Bosminidae and Chydoridae). The results revealed that in the presence of fish, total body length decreased significantly for calanoid copepods, whereas for other groups that presence has no significant effect. In sites with fishes, daphniids are significantly larger in comparison with the other groups of the zooplankton community, whereas in sites without fishes calanoids are significant larger in comparison with those other groups. These results would indicate that calanoids would be the main prey for zooplanktivorous fishes in Chilean lakes. Similar results have been reported for Argentinean Patagonian lakes.
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Sumiarsa, Gede S., and Media Fitri Isma Nugraha. "KELIMPAHAN COPEPODA (ORDO: CALANOIDA) DI TELUK PEGAMETAN, BALI UTARA." Jurnal Riset Akuakultur 4, no. 1 (April 30, 2009): 55. http://dx.doi.org/10.15578/jra.4.1.2009.55-63.

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Pengamatan kelimpahan spesies copepoda, ordo Calanoida di Teluk Pegametan, Bali telah dilaksanakan pada bulan April 2007. Teluk Pegametan adalah salah satu wilayah yang potensial untuk budidaya laut yang terletak di bagian barat Laut Bali. Penelitian ini bertujuan untuk menginventarisasi spesies-spesies copepoda dari ordo Calanoida yang hidup di perairan Teluk Pegametan. Penelitian ini dilakukan pada 10 stasiun sampling dengan metode sampling secara horizontal pada permukaan laut. Plankton net berdiameter 31 cm dengan ukuran mesh 40 mm ditarik sepanjang 10 meter dengan menggunakan speed boat di sekitar stasiun pengamatan. Sampel diawetkan dengan formalin 4% untuk diidentifikasi. Dari hasil pengamatan di sepuluh stasiun terdapat 14 spesies copepoda ordo Calanoida yaitu: Acrocalanus gracilis, Calanus minor, C. sinicus, C. tenuicornis, Centropoges abdominalis, Eucalanus attenuatus, Haloptilus longicornis, Lucicutia curta, L. flavicornis, Parvocalanus crassirostris, Pseudocalanus gracilis, Rinchalanus cornutus, Scolecithricella minor, dan Temora turbinata. Spesies dominan adalah Calanus sinicus dengan proporsi 65,6% dari jumlah individu yang dijumpai.Observation on the abundance of copepod species (order: Calanoida) in Pegametan Bay has been conducted in April 2007. Pegametan Bay is located on the North West of Bali and is one of several potential areas for mariculture. The purpose of this study was to find out the abundance of copepod (Order: Calanoida) in the bay. Research sampling was conducted in 10 sampling points where planktons were collected using plankton net of 40 µm mesh size with diameter of 31 cm dragged horizontally on the sea water surface as far as 10 m each. Samples were preserved in 4% formalin for identification. There were 14 species of Calanoida copepod species found during the research: Acrocalanus gracilis, Calanus minor, C. sinicus, C. tenuicornis, Centropoges abdominalis, Eucalanus attenuatus, Haloptilus longicornis, Lucicutia curta, L. flavicornis, Parvocalanus crassirostris, Pseudocalanus gracilis, Rinchalanus cornutus, Scolecithricella minor, and Temora turbinata. Dominant species was Calanus sinicus constituting 65.8% of the total Calanoida abundance.
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Nugraha, Media Fitri Isma, and Gede Suwarthama Sumiarsa. "SPESIES ASING SEBAGAI SALAH SATU PEMBATAS DALAM BUDIDAYA COPEPODA PADA BAK TERKONTROL." Media Akuakultur 4, no. 1 (June 30, 2009): 45. http://dx.doi.org/10.15578/ma.4.1.2009.45-49.

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Copepoda adalah golongan crustacean yang dapat dijadikan sebagai pakan alami untuk larva ikan. Secara umum copepoda tergolong dalam empat ordo yaitu Calanoida, Cyclopoida, Harpacticoida, dan Monstrilidae. Di Balai Besar Riset Perikanan Budidaya Laut, Gondol, Copepoda yang dibudidayakan adalah jenis Harpacticoida yaitu Tisbe sp. yang pemeliharaannya dikerjakan dalam bak terkontrol. Copepod ini diberi pakan berupa fitoplankton, scoot’s emulsion, pelet ikan, dan ragi, serta sedikit penambahan probiotik. Pembatas selama budidaya adalah sulitnya produksi naupli copepoda secara massal, hal ini dikarenakan waktu bertelur yang tidak seragam antara individu copepoda, sehingga tidak bisa ditentukan waktu yang tepat untuk panen nauplii secara besarbesaran. Pembatas kedua adalah lambatnya reproduksi copepoda yaitu 14 hari jika dibandingkan dengan rotifer yang hanya dua hari. Pembatas ketiga adalah adanya spesies asing atau predator yang menyerang copepoda pada kondisi tertentu, seperti tingginya nutrisi pakan pada bak pemeliharaan.
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Bradford-Grieve, Janet M., Geoff A. Boxshall, Shane T. Ahyong, and Susumu Ohtsuka. "Cladistic analysis of the calanoid Copepoda." Invertebrate Systematics 24, no. 3 (2010): 291. http://dx.doi.org/10.1071/is10007.

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Calanoid copepods are extremely successful inhabitants of marine, brackish and freshwater plankton. Morphological data are used to arrive at a first, parsimony-based phylogeny for the calanoid copepods. Each family is represented by at least one exemplar, typically a recognised plesiomorphic species. The Epacteriscidae are sister to all other calanoid copepods – an observation that brings into question the concept of an Epacteriscoidea that includes the Ridgewayiidae. The monophyly of the Augaptiloidea, Centropagoidea, Clausocalanoidea and Pseudocyclopoidea is corroborated. The current analysis suggests there may be two major clades, one containing the Augaptiloidea, Centropagoidea and possibly the Pseudocyclopoidea and Ridgewayiidae and the other including the Megacalanidae, Calanidae/Paracalanidae, Bathypontioidea, Eucalanoidea, Ryocalanoidea, Spinocalanoidea and Clausocalanoidea. The relationships of the Pseudocyclopidae, Boholinidae, and Ridgewayiidae to the Centropagoidea/Augaptiloidea clade received low nodal support. Monophyly of an enlarged Bathypontioidea (including the Fosshageniidae) is proposed. A monophyletic Megacalanoidea is not retrieved. The nature of the inferred ancestral Calanoida is discussed. New evolutionary series are proposed for the female genitalia (including several losses and regaining of seminal receptacles, and independent losses of the genital operculum – once lost it is never regained) and leg 1 endopod. Paedomorphosis appears to be a dominant process in the evolution of the Calanoida.
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Jerling, H. L. "Copepoda: Calanoida; Diaptomidae; Paradiaptomidae." African Zoology 35, no. 2 (October 2000): 303–4. http://dx.doi.org/10.1080/15627020.2000.11657107.

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Dissertations / Theses on the topic "Copepoda Copepoda Calanoida"

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Mzozo, Ziyanda. "Aspects of the feeding biology of the copepod Pseudodiaptomus hessei (Copepoda: Calanoida) under culture conditions." Thesis, University of Fort Hare, 2017. http://hdl.handle.net/10353/4727.

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This study aimed to investigate the feeding behaviour of the calanoid copepod, Pseudodiaptomus hessei, particularly whether it prefers to feed on a planktonic or benthic food source. The effect of different microalgae species on the feeding preference, ingestion, and gut evacuation rate were investigated. Two microalgae species (Isochrysis galbana and Tetraselmis suecica) were used, to test gut fullness and gut evacuation of P. hessei. The copepods were starved for 6 h and allowed to feed on monalgae diets, I .galbana and T. suecica, and a 1:1 binary diet mixture of T. suecica and I. galbana. The gut fullness and gut evacuation rates were determined by observing under the dissecting microscope and gut content percentage was recorded (as 0, 25, 50, 75 or 100 percent) along with copepod sex. Copepods that feed on T. suecica fill their gut after 30 min, while those that feed on I. galbana do so after 40 min. There was a significant difference (p= 0.02) between sexes with males filling their gut faster than females. However, copepods that fed on I. galbana evacuated their gut content completely after 30 min, while those fed on T suecica evacuated theirs after 40 min. There was no difference between males and females for gut evacuation. Even though there was high gut fullness rate when P. hessei was feeding on T. suecica, I. galbana is recommended as the best mono-algae diet to culture P. hessei. The feeding behaviour of P. hessei was investigated, as to whether it prefers to feed on a planktonic or benthic food source. Copepods were starved for 3 h and then allowed to feed on two microalgae species (I. galbana and T. suecica), one presented as a benthic and other as planktonic. Controls included swapping the modes of presentation for each algae species. Ingested microalgae species were quantified using real-time PCR, with threshold cycles interpreted as relative abundance ratio (planktonic microalgae divided by benthic microalgae species). Pseudodiaptomus hessei preferred to feed on planktonic food sources initially as there was a difference between planktonic and benthic ingested food (p=0.026). Copepods shifted from planktonic to benthic food sources after 80 min of feeding planktonically. Planktonic food sources were the preferred choice for P. hessei regardless of microalgae species offered. The results from this study also confirm that P. hessei feed on a benthic food source during the day under culture conditions. This information can be used as baseline information for aquaculturists to rear the species as live feed for marine fish larvae.
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Chen, Gang. "Cryptic diversity, ecological differentiation and population genetics of an estuarine copepod, (Acartia tonsa) dana 1849 (Copepoda: Calanoida)." College Park, Md.: University of Maryland, 2009. http://hdl.handle.net/1903/9495.

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Thesis (Ph. D.) -- University of Maryland, College Park, 2009.
Thesis research directed by: Behavior, Ecology Evolution and Systematics Program. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.
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Lindeque, Penelope Kate. "A molecular approach to Calanus (Copepoda: Calanoida) development and systematics." Thesis, University of Plymouth, 2000. http://hdl.handle.net/10026.1/2641.

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Production and recruitment measurements in marine copepods of the genus Calanus have been addressed via the study of genes involved in early embryogenesis. The first sequence from a Calanus helgolandicus (C. helgolandicus) developmental gene (Cal-Antp) has been cloned by screening a C. helgolandicus genomic library with a homologous Calanus homeobox probe. Sequencing of an isolated and sub-cloned fragment of this gene, plus further analysis by Inverse Polymerase Chain Reaction (IVPCR), has shown it to be homologous with other Antennapedia homeobox genes. The temporal expression of Cal-Antp was analysed through its messenger RNA (mRNA) complement by Reverse Transcription Polymerase Chain Reaction (RT-PCR). The gene was expressed in tissue taken from eggs over 18 hours old, and in nauplii and copepodite stages, but no expression was detected in eggs less than 18 hours old or adult tissue. Three further homeobox-containing genes have been identified and analysed through their expression in C. helgolandicus eggs. Two of these are caudal homologues, and the third is homologous to the Antennapedia class of genes. The C. helgolandicus developmental gene sequence data provides a means of developing probes to monitor the temporal expression of such genes and their responses to environmental influence. The applicability of such probes to the investigation of key production and recruitment processes, including egg viability measurement, is discussed. A relatively simple and cost effective method has been developed to identify the four Calanus species common to the North Atlantic. This system involves the PCR amplification of a region of the mitochondrial rRNA gene without prior purification of the DNA, followed by Restriction Fragment Length Polymorphism (RFLP) analysis of the amplified product. The versatility of the method is demonstrated by the unambiguous identification to species of any life stage, from egg to adult, and of any individual body parts. The molecular identification technique has for the first time shown the unexpected presence of three different Calanus species in Lurefjorden, Norway and has proved to be consistently accurate for all individuals tested including geographically distinct conspecific populations.
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Okumura, Denise Tieme. "Estudos ecotoxicológicos com as espécies Argyrodiaptomus furcatus e Notodiaptomus iheringi (Copepoda, Calanoida)." Universidade de São Paulo, 2011. http://www.teses.usp.br/teses/disponiveis/18/18139/tde-15032011-140613/.

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Os Copepoda constituem a maior classe de pequenos crustáceos, com mais de 8.500 espécies descritas. Dentre as cinco ordens de Copepoda de vida livre, as espécies pertencentes à ordem Calanoida apresentam um forte endemismo, com uma restrita distribuição geográfica. Além disso, os Copepoda Calanoida são particularmente sensíveis a contaminantes contidos na coluna de água devido ao seu hábito planctônico. No presente trabalho foram realizados estudos ecotoxicológicos com duas espécies de Copepoda Calanoida, particularmente com as espécies Argyrodiaptomus furcatus Sars, 1901 e Notodiaptomus iheringi Wright, 1935. Estas espécies foram comparadas com relação à sensibilidade e desempenho como organismos-teste na avaliação da qualidade da água em ecossistemas de água doce. Foram testadas e adaptadas metodologias de cultivo em laboratório, e foram estudados os principais aspectos da biologia destes em condições ambientais controladas. Além disso, foram analisados aspectos referentes à dinâmica populacional. A sensibilidade das duas espécies de Calanoida às substâncias de referência sódio, potássio e zinco na forma de cloreto (\'NA\'CL\', \'K\'CL\' e \'ZN\'CL IND.2\', respectivamente), ao dicromato de potássio (\'K IND.2\'CR IND.2\'O IND.7\') e ao sulfato de alumínio (\'AL IND.2\'(\'SO IND.4\')IND.3\'), aos surfactantes dodecilsulfato de sódio (\'C IND.12\'H IND.25\'NA\'O IND.4\'S\') e ácido dodecil benzenosulfonato de sódio (\'CH IND.3\'(\'CH IND.2\')IND.11\'C IND.6\'H IND.4\'S\'O IND.3\'NA\'), foram avaliadas. Além disso, avaliou-se a toxicidade aguda de diferentes amostras ambientais e das toxinas da cianobactéria Microcystis aeruginosa após tratamento por irradiação. Os resultados dos testes ecotoxicológicos foram expressos em concentração efetiva (CE(I)50). Para o cálculo estatístico da CE50 foi utilizado o programa Trimmed Spearman-Karber. Os resultados relativos ao ciclo de vida mostraram que N. iheringi tem um menor tempo de desenvolvimento do que A. furcatus, com tempos de duração do desenvolvimento do ovo determinados pelos métodos indireto e direto. Verificou-se que a espécie de N. iheringi, de menor tamanho, apresentou tempo de desenvolvimento pós-embrionário menor do que a espécie de maior tamanho, A. furcatus. As taxas intrínsecas de crescimento populacional foram mais elevadas para a espécie A. furcatus do que para N. iheringi. Pelos resultados obtidos observou-se que N. iheringi além de atingir tamanhos menores, possui um desenvolvimento mais rápido e ciclo de vida mais curto. Em relação à sensibilidade destes Copepoda Calanoida às substâncias tóxicas observou-se que em relação aos sais, estas duas espécies foram mais sensíveis ao cloreto de potássio (\'K\'CL\'). Em relação aos metais, o grau de toxicidade aos Copepoda decresceu na sequência zinco > cromo > alumínio. Já com em relação aos surfactantes, a espécie N. iheringi foi mais sensível do que A. furcatus, e a toxicidade diminui à medida que o estágio de desenvolvimento dos indivíduos se torna mais avançado. Os náuplios são mais sensíveis à maioria das substâncias de referência testadas (sais, surfactantes, cromo e zinco) do que os estágios de desenvolvimento mais avançados. A espécie N. iheringi é mais sensível aos diversos agentes tóxicos do que a espécie A. furcatus, no entanto, N. iheringi foi mais resistente às cianotoxinas do que A. furcatus. Os resultados apresentados corroboram a idéia de que os calanoides A. furcatus e N. iheringi apresentam elevada sensibilidade a uma variedade de substâncias tóxicas de referência, o que torna viável sua utilização como organismos-teste em ensaios ecotoxicológicos. Estes estudos podem proporcionar maior entendimento sobre a estrutura das comunidades aquáticas e das alterações na dinâmica das populações, no sentido de se poder verificar como as espécies respondem às alterações na qualidade da água e o porquê das modificações na estrutura das comunidades, permitindo, dessa forma, ações de manejo e de conservação visando a preservação da biodiversidade das águas doces.
Copepods constitute the largest class of small crustaceans, with more than 8,500 described species. Among the five orders of free-living copepods, the species belonging to the order Calanoida show strong endemism, with a restricted geographic distribution. Additionally, they are particularly sensitive to contaminants in the water column due to their planktonic habit. In the present study ecotoxicological studies with two species of Calanoida copepods were performed, particularly with the species Argyrodiaptomus furcatus Sars, 1901 and Notodiaptomus iheringi Wright, 1935. These species were compared for sensitivity and performance as test organisms in assessing water quality in freshwater ecosystems. Methods of cultivation in the laboratory were tested and adapted, and the main aspects of these species biology were studied under controlled temperature and photoperiod. In addition, aspects related to population dynamics were also analyzed. The sensitivity of the calanoids to a number of reference substances as: sodium, potassium and zinc in the form of chlorides (\'NA\'CL\', \'K\'CL\' and \'ZN\'CL IND.2\', respectively), potassium dichromate (\'K IND.2\'CR IND.2\'O IND.7\') and aluminum sulfate (\'AL IND.2\'(\'SO IND.4\')IND.3\'), and to the surfactant sodium dodecyl sulfate (\'C IND.12\'H IND.25\'NA\'O IND.4\'S\') and sodium dodecyl benzenesulphonate (\'CH IND.3\'(\'CH IND.2\')IND.11\'C IND.6\'H IND.4\'SO IND.3\'NA\') were evaluated. Also the toxicity of environmental samples and of the cyanobacteria Microcystis aeruginosa toxin after irradiation treatment was tested. The results of ecotoxicity tests were expressed as effective concentrations (EC(I)50). The statistical calculation of the EC50 was carried out by the Trimmed Spearman-Karber program. The results regarding the copepods life cycle showed that N. iheringi has a shorter development time and duration of egg development, by both indirect and direct methods, than A. furcatus. It was found that small sized N. iheringi, had a post-embryonic development faster than the larger species, A. furcatus. The intrinsic rates of population increase were higher for the species A. furcatus than for N. iheringi. The results indicated that N. iheringi besides reaching smaller sizes, has a faster development and shorter life cycle. Regarding the sensitivity of these two species to toxic substances it was observed that in relation to the salts the calanoids were more sensitive to the potassium chloride (\'K\'CL\'). Compared to metals, toxicity to copepods followed the sequence zinc> chromium> aluminum. However, regarding surfactants the species N. iheringi was more sensitive than A. furcatus, and toxicity decreased with the advance in developmental stages. The nauplii were more sensitive to most of the reference substances tested (salts, surfactants, chromium and zinc) than the more advanced developmental stages. The species N. iheringi was more sensitive to various toxic agents than A. furcatus, but N. iheringi was more resistant to the cyanotoxins than A. furcatus. The results support the hypothesis that the calanoid copepods A. furcatus and N. iheringi have high sensitivity to a variety of toxic reference substances, what makes them feasible to be used as test organisms in ecotoxicological tests. The study performed may provide further understanding about the structure of aquatic communities and changes in population dynamics, contributing for the understanding of how species respond to changes in water quality by changes in community structure, subsidizing management actions aiming the conservation of freshwater biodiversity.
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Salveson, Erik. "Effects of copepod density and water exchange on the egg production of Acartia tonsa Dana (Copepoda: Calanoida) feeding on Rhodomonas baltica." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for biologi, 2013. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-21425.

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In this study, the objective was to investigate the effect of different copepod densities and the water exchange rate day-1 on the egg production of <i>Acartia tonsa</i> feeding on <i>Rhodomonas baltica</i>. It was a main task to find the best conditions for a maximum egg production in a large scale production system. The egg production under 3 different copepod densities (5, 8-10 and 20-53 ind/ml) and with water exchange rates of 100 and 500 % day-1 were tested. In addition, other variables like ammonia, temperature (20 °C), pH (8), salinity (24-34 ‰), dissolved 02 (> 5 mg/L) were measured and controlled if possible. Hatching success, female ratio, eggs per female and different consumption tests were measured.
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Pereira, Ricardo Henrique Gentil. "Análise da distribuição, densidade e diversidade de Copepoda Calanoida e Cyclopoida nos reservatórios e tributários do Médio e Baixo Rio Tietê e sua relação com as características limnológicas do sistema." Universidade de São Paulo, 2003. http://www.teses.usp.br/teses/disponiveis/18/18139/tde-21112016-163429/.

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Este projeto de pesquisa foi desenvolvido nos reservatórios e tributários do Médio e Baixo rio Tietê, São Paulo, com o objetivo de avaliar a composição, distribuição e densidade das espécies de Copepoda Calanoida e Cyclopoida e sua relação com a disposição dos reservatórios construídos em série (cascata), os quais apresentam diferenças na morfometria, período e área de inundação, grau de trofia (relacionando aos usos e ocupação da bacia hidrográfica), vazão e tempo de residência da água. Para tanto, foram realizadas coletas nos reservatórios e tributários nos meses de fevereiro, maio, julho e outubro/2000, quantificando as principais variáveis físicas, químicas e biológicas, além da análise qualitativa e quantitativa do zooplâncton, com ênfase em Copepoda Calanoida e Cyclopoida. Os resultados demonstram que apesar de ser verificada a melhoria da qualidade da água nos reservatórios a jusante, ainda ocorrem contribuições pontuais via tributários e difusas pelas atividades desenvolvidas na bacia hidrográfica, aumentando a concentração das formas nitrogenadas e fosfatadas, influenciando diretamente nas condições tróficas dos reservatórios e, conseqüentemente, na composição, densidade e distribuição das populações planctônicas. Os reservatórios classificam-se como eutróficos ou mesotróficos (dependendo da sua localização no rio Tietê e da sazonalidade) e os rios como eutróficos, principalmente em decorrência das elevadas concentrações de fósforo e clorofila.Em relação à comunidade zooplanctônica, os Copepoda e Rotifera foram mais abundantes, com uma variação espacial e sazonal relacionada às condições tróficas e temperatura, bem como aos mecanismos diferenciados do controle operacional das barragens (vazão e tempo de residência da água). As espécies de Copepoda encontradas no sistema foram Notodiaptomus iheringi, Notodiaptomus evaldus, Notodiaptomus deitersi, Argyrodiaptomus azevedoi Thermocyclops decipiens, ) Thermocyclops minutus, Thermocyclops inversus, Mesocyclops longisetus, Mesocyclops brasilianus, Mesocyclops meridianus, Mesocyclops ogunus, Acanthocyclops ogunus e Paracyclops chiltoni, sendo N. iheringi, N. evaldus, T. decipiens e T. minutus as espécies dominantes, com diferenças na distribuição e abundância em função dos locais de amostragem (tributários ou reservatórios) e período de coleta (sazonalidade).
This research project was developed in Tietê River reservoirs and tributaries, São Paulo, Brazil, aiming to evaluate the composition, distribution and density of Copepoda Calanoida and Cyclopoida species and its relationship with reservoirs disposition in Tietê River, built in series (cascade), which present differences in morphometry, flood period and area, trophic level (related to the hydrographic basin uses and occupation), discharge and water residence time. For that, collections were accomplished in reservoirs and tributaries on February, May, July and October/2000, quantifying the main physical, chemical and biological variables, besides qualitative and quantitative zooplankton analysis, with emphasis in Copepoda Calanoida and Cyclopoida. Results demonstrate that, in spite of the improvement of water quality verified downstream reservoirs, it still happen punctual tributary contributions, diffused due to activities developed in the hydrographic basin, increasing nitrogenous and phosphate forms concentration, influencing directly the reservoir trophic conditions and, consequently, composition of species, density and distribution. Reservoirs are classified as eutrophic or mesotrophic (depending on its location in Tietê River and sazonality) and the rivers as eutrophic, due mainly to the high phosphorus and chlorophyll concentrations. In relation to the zooplankton community, Copepoda and Rotifera were the most abundant, with spacial and seasonal variationrelated to trophic conditions and temperature, as well as to the barrier differentiated operational control mechanisms (discharge and water residence time). The Copepoda species found in the system were Notodiaptomus iheringi, Notodiaptomus evaldus, Notodiaptomus deitersi, Argyrodiaptomus azevedoi, Thermocyclops decipiens, Thermocyclops minutus, Thermocyclops inversus, Mesocyclops longisetus, Mesocyclops brasilianus, Mesocyclops meridianus, Mesocyclops ogunus, Acanthocyclops ogunus and Paracyclops chiltoni; being N. iheringi, N. evaldus, T. decipiens and T. minutus the dominant species, with differences in the distribution and abundance in function of the sampling places (tributaries or reservoirs) and collection period (sazonality).
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Geraldes, Primeiro Luis José de Oliveira. "História natural de Notodiaptomus amazonicus (Wright, 1935) em lago de área urbana protegida no lavrado de Roraima (Copepoda: Calanoida: Diaptomidae)." Instituto Nacional de Pesquisas da Amazônia, 2016. http://bdtd.inpa.gov.br/handle/tede/2265.

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Instituto de Amparo a Ciência, Tecnologia e Inovação de Roraima - IACTI-RR
The study addresses to the copepods natural history of an urban lake in a protected municipal area in the lavrado of Roraima, whose lake has the characteristic of being the unique remnant of urban lakes in Boa Vista. The lake has a round format, measuring near 60 meters in diameter. The research was related to the population structure of the copepodes of the lake. The samples were taken in six visits during December 2014, the dry period of the region, covering three microhabitats: margin with vegetation of gramineans and cyperaceans, limnetical portion and margin with absent vegetation. Each visit corresponded to a sample in one microhabitat – in all 6 samples per microhabitat. These samples also encompassed three phases of the lake – full waters, empting and critical levels of the water. Four questions guided the study concerning the proportions of adults (male and female), copepodits (juveniles) and náuplius (larvae) inside and between the microhabitats. Each question had its respective hypothesis, considered the provisory answer to the question, which results allowed some inferences on the dynamics of the studied copepod population. The main results related to these four questions were: First – i) the proportion of adults and copepodits were greater than the náuplius in the thre microhabitats, ii) the proportion of náuplius, copepodits and adults were greater in the limnetical portion, iii) the proportion of adults was fewer in the margins with vegetation. Second – i) the sexual ratio was 1:1 among the three microhabitats, ii) inside the three microhabitats the proportion between males and females was also 1:1. Third – in the three microhabitats the proportion of females carrying eggs was slightly greater when the lake was full or empting, ii) female carrying eggs was equally distributed in the three microhabitats when the lake was full, iii) the proportion of females carrying eggs was greater in the center and in the margin without vegetation when the lake was in its critical water level. Fourth – i) among the three phases of the lake – full, emptying and critical levels of the water – the copepodits and males and females adults were more abundant than náuplius, ii) the proportion of náuplius was homogenous and more abundant in the high levels of water (full and emptying), less abundant in the critical levels of water, iii) the copepodits were more abundant when the lake was emptying, but homogenous in the extreme phases– full and critical levels, iv) adult males and females had its abundance reduced at the same proportion as the water was decreasing in a sequence of full water, empting and critical levels of water.
O estudo aborda a história natural dos copépodes presentes em um lago urbano situado em área municipal protegida no lavrado de Roraima que tem como característica ser o único remanescente dos lagos das áreas urbanas de Boa Vista. O lago tem formato arredondado, medindo aproximadamente 60 metros de diâmetro. A pesquisa foi relacionada à estrutura populacional dos copépodes do lago. As amostragens foram feitas em seis visitas durante dezembro de 2014 e Janeiro de 2015, época de estiagem na região, abrangendo três microhabitat do lago: margem com vegetação de gramíneas e ciperáceas, porção limnética e margem oposta sem vegetação. Cada visita correspondeu a uma amostragem em um microhabitat – ao todo foram 6 amostragens por microhábitat. Estas amostragens abrangeram também três fases do lago – cheia, período intermediário (entre cheia e seca) e seca (níveis críticos de água). Foram quatro perguntas norteadoras do estudo abrangendo as proporções de adultos (machos e fêmeas), copepoditos (os jovens) e náuplius (larvas) dentro e entre os microhabitat. Para cada pergunta foi formulada a respectiva hipótese, considerada resposta provisória à pergunta, cujos resultados permitiram algumas inferências sobre a dinâmica da população estudada dos copépodes. Os principais resultados relacionados a estas quatro perguntas foram: Primeira – i) as proporções de adultos e copepoditos foram maiores do que a dos náuplius nos três microhabitat, ii) as proporções de náuplius, copepoditos e adultos foram maiores na porção limnética, iii) a proporção de adultos foi menor na margem com vegetação. Segunda – i) a razão sexual foi 1:1 entre os três microhabitat, ii) dentro dos três microhábitats a proporção entre machos e fêmeas apresentaram distorção na razão sexual, sendo homogênea na margem sem vegetação e apresentando distorção sexual na zona limnética e margem com vegetação, sempre com fêmeas predominando. Terceira – i) nos três microhabitat a proporção de fêmeas com ovos foi ligeiramente maior quando o lago estava cheio, ii) fêmeas com ovos distribuíram-se igualmente nos três microhabitat quando o lago estava cheio e durante o seu período de redução espacial (intermediária entre a cheia e seca), iii) a proporção de fêmeas com ovos foi maior no centro quando o lago está com menos água, iv) as proporções de fêmeas com ovos foi maior no centro e na margem sem vegetação quando o lago está com nível crítico de água. Quarta – i) entre as três fases do lago – cheia, intermediária e seca, os copepoditos (jovens) e os adultos foram mais abundantes do que os náuplius, ii) as proporções de náuplius foram homogêneas nas fases altas de água (cheia e período intermediário) e menor nos níveis críticos de água, iii) os copepoditos foram mais abundantes na fase intermediária do lago e homogêneos nas fases extremas – cheia e seca, iv) os machos e fêmeas adultos tiveram abundância reduzida na mesma proporção que a redução de água do lago na sequência cheio, período intermediário e seco (nível crítico de água).
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8

Kiley, Ann L. "Chromosome number and phylogenetic relationships in selected species of North American diaptomus (Copepoda, Calanoida)." Virtual Press, 1985. http://liblink.bsu.edu/uhtbin/catkey/415661.

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The chromosome numbers of the eight following species of freshwater diaptomid copepods were examined to elucidate relationships between species: Aglaodiaptomus clavipes, A. leptoups, Leptodiaptomus ashlandi, A. minutus, A. sicilis, A. siciloides, Skistodiaptomus oregonensis, and S. pallidus. The specimens evaluates were collected from various lakes in Wisconsin including Lake Michigan. Squash mounts were prepared from female individuals for microscopic evaluation. Comparisons of chromosome numbers and chromosome morphology indicated that the species considered are not as closely related as might be suspected based on external morphological considerations. The chromosome numbers varied greatly between species and no consistant numbers within subgenera were observed, substantiating the idea that the species are clearly well separated phylogenetically. A technique for preparing chromosome squash mounts from formalin preserved specimens in presented.Ball State UniversityMuncie, IN 47306
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Bostock, Jessica L. "A Comparison of Copepoda (Order: Calanoida, Cyclopoida, Poecilostomatoida) Density in the Florida Current Off Fort Lauderdale, Florida." NSUWorks, 2010. http://nsuworks.nova.edu/occ_stuetd/92.

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Copepods, minute crustaceans, are vital constituents of marine food web dynamics in tropical ecosystems. Ecologically, copepods provide the link between primary production and tertiary consumers. Changes in population structure and densities may impact ecosystem stability and production on small to large spatial scales. The present study examined the influence of the Florida Current on copepod population densities off the coast of Fort Lauderdale, Florida due to limited data in the area. Samples were collected during February and July 2007 at two locations, Stations A and B. Station A, dependent on current dynamics, fluctuated between the most western boundary and the inshore waters adjacent to the coast. Station B was typically located within the Florida Current showing great influence from the current’s physical factors. The current, acted as a physical barrier, entrapping species at near shore stations, increasing population densities by increased nutrient loads through upwelling and land runoff. The movement of the current inshore showed a greater resurgence of oceanic species at each station. However, the western edge of the current, acting as a barrier, yielded the lowest population densities overall and among all copepod orders. The decrease can influence food web dynamics and the prey availability to higher tertiary consumers. Population dynamics were ascertained by relative copepod densities identified to the lowest possible taxa and enumerated. Calanoid copepods were dominant in zooplankton samples, showing high instances of Calanus and Undinula, followed by Poecilostomatoida, highly represented by Corycaeus and Oncaea, and Cyclopoida. Poecilostomatoid densities were numerically important, where in some samples Corycaeus contributed to 42 % of overall copepod densities. Previous studies have led to their underestimation, due to gear selectivity and extrusion directly related to their prosome length. Diversity levels revealed an overall diverse habitat, typical of tropical environments. However, there was greater diversity in coastal waters as compared to the Florida Current which was only found oceanic species present.
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Tietjen, Aspasia Berenike Sophia [Verfasser], and Myron A. [Akademischer Betreuer] Peck. "Linking environmental factors and the reproductive success of Acartia tonsa DANA (Copepoda: Calanoida) / Aspasia Berenike Sophia Tietjen. Betreuer: Myron A. Peck." Hamburg : Staats- und Universitätsbibliothek Hamburg, 2013. http://d-nb.info/1038789893/34.

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Books on the topic "Copepoda Copepoda Calanoida"

1

Mauchline, John. The biology of calanoid copepods. London: Academic, 1998.

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Bradford-Grieve, J. M. The marine fauna of New Zealand: Pelagic calanoid Copepoda : Bathypontiidae, Arietellidae, Augaptilidae, Heterorhabdidae, Lucicutiidae, Metridinidae, Phyllopodidae, Centropagidae, Pseudodiaptomidae, Temoridae, Candaciidae, Pontellidae, Sulcanidae, Acartiidae, Tortanidae. Wellington: National Institute of Water and Atmospheric Research (NIWA), 1999.

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Reddy, Y. Ranga. Copepoda, Calanoida, Diaptomidae: Key to the genera Heliodiaptomus, Allodiaptomus, Neodiaptomus, Phyllodiaptomus, Eodiaptomus, Arctodiaptomus and Sinodiaptomus. The Hague: SPB Academic Publishing, 1994.

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The non-marine Centropagidae (Copepoda: Calanoida) of the world. The Hague: SPB Academic Publishing, 1992.

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Hassett, R. Patrick. Seasonal, vertical, and horizontal distribution of four species of copepods around Oahu, Hawaii: Data report. [La Jolla, Calif.]: U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, National Marine Fisheries Service, [Southwest Fisheries Science Center, 1995.

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Bradford, J. M. The marine fauna of New Zealand: Pelagic Calanoid Copepods : families Euchaetidae, Phaennidae, Scolecithricidae, Diaixidae, and Tharybidae. [Wellington, N.Z.]: National Institute of Water and Atmospheric Research, 1994.

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Bradford, J. M. The marine fauna of New Zealand. [Wellington]: NIWA (National Institute of Water and Atmospheric Research), 1994.

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Fischer, Lutz. Die Einfluss der Grossen Meteorbank auf die Ernährungsbiologie und Verteilung dominanter Calanoida (Crustacea, Copepoda): The impact of the Great Meteor Seamount on the feeding biology and the distribution of dominant Calanoida (Crustacea, Copepoda). Bremerhaven: Alfred-Wegener-Institut für Polar- und Meeresforschung, 2005.

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Rayner, Nancy A. Copepoda, Calanoida: Diaptomidae, Paradiaptominae : illustrated keys to the genera and species of Paradiaptomus, Lovenula, Neolovenula and Metadiaptomus. Leiden, The Netherlands: Backhuys, 1999.

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Mauchline, J. The biology of calanoid copepods. San Diego: Academic Press, 1998.

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Book chapters on the topic "Copepoda Copepoda Calanoida"

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Björnberg, Tagea K. S., and Antonio Frederico Campaner. "On Gaussia Wolfenden (Copepoda, Calanoida, Metridinidae)." In Biology of Copepods, 351–56. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-3103-9_36.

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Dumont, Henri J., and Sibylle Maas. "On nine Tropodiaptomus-species (Copepoda, Calanoida) from equatorial East Africa." In Biology of Copepods, 415–27. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-3103-9_46.

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Arashkevich, E. G., A. V. Drits, and A. G. Timonin. "Diapause in the life cycle of Calanoides carinatus (Kroyer), (Copepoda, Calanoida)." In Diapause in the Crustacea, 197–208. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-1667-8_22.

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Park, Taisoo. "Geographic distribution of the bathypelagic genus paraeuchaeta (Copepoda, Calanoida)." In Ecology and Morphology of Copepods, 317–32. Dordrecht: Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-017-1347-4_42.

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Belmonte, G., and D. Potenza. "Biogeography of the family Acartiidae (Calanoida) in the Ponto-Mediterranean Province." In Copepoda: Developments in Ecology, Biology and Systematics, 171–76. Dordrecht: Springer Netherlands, 2001. http://dx.doi.org/10.1007/0-306-47537-5_15.

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Uye, Shin-ichi. "Temperature-dependent development and growth of Calanus sinicus (Copepoda: Calanoida) in the laboratory." In Biology of Copepods, 285–93. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-3103-9_28.

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Rayner, N. A., and J. Heeg. "Distribution patterns of the Diaptomidae (Calanoida: Copepoda) in southern Africa." In Studies on the Ecology of Tropical Zooplankton, 47–75. Dordrecht: Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-011-0884-3_5.

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Jothiraj, K., and P. Santhanam. "Optimisation of the Culture Conditions of Nannocalanus minor (Copepoda: Calanoida)." In Basic and Applied Zooplankton Biology, 225–46. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-7953-5_8.

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Hart, Rob C. "Two calanoids, two lakes, and a decade or two. An updated record and evaluation of occurrence and periodicity of Tropodiaptomus spectabilis and Metadiaptomus meridianus (Copepoda: Calanoida), and alternative stable states in two cascading impoundments." In Copepoda: Developments in Ecology, Biology and Systematics, 269–83. Dordrecht: Springer Netherlands, 2001. http://dx.doi.org/10.1007/0-306-47537-5_22.

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Cicchino, Graciela. "Importance of the genital operculum in the taxonomy of South American Diaptomidae (Copepoda, Calanoida)." In Ecology and Morphology of Copepods, 143–47. Dordrecht: Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-017-1347-4_19.

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Conference papers on the topic "Copepoda Copepoda Calanoida"

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Oliveira, P. M., G. R. S. Ferreira, and P. M. Mitsuka. "DIVERSIDADE DE COPEPODA (CALANOIDA E CYCLOPOIDA) EM TANQUE DE AROEIRAS - CAETITÉ, BAHIA." In X Congresso Brasileiro sobre Crustáceos. Sociedade Brasileira de Carcinologia, 2018. http://dx.doi.org/10.21826/2178-7581x2018105.

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Geraldes-Primeiro, L. J. O., E. N. Santos-Silva, C. M. Carvalho, R. E. S. Faria, F. R. S. Silva, R. G. Nascimento, R. C. Mendes, and L. R. B. Cruz. "ESTRUTURA POPULACIONAL DE NOTODIAPTOMUS AMAZONICUS (COPEPODA: CALANOIDA) EM UM LAGO AMAZÔNICO URBANO NO LAVRADO DE RORAIMA." In X Congresso Brasileiro sobre Crustáceos. Sociedade Brasileira de Carcinologia, 2018. http://dx.doi.org/10.21826/2178-7581x2018017.

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Talapatra, Siddharth, Jiarong Hong, Jian Sheng, Becky Waggett, Pat Tester, and Joseph Katz. "A Study of Grazing Behavior of Copepods Using Digital Holographic Cinematography." In ASME 2008 Fluids Engineering Division Summer Meeting collocated with the Heat Transfer, Energy Sustainability, and 3rd Energy Nanotechnology Conferences. ASMEDC, 2008. http://dx.doi.org/10.1115/fedsm2008-55196.

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Generating proper feeding currents for entraining prey is one of the important features in the grazing behavior of (∼1mm) copepods. These feeding currents vary with the copepod species, as well as with the species or strains and concentration of prey (∼10 μm) dinoflagellates. Calanoid copepods also hover for a while, while slowly sinking, and then intermittently jump to a different location. In our study, we employed high speed digital holographic cinematography to measure elements of the flow field around copepods in an environment seeded with dinoflagellates. In most cases, the flow field and feeding currents were characterized based on the trajectories of the dinoflagellates. However, in some of the tests we also added neutrally buoyant 20 μm particles as independent flow tracers. At low magnifications, we simultaneously recorded two perpendicular views to obtain the same spatial resolution in all directions. Data were recorded at varying magnifications and frame rates. In recent experiments, we exposed the copepods to different strains of the same dinoflagellate species that have varying levels of toxicity, and measured the resulting changes to the grazing behavior of the copepods. Here we present results from two of these experimental setups: Acartia tonsa with Karlodinium veneficum (non toxic strain) and Acartia tonsa in particle seeded flow. Issues such as swimming characteristics, feeding classification (raptorial vs. filter feeding approaches) and copepod response to different environmental settings were addressed.
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Hamza, Waleed, Muzna Al Junaibi, Sergey Piontkovski, and Khaled Al Hashmi. "COMPARATIVE PLANKTON DYNAMICS IN ARABIAN GULF AND SEA OF OMAN AT OPPOSITE SIDES OF THE STRAIT OF HORMUZ." In GEOLINKS International Conference. SAIMA Consult Ltd, 2020. http://dx.doi.org/10.32008/geolinks2020/b2/v2/01.

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Phytoplankton and zooplankton monthly samples collected from the coastal water stations, located in Ras Al Khaima Emirate (United Arab Emirates) and Sohar governorate (Sultanate of Oman), during 2018-2019, have shown great variations, not only in their community structures, but also in their species abundances. Plankton samples were collected via vertical hauls from 6 m depth to the surface at Ras Al Khaima, while in Sohar, samples were collected from 20 m depth to the surface. The sample analyses revealed the dominance of diatoms during the warmer months at both sample sites, with an increase of dinoflagellates during the colder months, especially at Sohar. The abundances of certain species at each site, could not be explained by the grazing of zooplankton (dominated by calanoid copepods) on species-specific populations of phytoplankton, nor by seasonal temperature variations. The hydrological regime at the Strait of Hormuz, separating the two sample sites, as well as the differences in morphometric features and other environmental parameters, could account for the ecological differentiation in planktonic successions at both locations.
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Reports on the topic "Copepoda Copepoda Calanoida"

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Paffenhoefer, G. A., K. D. Lewis, M. H. Bundy, and C. Metz. Rates of ingestion and their variability between individual calanoid copepods: Direct observations. Office of Scientific and Technical Information (OSTI), December 1995. http://dx.doi.org/10.2172/161058.

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Rabalais, Lauren, Jennifer Laird, Alan Kennedy, John Farrar, Guilherme Lotufo, and James Biedenbach. Acute Toxicity Testing and Culture Methods for Calanoid Copepods in Water Column (Elutriate) Toxicity Evaluations. Environmental Laboratory (U.S.), July 2018. http://dx.doi.org/10.21079/11681/27968.

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