Relevant bibliographies by topics / Copepods

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Academic literature on the topic 'Copepods'

Author: Grafiati
Published: 4 June 2021
Last updated: 15 June 2025

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Journal articles on the topic "Copepods"

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Piasecki, Wojciech, Balu Alagar Venmathi Maran, and Susumu Ohtsuka. "Are We Ready to Get Rid of the Terms “Chalimus” and ”Preadult” in the Caligid (Crustacea: Copepoda: Caligidae) Life Cycle Nomenclature?" Pathogens 12, no. 3 (2023): 460. http://dx.doi.org/10.3390/pathogens12030460.

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In view of recent studies, we suggest that the term “preadult” should not be used in scientific reports on Copepoda parasitic on fishes as having no explicit meaning or further justification. Consequently, the term “chalimus” with its use currently restricted in the Caligidae to at most two instars in the life cycles of species of Lepeophtheirus, also becomes redundant. In our new understanding, both the chalimus and preadult stages should be referred to as the respective copepodid stages (II through V, in integrative terminology). The terminology for the caligid copepod life cycle thereby becomes consistent with that for the homologous stages of other podoplean copepods. We see no justification for keeping “chalimus” and “preadult” even as purely practical terms. To justify this reinterpretation, we comprehensively summarize and reinterpret the patterns of instar succession reported in previous studies on the ontogeny of caligid copepods, with special attention to the frontal filament. Key concepts are illustrated in diagrams. We conclude that, using the new integrative terminology, copepods of the family Caligidae have the following stages in their life cycles: nauplius I, nauplius II (both free-living), copepodid I (infective), copepodid II (chalimus 1), copepodid III (chalimus 2), copepodid IV (chalimus 3/preadult 1), copepodid V (chalimus 4/preadult 2), and adult (parasitic). With this admittedly polemical paper, we hope to spark a discussion about this terminological problem.
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Barth-Jensen, Coralie, Malin Daase, M. R. Ormańczyk, Øystein Varpe, Sławomir Kwaśniewski, and Camilla Svensen. "High abundances of small copepods early developmental stages and nauplii strengthen the perception of a non-dormant Arctic winter." Polar Biology 45, no. 4 (2022): 675–90. http://dx.doi.org/10.1007/s00300-022-03025-4.

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AbstractThe traditional view is that the Arctic polar night is a quiescent period for marine life, but recent reports of high levels of feeding and reproduction in both pelagic and benthic taxa have challenged this. We examined the zooplankton community present in Svalbard fjords, coastal waters, and the shelf break north of Svalbard, during the polar night. We focused on the population structure of abundant copepods (Calanus finmarchicus, Calanus glacialis, Metridia longa, Oithona similis, Pseudocalanus spp., Microcalanus spp., and Microsetella norvegica) sampled using 64-µm mesh nets. Numerically, copepod nauplii (≥ 50%) and the young developmental stages of small copepods (< 2 mm prosome length as adult) dominated the samples. Three main patterns were identified: (1) large Calanus spp. were predominantly older copepodids CIV–CV, while (2) the small harpacticoid M. norvegica were adults. (3) For other species, all copepodid stages were present. Older copepodids and adults dominated populations of O. similis, Pseudocalanus spp. and M. longa. In Microcalanus spp., high proportion of young copepodids CI–CIII indicated active winter recruitment. We discuss the notion of winter as a developing and reproductive period for small copepods in light of observed age structures, presence of nauplii, and previous knowledge about the species. Lower predation risks during winter may, in part, explain why this season could be beneficial as a period for development. Winter may be a key season for development of small, omnivorous copepods in the Arctic, whereas large copepods such as Calanus spp. seems to be reliant on spring and summer for reproduction and development.
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Kabata, Z. "The developmental stages of Neobrachiella robusta (Wilson, 1912), a parasitic copepod of Sebastes (Teleostei: Scorpaeniformes)." Canadian Journal of Zoology 65, no. 6 (1987): 1331–36. http://dx.doi.org/10.1139/z87-210.

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The morphology of the developmental stages of Neobrachiella robusta (Wilson, 1912) (Copepoda: Siphonostomatoida) is described. The copepod is parasitic on the gill rakers of Sebastes alutus (Gilbert, 1890) (Teleostei: Scorpaeniformes). The life cycle of this copepod consists of a copepodid stage, followed by four chalimus stages and a relatively long preadult stage, which undergoes extensive metamorphosis. The copepods aggregate on the outer row of long gill rakers of the first gill arch, as many as 97% of them being attached to these rakers. Some of the rakers become distorted, but a connection between the presence of N. robusta and these abnormalities could not be established.
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Mulyadi, Mulyadi, and Conni M. Sidabalok. "PENGARUH MUSIM TERHADAP KERAGAMAN DAN KELIMPAHAN KOPEPODA (KRUSTASEA) DI PERAIRAN MANGROVE ESTUARI T. N. UJUNG KULON, BANTEN." Berkala Penelitian Hayati 15, no. 2 (2010): 191–97. http://dx.doi.org/10.23869/bphjbr.15.2.201015.

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An observation on Copepoda diversity and abundance in three mangrove estuaries in Ujung Kulon National Park, Banten was carried out in June and November 2008. The objective of this observation was to investigate the relationship between diversity and abundance of copepods with some environmental factors which affected the distribution in dry and rainy seasons. A total of 28 species from 17 genera and 14 families of copepods were recorded. The highest density of the copepod community was recorded in June (dry season) while the lowest density was in November (rainy season). The diversity, abundance and distribution of copepods were found to be different in the three sites.
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Bernot, James P., Geoffrey A. Boxshall, and Keith A. Crandall. "A synthesis tree of the Copepoda: integrating phylogenetic and taxonomic data reveals multiple origins of parasitism." PeerJ 9 (August 18, 2021): e12034. http://dx.doi.org/10.7717/peerj.12034.

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The Copepoda is a clade of pancrustaceans containing 14,485 species that are extremely varied in their morphology and lifestyle. Not only do copepods dominate marine plankton and sediment communities and make up a sizeable component of the freshwater plankton, but over 6,000 species are symbiotically associated with every major phylum of marine metazoans, mostly as parasites. Unfortunately, our understanding of copepod evolutionary relationships is relatively limited in part because of their extremely divergent morphology, sparse taxon sampling in molecular phylogenetic analyses, a reliance on only a handful of molecular markers, and little taxonomic overlap between phylogenetic studies. Here, a synthesis tree method is used to integrate published phylogenies into a more comprehensive tree of copepods by leveraging phylogenetic and taxonomic data. A literature review in this study finds fewer than 500 species of copepods have been sampled in molecular phylogenetic studies. Using the Open Tree of Life platform, those taxa that have been sampled in previous phylogenetic studies are grafted together and combined with the underlying copepod taxonomic hierarchy from the Open Tree of Life Taxonomy to make a synthesis phylogeny of all copepod species. Taxon sampling with respect to molecular phylogenetic analyses is reviewed for all orders of copepods and shows only 3% of copepod species have been sampled in phylogenetic studies. The resulting synthesis phylogeny reveals copepods have transitioned to a parasitic lifestyle on at least 14 occasions. We examine the underlying phylogenetic, taxonomic, and natural history data supporting these transitions to parasitism; review the species diversity of each parasitic clade; and identify key areas for further phylogenetic investigation.
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Izawa, Kunihiko. "Free-living stages of the parasitic copepod Lernanthropinus labracoglossae Izawa, 2014 (Siphonostomatoida, Lernanthropidae), reared from eggs." Crustaceana 87, no. 14 (2014): 1691–98. http://dx.doi.org/10.1163/15685403-00003377.

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Free-living stages, comprising two naupliar stages and the infective copepodid I, of the parasitic copepod Lernanthropinus labracoglossae Izawa, 2014 are described. The larvae were reared from eggs detached from an ovigerous female, recovered from the branchial lamellae of the Japanese actinopterygian fish Labracoglossa argentiventris Peter, 1866 (Kyphosidae). The number of naupliar stages prior to copepodopid I in the Lernanthropidae is the same as in the Caligidae, Pseudohatschekidae and Trebiidae. The copepodid I of the species has a frontal filament, as do representatives of the Caligidae, Pandaridae and Trebiidae. However, this is regarded as a vestigial feature in the last two families. Copepodid I of L. labracoglossae has a 6-segmented antennule, including the naked first segment, as do the first copepodids of eudactylinid 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 (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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Kassim, Zaleha, Hazwani Hanim Hasnan, Syazleen Zainal, and Nurul Huda Ahmad Ishak. "Report on five species of harpacticoid copepods from vegetative area of Sungai Pulai, Johor." Malaysian Journal of Fundamental and Applied Sciences 14, no. 2 (2018): 284–88. http://dx.doi.org/10.11113/mjfas.v14n2.1095.

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Bottom vegetation is known as preferred habitat for many types of meiofauna such as copepods. The conditions of sea bottom that include vegetation could contribute to the copepod’s assemblage. Being an important diet for fish larvae, information on copepod species promotes effort for conservation of both fish species and marine ecosystem. Nonetheless, identification and taxonomic report on copepods from such areas are still scanty. Samples of copepods were collected by scrapping the uppermost 10cm of sediment of bottom area at Sungai Pulai’s seagrass-bed during low tide. Sediment was decanted to extract the copepods which later be preserved in 5% buffered formalin. Body parts were dissected under microscope and prepared for taxonomic study. All drawings made with the help of Lucida tube were used for comparison with established key of identification. Five families were noted in this study; Ameridae Monard, Lang, Parastenhelia Thompson & A. Scott, Dactylopusiidae Lang, Tisbidae Sars and Diosaccidae Sars. Harpacticoid copepod species described from this study were Ameira sp. (Ameridae Monard, Lang), Parastenhelia sp. (Parastenhelia Thompson & A. Scott), Paradactylopodia sp. (Dactylopusiidae, Lang), Idyanthepusilla (Tisbidae, Sars) and Stenhelia sp. (Diosaccidae Sars). Further study on functional morphology would explain their adaptability to both conditions of sea bottom.
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Ferrari, Frank D., and J. Carel von Vaupel Klein. "Rhabdomoplea, a new superorder for the thaumatopsylloid copepods: the consequence of an alternative hypothesis of copepod phylogeny." Crustaceana 92, no. 2 (2019): 177–88. http://dx.doi.org/10.1163/15685403-00003850.

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Abstract The superorder Rhabdomoplea is established for copepods belonging to the order Thaumatopsylloida. Apomorphies for Rhabdomoplea are an adult prosome, including thoracic somites 1-4, complete at copepodid I, development of the posterior articulation of thoracic somite 7 of males delayed to copepodid IV and of abdominal somite 1 delayed to copepodid V, and absence of a posterior articulation of abdominal somites 2-3 forming with the anal somite a rod-like somite complex as part of the urosome. Rhabdomoplea appears to be the earliest branch of copepods because only thoracic somites 1-4 are broad throughout copepodid development, and thoracic somites 5 and 6 remain narrow. On podopleans and gymnopleans thoracic somite 5 is transformed from the anterior narrow somite to the posterior broad somite during the moult to copepodid II. On gymnopleans thoracic somite 6 also is transformed from the anterior narrow somite to the posterior broad somite but during the moult to copepodid III. Thus rhabdomopleans differ from podopleans in their body architecture as much as podopleans differ from gymnopleans. An alternative and traditional phylogeny that posits gymnopleans as the earliest branch of copepods requires reversal of these two transformations during copepod evolution; this hypothesis is not favoured here because the parsimonious hypothesis of direct, progressive transformations seems reasonable and plausible.
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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 (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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Dissertations / Theses on the topic "Copepods"

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Bannister, Neil Julian. "Bioluminescence in marine copepods." Thesis, Bangor University, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.238289.

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El-Rashidy, Hoda Hassan. "Ergasilid copepods and grey mullet." Thesis, Queen Mary, University of London, 1999. http://qmro.qmul.ac.uk/xmlui/handle/123456789/1555.

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The parasitic copepod family Ergasilidae currently comprises 26 genera and more than 180 species, the great majority of which utilises marine, brackish and freshwater fishes as hosts. Thirty-three species of Ergasilidae were obtained from examination of the gills of more than 3000 grey mullet preserved in the collections of the Natural History Museum. These species represent nine current genera of the family Ergasilidae: Acusicola, Dermoergasilus, Diergasilus, Ergasilus, Paraergasilus, Nipergasilus, Paeonodes, Mugilicola and Therodamas. Complete descriptions of twenty-two new species and redescriptions of five existing species are given in the taxonomic part. The cosmopolitan species E. lizae has been erroneously identified by many authors, therefore the type material was redescribed giving new details that have significant taxonomic value and have been overlooked in previous descriptions. Subsequently a group of closely related species, including four new species was recognized and is referred to as the E. lizae-complex. The antenna of Ergasilidae is modified as an attachment organ securing the parasite to its host. The examination and description of antennae of 26 species representing virtually all of the 26 genera included in the family, provided information on the functional morphology and the homology of antennal segments. The results revealed that the antenna of Ergasilidae is 4-segmented plus a curved claw, and that the third endopodal segment was previously overlooked by most authors. The different attachment mechanisms are discussed in relation to the antennal structure in the Ergasilidae. The phylogenetic relationships between the members of Ergasilidae were analysed using cladistic techniques. A character matrix initially comprising 96 characters was constructed from the literature, for most of the species. The results of this analysis suggest that the existing system of four subfamilies is untenable and several of the existing genera are recognized as terminal apomorphies in long lineages, or are paraphyletic. The biogeography of grey mullet hosts and the distribution patterns of the recorded ergasilids were analysed. The host specificity of each recorded species was also examined and it was concluded that many ergasilids exhibit a relatively low level of host specificity, with species tending to occur on a variety of hosts found in particular habitats. The co-evolutionary history of the Ergasilidae and the Mugilidae was examined in an attempt to examine the relative importance of co-evolution and colonization as processes influencing host specificity. A minimum of fifteen colonization events by ergasilids of mugilids as hosts was documented. This suggests that any basic coevolutionary pattern will have been greatly modified by colonization events (shifts in host groups).
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Rasberry, Katherine Denise. "The behavioral effect of laboratory turbulence on copepods." Thesis, Available online, Georgia Institute of Technology, 2005, 2005. http://etd.gatech.edu/theses/available/etd-07082005-124745/.

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Thesis (M. S.)--Civil and Environmental Engineering, Georgia Institute of Technology, 2006.<br>Webster, Donald, Committee Chair ; Yen, Jeannette, Committee Member ; Roberts, Philip, Committee Member.
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Md, Amin Roswati. "Copepods in Skeletonema-dominated food webs : Toxicity and nutritional quality as factors controlling copepod-diatom interactions." Doctoral thesis, Umeå universitet, Institutionen för ekologi, miljö och geovetenskap, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-49411.

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My thesis focuses on copepod-diatom interactions, specifically on the effects of food quality and toxicity on copepod feeding, reproductive success and behavior but as a frame, also includes a quantitative evaluation of copepod carbon requirements compared to other trophic plankton groups. My aim was to evaluate the function of copepods in diatom-dominated spring blooms. I thereby used a series of mesocosm and laboratory experiments. For a realistic extrapolation of the results to natural environments I used different strains of a diatom species, Skeletonema marinoi, which is a common spring blooming species in the Baltic Sea. This species is known to produce polyunsaturated aldehydes (PUA; mainly heptadienal, octadienal and decadienal), which have previously been identified as the potential reasons for the detrimental effects of diatoms on copepod reproduction. All strains varied in size, mineral and biochemical content, and PUA production. I tested the effects on different dominant copepod species from northern temperate waters; Acartia sp. (A. clausi and A. tonsa), Calanus finmarchicus, Pseudocalanus elongatus, and Temora longicornis, as well as the dominant species in the northern Baltic Sea, Eurytemora affinis. The specific contributions of respiratory carbon requiment of mesozooplankton and lower size fractions to carbon cycling during PUA-producing diatom blooms are poorly documented. My results show that nanoplankton and microzooplankton dominated the carbon cycling (&gt; 50% of primary production) whereas the contribution of bacterioplankton varied. Mesozooplankton was always of minor importance with contribution of &lt;6% of primary production.  This illustrates the importance of lower size fractions during a phytoplankton spring bloom. Irrespective of their small contribution to the total community carbon cycling, copepods displayed non-selective and typically high feeding rate on different PUA-producing S. marinoi strains, indicating that there was no feeding deterrence. The effect of feeding on copepod reproductive success, however, varied between different strains, and depending on copepod species. In experiments with monospecific diatom diets reduced egg production rate and hatching success were mainly related to food quality measured as fatty acids and sterols, or algae growth rate, low assimilation efficiency or PUA production / ingestion. On the other hand, copepod reproduction and population development in the diverse diet, including a high concentration of S. marinoi and PUA (both particulate and dissolved), increased with increasing food concentration and was unaffected by the presence of toxic diatoms. I conclude that although a negative correlation between different reproductive variables and PUA production / ingestion may sometimes be observed in laboratory incubations, this is highly dependent on the strain / species used, and the effect of the algal strain can be stronger than the effect of the e.g., growth-stage dependent PUA production. Although copepod grazing might not be very important during a diatom spring bloom, even a highly PUA-producing S. marinoi can be considered an appropriate food source for copepods when occurring among the natural food assemblage, inducing a high reproductive output.
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Pan, Yen-Ju. "Copepods in aquaculture : improving the quality and quantity of copepods for application as potential live prey." Thesis, Lille 1, 2016. http://www.theses.fr/2016LIL10151.

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Cette thèse contient quatre études majeures ciblant l'aquaculture des copépodes : (1) les conditions optimales de la culture de deux espèces tropicales, le calanoide Acartia bilobata et le cyclopoide Apocyclops royi ; (2) les œufs de résistance d'A. bilobata ; (3) les effets d'une sélection d’une souche performante d’A. royi en utilisant un nouveau protocole multi-générationnel et thermique ; (4) la pertinence de l’introduction des copépodes dans le régime alimentaire des larves de poissons. Pour le nourrissage des copépodes, les micro-algues de petites tailles (3-6 µm) riches en acides gras polyinsaturés (AGPI) sont plus avantageuses pour les deux espèces testées dans cette étude. De plus, nous avons démontré qu’A. royi, contrairement à A. bilobata, est capable de synthétiser des chaines longues d’AGPI à partir de chaines plus courtes d’AGPI. La salinité optimale pour le développement de la population est égale à 20. Les différentes caractéristiques de production d'œufs quiescents et de diapause, viables pendant plusieurs mois après stockage à 4°C, ont été identifiées chez deux souches d'A. bilobata. Une expérience de sélection de femelles d’A. royi a combiné les critères de productivité et du profil lipidique. Basé sur nos résultats obtenus sur l’élevage de larves de poissons, le régime alimentaire basé sur les nauplii d’A. tonsa obtenus en utilisant les œufs de résistance stockés à faible température, pourrait être avantageux pour des larves pélagiques; cependant, l'utilisation d'A. royi comme proie vivante devrait être soigneusement évaluée par la considération spécifique du comportement de nage de l'espèce de poisson ciblée<br>The present thesis contains four major studies addressed on copepod aquaculture: (1) optimal culture conditions of two tropical copepod species Acartia bilobata (Calanoida) and Apocyclops royi (Cyclopoida); (2) resting eggs of A. bilobata; (3) effects of thermal selective breeding on A. royi; (4) feeding suitability of copepod-based diets on larval fish. For copepod feeding, small-sized microalgae (3-6 μm) with rich polyunsaturated fatty acids (PUFAs) are preferable for both copepod species. Furthermore, we found that the cyclopoid A. royi, contrary to the calanoid A. bilobata, is capable of synthesizing long-chain PUFAs from short-chain PUFAs. The salinity affects differently the A. royi at different life stages, but it is suggested to cultivate this species at salinity 20 for the highest productivity. Various features of quiescent and diapausing eggs productions are identified in two culture strains of A. bilobata with different domestication levels, and those eggs remain viable after several months of cold storage (4°C). The larger female with higher nauplii production and compensative fatty acid increase were obtained in the cold-selected strain of A. royi. Based on our results found in fish larvae feeding trials, the diet based on A. tonsa nauplii derived from quiescent eggs could be beneficial for pelagic fish larvae; however, the use of A. royi as live prey should be carefully evaluated by the specific consideration of swimming behavior of targeted fish species. This thesis reveals the biological and physiological understandings on copepods, and provides implications on the application of copepods as promising live prey for larviculture
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Thor, Peter. "Specific dynamic action in calanoid copepods /." Roskilde : Roskilde University, Department of Life Sciences and Chemistry, 1999. http://www.rub.ruc.dk/epublisher/indhold_specific%20dynamic.pdf.

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Sivars, Becker Lena. "Food and Parasites – Life-history Decisions in Copepods." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis : Univ.-bibl. [distributör], 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-4268.

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Brandt, Petra [Verfasser]. "The Bacterial Community of Marine Copepods / Petra Brandt." Bremen : IRC-Library, Information Resource Center der Jacobs University Bremen, 2012. http://d-nb.info/1035019906/34.

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Smallman, Duncan Robert. "The behavioural, chemical and host ecology of two species of copepods (Copepoda : Caligidae) parasitic on Atlantic salmon (Salmo salar L.)." Thesis, Available from the University of Aberdeen Library and Historic Collections Digital Resources, 2009. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?application=DIGITOOL-3&owner=resourcediscovery&custom_att_2=simple_viewer&pid=25872.

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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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Books on the topic "Copepods"

1

Lee, Cheng-Sheng, Patricia J. O'Bryen, and Nancy H. Marcus, eds. Copepods in Aquaculture. Blackwell Publishing Professional, 2005. http://dx.doi.org/10.1002/9780470277522.

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Boxshall, Geoffrey A., and H. Kurt Schminke, eds. Biology of Copepods. Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-3103-9.

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Cheng-Sheng, Lee, O'Bryen P. J, Marcus Nancy H, and "Culture of Copepods and Applications to Marine Finfish Larval Rearing" (2003 : Honolulu, Hawaii), eds. Copepods in aquaculture. Blackwell Pub. Professional, 2005.

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Karanovic, Tomislav. Subterranean copepods (Crustacea, Copepoda) from the Pilbara region in Western Australia. Western Australian Museum, 2006.

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International Conference on Copepoda (3rd 1987 British Museum (Natural History)). Biology of copepods: Proceedings of the Third International Conference on Copepoda. Kluwer Academic Publishers, 1988.

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Ferrari, Frank D., and Brian P. Bradley, eds. Ecology and Morphology of Copepods. Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-017-1347-4.

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

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

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Mauchline, John. The Biology of calanoid copepods. Academic Press, 1998.

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S, Corner E. D., and O'Hara S. C. M, eds. The Biological chemistry of marine copepods. Clarendon Press, 1986.

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Book chapters on the topic "Copepods"

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Morales-Ramírez, Álvaro, and Eduardo Suárez-Morales. "Copepods." In Marine Biodiversity of Costa Rica, Central America. Springer Netherlands, 2009. http://dx.doi.org/10.1007/978-1-4020-8278-8_27.

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Dahms, Hans-Uwe. "Development of functional adaptation to clasping behaviour in harpacticoid copepods (Copepoda, Harpacticoida)." In Biology of Copepods. Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-3103-9_57.

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Kwint, Rik L. J., Xabier Irigoien, and Kees J. M. Kramer. "Copepods and DMSP." In Biological and Environmental Chemistry of DMSP and Related Sulfonium Compounds. Springer US, 1996. http://dx.doi.org/10.1007/978-1-4613-0377-0_21.

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Humes, Arthur G. "How many copepods?" In Ecology and Morphology of Copepods. Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-017-1347-4_1.

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Steiner, Katharina. "Copepods and Fisherboys." In Urban Histories of Science. Routledge, 2018. http://dx.doi.org/10.4324/9781315228549-5.

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Herring, Peter J. "Copepod luminescence." In Biology of Copepods. Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-3103-9_16.

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Kabata, Z. "Copepods and copepodologists, or What’s in a name?" In Biology of Copepods. Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-3103-9_1.

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Tande, Kurt S. "An evaluation of factors affecting vertical distribution among recruits of Calanus finmarchicus in three adjacent high-latitude localities." In Biology of Copepods. Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-3103-9_10.

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Conover, R. J. "Comparative life histories in the genera Calanus and Neocalanus in high latitudes of the northern hemisphere." In Biology of Copepods. Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-3103-9_11.

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Thistle, David, and James E. Eckman. "Response of harpacticoid copepods to habitat structure at a deep-sea site." In Biology of Copepods. Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-3103-9_12.

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Conference papers on the topic "Copepods"

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Fedorova, Irina, Larisa Ghazaryan, Vsevolod Rudakov, Elizaveta Chezhina, and Grigorii Fedorov. "HYDROECOLOGICAL STATE OF THE SMALL UPLAND ARMENIAN LAKES." In 24th SGEM International Multidisciplinary Scientific GeoConference 2024. STEF92 Technology, 2024. https://doi.org/10.5593/sgem2024/3.1/s12.13.

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During summer-autumn 2023 hydrophysical, hydrochemical, and hydrobiological measurements had been done on six small upland Armenian lakes. For the first time colored dissolved organic matter (CDOM) and methane (CH4) � emission were observed. Studied lakes are on 1479-3312 m a.s., has maximal depth up to 12 m with groundwater springs input. Anoxic conditions were noticed on the lake bottom in August but changed to oxygen in October. Conductivity range was 0-231 ?S cm-1, TDS - 3-102 mg l-1, pH � 6.4-9.4 for surfaces of all lakes. Main part of nutrients was silicates Si, phosphates PO4 and ammonium NH4. CH4 flux was quite high � reached 13 gCH4 m-2 d-1. Colored dissolved organic matter changes in 12 times range for the lakes, shows allochthonous and autochthonous source of organic matter, ecosystems have low ability to photo degradation. Ecosystems of lakes depends on altitudes. Thus, pelagic zooplankton of Shushanalich (1552 m a.s.) presented Rotifera, Cladocera and Cyclopoida mostly, whereas Lessing lake (3312 m a.s.) had only Copepoda (Calanus sp.). Numerous diatoms were in plankton and sediments.
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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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Zavala-Hamz, Victor A., and Josue Alvarez-Borrego. "Rotation-invariant recognition of copepods by circular harmonic filters." In ICO XVIII 18th Congress of the International Commission for Optics, edited by Alexander J. Glass, Joseph W. Goodman, Milton Chang, Arthur H. Guenther, and Toshimitsu Asakura. SPIE, 1999. http://dx.doi.org/10.1117/12.354764.

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Kareem, A., I. D. Begum, G. Mantha, and K. Sivakkumar. "Biodiversity, feeding and reproduction of copepods of Chennai coast-India." In Oceans 2003. Celebrating the Past ... Teaming Toward the Future (IEEE Cat. No.03CH37492). IEEE, 2003. http://dx.doi.org/10.1109/oceans.2003.178193.

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Hamouda, Amr, A. V. Simakova, J. S. Noskov, I. B. Babkina, R. T.-o. Baghirov, and D. I. Gorn. "STRUCTURE AND DYNAMICS OF ZOOPLANKTON OF THE EASTERN MEDITERRANEAN (MATRUCH PROVINCE, EGYPT)." In V International Scientific Conference CONCEPTUAL AND APPLIED ASPECTS OF INVERTEBRATE SCIENTIFIC RESEARCH AND BIOLOGICAL EDUCATION. Tomsk State University Press, 2020. http://dx.doi.org/10.17223/978-5-94621-931-0-2020-42.

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The species diversity of zooplankton in the Eastern Mediterranean (Matruh province, Egypt) is represented by 21 species, 17 of which are holoplankton and 4 are meroplankton. The tendency of an increase in the number of species and the number of copepods from the summer period (5 species) to the winter period (10 species) was noted.
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Biandolino, Francesca, Isabella Parlapiano, Asia Grattagliano, Giovanni Libralato, and Ermelinda Prato. "Toxicological impact of Rare Earth Elements (REEs) to marine copepods Tigriopus fulvus." In 2023 IEEE International Workshop on Metrology for the Sea; Learning to Measure Sea Health Parameters (MetroSea). IEEE, 2023. http://dx.doi.org/10.1109/metrosea58055.2023.10317445.

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Sidler, D., F. Michalec, and M. Holzner. "3D observation of the behavior of benthic copepods in a transparent gravel bed." In The International Conference On Fluvial Hydraulics (River Flow 2016). CRC Press, 2016. http://dx.doi.org/10.1201/9781315644479-98.

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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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Lou, Zhipeng, Adrian Herrera-Amaya, Margaret L. Byron, and Chengyu Li. "Hydrodynamics of Metachronal Motion: Effects of Spatial Asymmetry on the Flow Interaction Between Adjacent Appendages." In ASME 2022 Fluids Engineering Division Summer Meeting. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/fedsm2022-86967.

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Abstract Metachronal motion is a unique swimming strategy widely adopted by many small animals on the scale of microns up to several centimeters (e.g., ctenophores, copepods, krill, and shrimp). During propulsion, each evenly spaced appendage performs a propulsive stroke sequentially with a constant phaselag from its neighbor, forming a metachronal wave. To produce net thrust in the low-to-intermediate Reynolds number regime, where viscous forces are dominant, the beat cycle of a metachronal appendage must present significant spatial asymmetry between the power and recovery stroke. As the Reynolds number increases, the beat cycle is observed to change from high spatial asymmetry to lower spatial asymmetry. However, it is still unclear how the magnitude of spatial asymmetry can modify the shear layers near the tip of appendages and thus affect its associated hydrodynamic performance. In this study, ctenophores are used to investigate the hydrodynamics of multiple appendages performing a metachronal wave. Ctenophores swim using paddle-like ciliary structures (i.e., ctenes), which beat metachronally in rows circumscribing an ovoid body. Based on high-speed video recordings, we reconstruct the metachronal wave of ctenes for both a lower spatial asymmetry case and a higher spatial asymmetry case. An in-house immersed-boundary-method-based computational fluid dynamics solver is used to simulate the flow field and associated hydrodynamic performance. Our simulation results aim to provide fundamental fluid dynamic principles for guiding the design of bio-inspired miniaturized flexible robots swimming in the low-to-intermediate Reynolds number regime.
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Kostoski, Goce, and Orhideja Tasevska. "SEASONAL DYNAMICS OF THE PLANKTON ROTIFERA, CRUSTACEA (COPEPODA AND CLADOCERA) COMMUNITY FROM THE PELAGIAL OF LAKE PRESPAN - KAZAN LOCATION." In 53rd Annual Conference of the Serbian Water Pollution Control Society. SERBIAN WATER POLLUTION CONTROL SOCIETY, 2024. http://dx.doi.org/10.46793/voda24.187k.

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Within the PONT project, the diversity of representatives of Rotifera, Crustacea (Copepoda and Cladocera), which are the most abundant food for ichthyofauna, was monitored. Their saprobiological affiliation and abundance was determined. The material was collected from the pelagic zone, Kazan locality, and processed by standard limnological methods. The presence of 9 representatives of Rotifera, 5 Cladocera, 3 Copepoda and one representative of Mollusca was noted It is characteristic for all species that they are found in waters rich in calcium and waters with an acidic environment. While, in terms of electrical conductivity, they are found both in waters with low and in waters with high electrical conductivity. Based on the saprobiological affiliation of the species, they range from 1.1 to 2.2 saprobity index
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Reports on the topic "Copepods"

1

Yen, Jeannette, and Akira Okubo. Fluid Mechanoreception by Marine Copepods. Defense Technical Information Center, 1996. http://dx.doi.org/10.21236/ada325396.

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Copley, Nancy J., Peter H. Wiebe, and Timothy J. Cowles. Copepods from Warm-Core Ring 82-H. Defense Technical Information Center, 1989. http://dx.doi.org/10.21236/ada258460.

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เปี่ยมสมบูรณ์, อัจฉราภรณ์, สมภพ รุ่งสุภา, ณิชยา ประดิษฐ์ทรัพย์, ทิพวรรณ ตัณฑวณิช, อานุภาพ พานิชผล та ทัชชา โชคตปมิตต์กานนท์. การศึกษาเปรียบเทียบความหลากหลายทางชีวภาพของสัตว์ทะเลหน้าดินและสาหร่ายหน้าดินขนาดเล็กในระบบนิเวศทางทะเลของเกาะแสมสารและเกาะสีชัง ในพื้นที่โครงการอนุรักษ์พันธุกรรมพืชอันเนื่องมาจากพระราชดำริฯ. จุฬาลงกรณ์มหาวิทยาลัย, 2011. https://doi.org/10.58837/chula.res.2011.77.

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ทำการศึกษาความหลากหลายและการกระจายของสิ่งมีชีวิตหน้าดินขนาดเล็กและสาหร่ายหน้าดินขนาดเล็กในแนวปะการังของเกาะแสมสารและเกาะท้ายค้างคาวซึ่งเป็นตัวแทนของปะการังในในกลุ่มเกาะสีชัง โดยเก็บตัวอย่างดินจากแนวปะการังสองด้านของแต่ละเกาะในฤดูแล้ง เดือนพฤศจิกายน 2553 และฤดูฝนเดือนพฤษภาคมถึงเดือนกรกฎาคม 2554 นอกจากนี้ได้ทำการตรวจวัดปัจจัยสภาพแวดล้อมในแนวปะการะงในระหว่างเก็บตตัวอย่างและเก็บน้ำสำหรับการวิเคราะห์ปริมาณสารอาหารอนินทรีย์ละลายน้ำและศึกษาการกระจายของสัตว์ทะเลขนาดใหญ่ในบริเวณที่เก็บตัวอย่างด้วย ผลการศึกษาพบว่าสภาพแวดล้อมในฤดูฝนมีปริมาณสารอาหารไนโตรเจนอนินทรีย์สูงกว่าสารอาหารฟอสฟอรัส ส่วนอุณหภูมิและความเค็มของน้ำทะเลอยู่ในช่วงปกติ แนวปะการังของเกาะแสมสารและเกะท้ายค้างคาวมีปะการังแบบโขดหรือปะการังก้อน (Porites spp.) เป็นกลุ่มเด่น สัตว์ทะเลหน้าดินขนาดเล็กที่พบเป็นกลุ่มเด่นคือ ไส้เดือนตัวกลม (Nematodes) และ Harpacticoid copepods ส่วนฟอแรมมินิเฟอร่าที่พบเป็นกลุ่มเด่นอยู่ในครอบครัว Hauerinidae และครอบครัว Cornuspiridae ความหนาแน่นของฟอแรมมินิเฟอร่าในฤดูฝนมีค่าสูงกว่าในฤดูแล้ง สาหร่ายหน้าดินขนาดเล็กที่พบมีความหลากหลายระดับสกุลถึง 54 สกุล ซึ่งสูงกว่าการศึกษาในปีที่ผ่านมา สาหร่ายหน้าดินขนาดเล็กที่เป็นกลุ่มเด่นอยู่ในกลุ่มของ Pennate diatom ในสกุล Amphora และสกุล Navicula ซึ่งมีความหลากหลายในระดับชนิดสูงด้วย องค์ประกอบของฟอแรมมินิเฟอร่าและสาหร่ายหน้าดินขนาดเล็กกลุ่มเด่นในบริเวณแนวปะการังของเกาะแสมสารและเกาะท้ายค้างคาวมีความคล้ายคลึงกัน
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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), 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.), 2018. http://dx.doi.org/10.21079/11681/27968.

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Thistle, David. The Taxonomy of the Harpacticoid Copepods of the Northern Gulf of Mexico: A Taxon of Potential Importance to the Navy. Defense Technical Information Center, 2000. http://dx.doi.org/10.21236/ada609901.

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Thistle, David. The Taxonomy of the Harpacticoid Copepods of the Northern Gulf of Mexico: a Taxon of Potential Importance to the Navy. Defense Technical Information Center, 1999. http://dx.doi.org/10.21236/ada630180.

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Thistle, David. The Taxonomy of the Harpacticoid Copepods of the Northern Gulf of Mexico; a Taxon of Potential Importance to the Navy. Defense Technical Information Center, 1997. http://dx.doi.org/10.21236/ada634217.

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Franks, Peter J. Field, Lab and Modelling Study of Microscale Copepod Distributions. Defense Technical Information Center, 1997. http://dx.doi.org/10.21236/ada628451.

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Baumgartner, Mark, Rubao Ji, and Changsheng Chen. Physical and Biological Controls of Copepod Aggregation and Baleen Whale Distribution. Defense Technical Information Center, 2010. http://dx.doi.org/10.21236/ada541813.

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