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272 results for “Nudibranchs”
Figure 1 in High-level taxonomic splitting in allopatric taxa causes confusion downstream: a revision of the nudibranch family Сoryphellidae
Figure 1. Phylogenetic hypotheses of Flabellinoidea s.l. based on the concatenated dataset. A, Maximum likelihood, numbers above branches indicate bootstrap values (> 60). B, Bayesian inference, numbers above branches indicate posterior probabilities (> 0.9). Species-level clades and outgroups are collapsed.
Figure 7 in High-level taxonomic splitting in allopatric taxa causes confusion downstream: a revision of the nudibranch family Сoryphellidae
Figure 7. SEM micrographs of jaws in Coryphella verrucosa. A, left jaw plate, ZMMU WS14923, Haplogroup A. B, details of denticulation on masticatory process, ZMMU WS14923, Haplogroup A. C, right jaw plate, ZMMU WS14439, Haplogroup C. D, details of denticulation on masticatory process, ZMMU WS14439, Haplogroup C. E, details of denticulation on masticatory process, ZMMU WS14382, Haplogroup A. F, details of denticulation on masticatory process, ZMMU WS14440, Haplogroup B. Scale bars: A, C = 300 µm, B, D = 30 µm, E = 100 µm, F = 10 µm.
Figure 4 in High-level taxonomic splitting in allopatric taxa causes confusion downstream: a revision of the nudibranch family Сoryphellidae
Figure 4. Living specimens of Coryphella verrucosa, Haplogroup A. A, 'verrucosa' morphotype, ZMBN126020, c. 25 mm in length. B, 'verrucosa' morphotype, ZMBN125092, c. 35 mm in length. C, 'verrucosa' morphotype, ZMMU WS14928, 18 mm in length preserved. D, 'intermediate' morphotype, ZMMU WS14927, 21 mm in length preserved. E, 'rufibranchialis' morphotype, ZMMU WS14912, 14 mm in length preserved. F, 'rufibranchialis' morphotype, ZMBN125543, c. 25 mm in length. G, 'rufibranchialis' morphotype, ZMMU WS14397, 15 mm in length preserved. H, 'rufibranchialis' morphotype, ZMBN127572, c. 25 mm in length. I, juvenile, ZMBN125893, c. 6 mm in length. J, Coryphella verrucosa in natural environment, 'verrucosa' morphotype, ZMBN125618. K, Coryphella verrucosa in natural environment, 'intermediate' morphotype, ZMBN127490. Photo credits: A, Viktor V. Grøtan; B, F, H, I, K, Anders Schouw; C, D, E, G, Tatiana Antokhina; J, Nils Aukan.
Figure 9 in High-level taxonomic splitting in allopatric taxa causes confusion downstream: a revision of the nudibranch family Сoryphellidae
Figure 9. Living specimens of Coryphella gracilis (former Microchlamylla gracilis). A, ZMBN127842, no measurements taken. B, ZMBN125110, c. 15 mm in length. C, ZMBN125576, c. 8 mm in length. D, ZMMU WS14914, 14 mm in length preserved. E, voucher not specified, 11 mm in length. F, ZMMU WS14930, 9 mm in length. G, juvenile, ZMMU WS14929, 4 mm in length preserved. Photo credits: A, C, Heine Jensen; B, Anders Schouw; D, Tatiana Antokhina; E–G, Irina Ekimova.
Figure 2 in High-level taxonomic splitting in allopatric taxa causes confusion downstream: a revision of the nudibranch family Сoryphellidae
Figure 2. Part of the maximum likelihood-based phylogenetic tree of Flabellinoidea s.l., showing relationships within the family Coryphellidae. Each branch is coloured according to the primary species hypothesis sensu Korshunova et al. (2017a) and provided on the left. Revised identifications representing the result of the present study are provided on the right. Numbers above branches indicate the bootstrap values (for BS> 60). Blocks on the right indicate species delimitation results: coloured blocks refer to groups matching the initial species hypothesis, grey blocks indicate results when the initial species hypothesis is not supported by a delimitation method. Abbreviations: JC, Jukes–Cantor model; K80, Kimura 2-parameter model; SD, Simple distances.
Figure 3 in High-level taxonomic splitting in allopatric taxa causes confusion downstream: a revision of the nudibranch family Сoryphellidae
Figure 3. COI haplotype networks of trans-Arctic species within the family Coryphellidae produced with TCS method in PopART. A, Coryphella verrucosa. Red stars indicate haplotypes comprising the type specimens of Coryphella pseudoverrucosa. Blue stars indicate haplotypes comprising 'verrucosa' form of Coryphella verrucosa. The rest of the haplotypes are represented only by specimens of the 'rufibranchialis' morphotype. B, Coryphella amabilis and Coryphella gracilis (former genus Microchlamylla). C, Coryphella nobilis and Coryphella sanamyanae (former genus Borealea). Colours of circles refer to the geographic origin of each haplotype. The relative size of circles is proportional to the number of sequences of that same haplotype. Coloured background indicates the initial species hypothesis. H.A, H.B and H.C. refer to Haplogroup A, Haplogroup B and Haplogroup C, respectively.
Figure 8 in High-level taxonomic splitting in allopatric taxa causes confusion downstream: a revision of the nudibranch family Сoryphellidae
Figure 8. Reproductive system of target species. A, Coryphella verrucosa, ZMMU WS14479, Haplogroup A. B, Coryphella verrucosa, ZMMU WS14398, Haplogroup C. C, Borealea nobilis, ZMMU WS14443. D, Coryphella sanamyanae, ZMMU WS14416. E, Coryphella gracilis, ZMMU WS14914. F, Coryphella gracilis, ZMMU WS14418. Abbreviations: amp, ampulla; fgm, female gland mass; dsr, distal receptaculum seminis; psr, proximal receptaculum seminis (= 'bursa copulatrix'); ps, penial sheath; pvd, prostatic vas deferens. Scale bars: A–D = 1 mm; E, F = 500 µm.
Figure 5 in High-level taxonomic splitting in allopatric taxa causes confusion downstream: a revision of the nudibranch family Сoryphellidae
Figure 5. Living specimens of Coryphella verrucosa, Haplogroups B and C (former Coryphella pseudoverrucosa). A, ZMMU WS14972, Haplogroup B, 27 mm in length. B, ZMMU WS14967, Haplogroup B, 25 mm in length. C, ZMMU WS14951, Haplogroup B, 22 mm in length. D, ZMMU WS14968, Haplogroup B, 17 mm length. E, ZMMU WS14970, Haplogroup B, 17 mm in length. F, ZMMU WS14971, Haplogroup B, 12 mm in length. G, MIMB40024, Haplogroup B, 10 mm in length. H, MIMB40025, Haplogroup C, 21 mm in length preserved. I, Coryphella verrucosa in natural environment, ZMMU WS14421 and ZMMU WS14422, Haplogroup C. J, Coryphella verrucosa in natural environment, ZMMU WS14439 and ZMMU WS14440, Haplogroups C and B, respectively. Photo credits: A–F, Tatiana Antokhina; G, H, Anastassya Mayorova; I, J, Anton Chichvarkhin.
Figure 6 in High-level taxonomic splitting in allopatric taxa causes confusion downstream: a revision of the nudibranch family Сoryphellidae
Figure 6. SEM micrographs of middle radular portion in Coryphella verrucosa. A, ZMMU WS14451, Haplogroup A. B, ZMMU WS14484, Haplogroup A. C, ZMMU WS14504, Haplogroup A. D, ZMMU WS14404, Haplogroup B. E, ZMMU WS14413, Haplogroup B. F, ZMMU WS14402, Haplogroup B. G,ZMMU WS14421, Haplogroup C. H, ZMMU WS14439, Haplogroup C. Scale bars: A, B = 30 µm, C, D, F–H = 10 µm, E = 20 µm.
FIGURE 19 in Five new deep-sea species of nudibranchs (Gastropoda: Heterobranchia: Cladobranchia) from the Northeast Pacific
FIGURE 19. SEMs of the radula and jaws of a specimen of the holotype of Aeolidia libitinaria sp. nov. (SIO-BIC M12138). A. Jaw. B. Radular teeth.
FIGURE 11 in Five new deep-sea species of nudibranchs (Gastropoda: Heterobranchia: Cladobranchia) from the Northeast Pacific
FIGURE 11. Photographs of ventral, lateral and dorsal views of the external morphology of preserved specimens of Ziminella vrijenhoeki sp. nov. A–C. Holotype (SIO-BIC M12137), A. Ventral view of the head, B. Dorsal view of the head, C. Lateral view of the anterior portion of the body. D–E. Paratype (SIO-BIC M12135), D. Lateral view of the anterior portion of the body, E. Dorsal view of the head. Abbreviations: a, anus; fc, foot corner; ot, oral tentacle; pe, penis; rh, rhinophores; ro, reproductive opening.
FIGURE 15 in Five new deep-sea species of nudibranchs (Gastropoda: Heterobranchia: Cladobranchia) from the Northeast Pacific
FIGURE 15. Photographs of ventral, lateral and dorsal views of the external morphology of preserved specimens of several Aeolidida. A–B. Holotype of Cuthona methana sp. nov. (SIO-BIC M12413), A. Ventral view of the head; B, Lateral view of the anterior portion of the body. C–D. Paratype of Cuthona methana sp. nov. (SIO-BIC M12412), C. Ventral view of the head; D, Lateral view of the anterior portion of the body. E–F. Specimen of Zeusia herculea (Linnaeus, 1761) (SIO-BIC M12136), E. Ventral view of the head; F, Dorsal view of the head. G–H. Holotype of Aeolidia libitinaria sp. nov. (SIO-BIC M12138), G. Ventral view of the head; H, Dorsal view of the head. Abbreviations: a, anus; ot, oral tentacle; pe, penis; rh, rhinophores; ro, reproductive opening.
FIGURE 5 in Five new deep-sea species of nudibranchs (Gastropoda: Heterobranchia: Cladobranchia) from the Northeast Pacific
FIGURE 5. SEMs of the radula and jaws of the holotype of Tritonia nigritigris sp. nov. (LACM 3553). A. Rachidian and inner lateral radular teeth. B. Lateral radular teeth. C. Outer radular teeth. D. Jaw.
FIGURE 8 in Five new deep-sea species of nudibranchs (Gastropoda: Heterobranchia: Cladobranchia) from the Northeast Pacific
FIGURE 8. SEMs of the radula and jaws of the single specimen of Tritonia sp. (SIO-BIC M12395). A. Rachidian and inner lateral radular teeth. B. Lateral radular teeth. C. Outer radular teeth. D. Jaw. E. Jaw masticatory border.
FIGURE 2 in Five new deep-sea species of nudibranchs (Gastropoda: Heterobranchia: Cladobranchia) from the Northeast Pacific
FIGURE 2. Digital images of live animals showing color in life. A. Tritonia nigritigris sp. nov., holotype (LACM 3553), in situ, right side invaginations indicated with arrows. B. Tritonia sp. (SIO-BIC M12395), lab photo. C. Dendronotus claguei sp. nov., holotype (LACM 3555), in situ. D. Ziminella vrijenhoeki sp. nov., holotype (SIO-BIC M12137), lab photo. E. Ziminella vrijenhoeki sp. nov., paratype (SIO-BIC M12135), lab photo. F. Cuthona methana sp. nov., holotype (SIO-BIC M12413), lab photo. G. Cuthona methana sp. nov., paratype (SIO-BIC M12412), lab photo. H. Aeolidia libitinaria sp. nov., holotype (SIO- BIC M12138), lab photo.
FIGURE 18 in Five new deep-sea species of nudibranchs (Gastropoda: Heterobranchia: Cladobranchia) from the Northeast Pacific
FIGURE 18. Drawings of the internal anatomy of the holotype of Aeolidia libitinaria sp. nov. (SIO-BIC M12138). A. General view of the internal anatomy. B. Reproductive system. Abbreviations: am, ampulla; bb, buccal bulb; cns, central nervous system; dg, digestive gland; es, esophagus; fgc, female gland complex; i, intestine; pe, penis.
FIGURE 14 in Five new deep-sea species of nudibranchs (Gastropoda: Heterobranchia: Cladobranchia) from the Northeast Pacific
FIGURE 14. Bayesian consensus phylogenetic analyses of Flabellinoidea, Fionoidea and Aeolidioidea, with branches collapsed for clarity. The phylogenetic position of the species described herein (in bold) are represented in grey ovals. Posterior probability and maximum likelihood bootstrap values indicated for each branch.
FIGURE 13 in Five new deep-sea species of nudibranchs (Gastropoda: Heterobranchia: Cladobranchia) from the Northeast Pacific
FIGURE 13. SEMs of the radula and jaws of the paratype of Ziminella vrijenhoeki sp. nov. (SIO-BIC M12135). A. Jaw. B. Jaw masticatory border. C. Radular teeth. D. Lateral view of a radular tooth.
FIGURE 21 in Five new deep-sea species of nudibranchs (Gastropoda: Heterobranchia: Cladobranchia) from the Northeast Pacific
FIGURE 21. SEMs of the radula and jaws of a specimen of Zeusia herculea (Bergh, 1894) (SIO-BIC M12136). A. Jaw. B. Radular teeth.
FIGURE 12 in Five new deep-sea species of nudibranchs (Gastropoda: Heterobranchia: Cladobranchia) from the Northeast Pacific
FIGURE 12. Drawings of the internal anatomy of the paratype of Ziminella vrijenhoeki sp. nov. (SIO-BIC M12135). A. General view of the internal anatomy. B. Reproductive system. Abbreviations: am, ampulla; bb, buccal bulb; cns, central nervous system; dd, deferent duct; dg, digestive gland; es, esophagus; fgc, female gland complex; i, intestine; pe, penis; rm, retractor muscle.
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