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72 results for “Calanoid copepods”
Figure 1 in Molecular evidence on evolutionary switching from particle-feeding to sophisticated carnivory in the calanoid copepod family Heterorhabdidae: drastic and rapid changes in functions of homologues
Figure 1. Morphology-based phylogenetic trees of the heterorhabdids. A and B, Ohtsuka et al. (1997); C, Park (2001).
Figs 4 A and B in Trichodina diaptomi (Ciliophora: Peritrichia) from Two Calanoid Copepods from Botswana and South Africa, with Notes on its Life History
Figs 4 A and B. Diagrammatic drawings of the denticles of two different specimens of Trichodina diaptomi Šrámek-Hušek, 1953 from the carapace of Metadiaptomus transvaalensis from the Nata River, Botswana to illustrate variation in denticle shape.
Figs 3 A–E in Trichodina diaptomi (Ciliophora: Peritrichia) from Two Calanoid Copepods from Botswana and South Africa, with Notes on its Life History
Figs 3 A–E. Micrographs of Metadiaptomus transvaalensis with Trichodina diaptomi Šrámek-Hušek, 1953 on the carapace collected from the Nata River, Botswana in August 2012. Whole specimen of M. transvaalenis with several trichodinids visible on dorsal surface of body (A), M. transvaalensis with several trichodinids visible on dorsal surface opposite locomotory appendages of copepod (C) and close-up views of dorsal carapace of M. transvaalensis with trichodinids clearly visible on surface of copepod (B, D, E) with two detached trichodinids visible in D.
Figs 2 A–F in Trichodina diaptomi (Ciliophora: Peritrichia) from Two Calanoid Copepods from Botswana and South Africa, with Notes on its Life History
Figs 2 A–F. Micrographs of silver impregnated adhesive discs (A, B, E and F) and haematoxylin stained specimens (C and D), showing the nuclear apparatus (C) and adoral spiral (D) of Trichodina diaptomi Šrámek-Hušek, 1953 from the Nata River (A–D) and Rustfontein Dam (E and F).
Data from: Seasonal variability drives differences in the structure of the calanoid copepod community in two contrasting regions of the Gulf of Mexico
<p>Calanoid copepods (CC) are key contributors to the biological carbon pump and pelagic trophic dynamics. The deep-water regions of Perdido and the Bay of Campeche in the western and southern Gulf of Mexico (GM), respectively, differ in hydrography and productivity, leading to potential differences in copepod biomass and community structure. Zooplankton (0-200 m) were collected from the shelf edge to the deep-water region during the winter and summer autumn 2016. Calanoids contributed 38-60% of total zooplankton biomass and 55-70% of overall copepod abundance. The Bay of Campeche had the highest total zooplankton biovolume (287±120 ml 1000 m<sup>-3</sup>) and total mean copepod abundance (CC and non-calanoids ~146,000 ind. 1000 m<sup>-3</sup>) during summer-autumn, likely resulting from cross-shelf nutrient transport fueling local productivity. Adult females dominated calanoid numerical abundance (43-50%), thus suggesting a high reproductive potential. Cluster analysis showed differences between seasons (~40% dissimilarity) but not regions. Environmental conditions explained 22% of the variability in community composition; the winter assemblage was significantly related to oxygen concentrations, whereas the summer-autumn community was related to warmer conditions and higher integrated chlorophyll-<em>a</em> concentrations. The CC community responded to seasonal changes more than regionally related hydrographic differences, with likely implications for organic matter cycling and export.</p>
Data for "Upward migration of calanoid copepods is driven by high food quality in surface waters in an alpine lake"
<p>In this study, we explored why zooplankton migrated to surface waters at night from the perspective of their physiological characteristics and adaptability to the environment. The calanoid Arctodiaptomus sp. accumulated large amounts of polyunsaturated fatty acids (PUFAs) and astaxanthin, which relieved oxidative stress to fatty acids. The concentrations of lutein, a precursor of astaxanthin synthesis, were highest in surface water, indicating the enhancement of ultraviolet radiation (UVR) to precursor synthesis, which was confirmed by our indoor experiment. The calanoids migrated to surface water at night to obtain high concentrations of lutein and PUFAs from their diets. Relevant data for this study include: the vertical distribution of <em>Arctodiaptomus</em> sp. during the day and at night; concentrations of total astaxanthin, free astaxanthin, astaxanthin esters in <em>Arctodiaptomus</em> sp. at night and during the day; fatty acid concentration and the ratio of SAFAs (saturated fatty acids), MUFAs (monounsaturated fatty acids), and PUFAs in<em> Arctodiaptomus</em> sp. during the day and at night; the carotenoid concentrations in seston at different depth of Lake Heihai during the day and at night; the lutein concentration in seston under UVR and dark treatment; main characteristics of Lake Heihai; fatty acid concentrations and the ratio of SAFAs , MUFAs, and PUFAs of seston in Lake Heihai; the relative abundance of Chlorophytes with the size of greater than 5 μm and 0.2-5 μm in different layers of Lake Heihai; fatty acid concentrations of the calanoids in Fuxian Lake.</p>
Data from: Seasonal variability drives differences in the structure of the calanoid copepod community in two contrasting regions of the Gulf of Mexico
Open the record for dataset details and reuse information.
FIGURE 3 in New species of small, bathypelagic calanoid copepods from the Arctic Ocean: Brodskius arcticus sp. nov. (Tharybidae) and three new species of Pertsovius gen. nov. (Discoidae)
FIGURE 3. Pertsovius tridentatus gen. et sp. nov. Holotype female. 1—antennule, 2—habitus, dorsal; 3—habitus, from the left side; 4—urosome, ventral; 5—genital double somite, left side; 6—antenna; 7—mandibular palp; 8—mandibular blade, 9— maxillule, 10—maxilla, 11—maxilliped. Scale bars: 0.1 mm.
FIGURE 8 in New species of small, bathypelagic calanoid copepods from the Arctic Ocean: Brodskius arcticus sp. nov. (Tharybidae) and three new species of Pertsovius gen. nov. (Discoidae)
FIGURE 8. Pertsovius serratus gen. et sp. nov. Holotype female. 1—P1; 2—left Р2; 3—distal segment of the right exopod of Р2; 4—Р3; 5—Р4. Scale bar: 0.1 mm.
FIGURE 5 in New species of small, bathypelagic calanoid copepods from the Arctic Ocean: Brodskius arcticus sp. nov. (Tharybidae) and three new species of Pertsovius gen. nov. (Discoidae)
FIGURE 5. Pertsovius heterodentatus gen. et sp. nov. Female (1–2—paratype, 3–6—holotype). 1—habitus dorsal; 2—habitus lateral; 3—urosome, ventral; 4—genital double somite, left side; 5—maxilliped; 6—basis of maxilliped. Scale bars: 0.1 mm.
FIGURE 4 in New species of small, bathypelagic calanoid copepods from the Arctic Ocean: Brodskius arcticus sp. nov. (Tharybidae) and three new species of Pertsovius gen. nov. (Discoidae)
FIGURE 4. Pertsovius tridentatus gen. et sp. nov. Female (1–2 and 4–5—holotype, 3—paratype). 1—Р1; 2—exopod of P2; 3—Р2; 4—Р3; 5—Р4. Scale bar: 0.1 mm.
FIGURE 2 in New species of small, bathypelagic calanoid copepods from the Arctic Ocean: Brodskius arcticus sp. nov. (Tharybidae) and three new species of Pertsovius gen. nov. (Discoidae)
FIGURE 2. Swimming legs of Brodskius spp. 1–5—P1-P5 of Brodskius arcticus sp. nov., holotype female; 6–10—Р5 of females of other Brodskius species for comparison: 6—B. abyssalis Markhaseva & Schulz 2007 (from Markhaseva & Schulz, 2007; reproduced with permission from Taylor & Francis); 7—B. paululus (Park, 1970) (from Park 1970; reproduced with permission from University of Miami); 8—B. benthopelagicus Markhaseva & Ferrari, 2005 (after Markhaseva & Ferrari 2005 with changes; reproduced with permission from KMK Publishing House, Moscow); 9—B. robustipes (Grice & Hulsemann, 1965) (from Grice & Hulsemann 1965; reproduced with permission from John Wiley and Sons); 10—B. paraincertus (Grice & Hulsemann, 1965) (after Grice & Hulsemann 1965 with changes; reproduced with permission from John Wiley and Sons). Scale bar for figures 1–5: 0.1 mm.
FIGURE 7 in New species of small, bathypelagic calanoid copepods from the Arctic Ocean: Brodskius arcticus sp. nov. (Tharybidae) and three new species of Pertsovius gen. nov. (Discoidae)
FIGURE 7. Pertsovius serratus gen. et sp. nov. Holotype female. 1—habitus dorsal; 2—habitus, lateral; 3—rostral area, left side; 4—genital double somite, left side; 5—urosome, ventral; 6—mandibular blade; 7—maxilliped. Scale bars: 0.1 mm.
FIGURE 1 in New species of small, bathypelagic calanoid copepods from the Arctic Ocean: Brodskius arcticus sp. nov. (Tharybidae) and three new species of Pertsovius gen. nov. (Discoidae)
FIGURE 1. Brodskius arcticus sp. nov. Holotype female. 1—habitus dorsal; 2—habitus from the left side; 3—antenna, 4— rostrum, from the left side; 5—rostrum, frontal view; 6—genital double somite, ventral; 7—same, from the left side, 8–10— mandibular blade, 11—maxillule, 12—maxilla, 13—maxilliped. Scale bars: 0.1 mm.
FIGURE 6 in New species of small, bathypelagic calanoid copepods from the Arctic Ocean: Brodskius arcticus sp. nov. (Tharybidae) and three new species of Pertsovius gen. nov. (Discoidae)
FIGURE 6. Pertsovius heterodentatus gen. et sp. nov. Female (1–2, 4–5—holotype, 3—paratype). 1—Р1; 2–3—Р2; 4—Р3; 5—Р4. Scale bar: 0.1 mm.
FIGURE 8 in A new family and genus of calanoid copepods (Crustacea) from the abyss of the Atlantic Ocean
FIGURE 8. Kyphocalanus sp. 1. Female. A, maxilla, praecoxal and coxal endites; B, maxilla, basal endites and endopod; C, P1; D, P5. Scale bars 0.1 mm.
FIGURE 7 in A new family and genus of calanoid copepods (Crustacea) from the abyss of the Atlantic Ocean
FIGURE 7. Kyphocalanus sp. 1. Female. A, antenna; B, mandible; C, maxillule; D, maxilliped. Scale bars 0.1 mm.
FIGURE 5 in A new family and genus of calanoid copepods (Crustacea) from the abyss of the Atlantic Ocean
FIGURE 5. Kyphocalanus atlanticus gen. et sp. nov. Female, holotype. A, P1 right; B, P1, left endopod; C, P2; D, P3; E, P4. Scale bars 0.1 mm.
FIGURE 10 in A new family and genus of calanoid copepods (Crustacea) from the abyss of the Atlantic Ocean
FIGURE 10. Kyphocalanus sp. 2. Female. A, mandible, palp; B, mandible, gnathobase; C, maxilla, praecoxal, coxal and proximal basal endite; D, maxilla, basal endites and endopod. Scale bars 0.1 mm.
FIGURE 3 in A new family and genus of calanoid copepods (Crustacea) from the abyss of the Atlantic Ocean
FIGURE 3. Kyphocalanus atlanticus gen. et sp. nov. Female, holotype. A, maxillule; B, maxilliped; C, P5. Scale bars 0.1 mm.
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