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939 results for “Nudibranchia”
Fig. 3 in Dendrodorididae (Heterobranchia, Nudibranchia) from Persian Gulf with a description of a new species of Doriopsilla and remarks on the family
Fig. 3. Histological cross sections of epidermis, digestive system, and part of the genital system of Dendrodoris nigra (W. Stimpson, 1855). A. Mantle. B. Head area with parts of the digestive system; the oral tube is marked with a star. C. Section behind the head region with parts of the genital system. D. Stomach with folded wall (arrow). E. Intestine. F. Ampulla. Abbreviations: Am = Ampulla; E = Empty unicellular gland; Ep = Epithelium; G = glandular vesicle with mucopolysaccharides (stained violet); LD = Labial disc; Oe = Oesophagus; Ph = Pharynx; Sgl = Salivary gland; Vgl = Vestibular gland; Rs = Receptaculum seminis.
Fig. 7 a–d in Revealing morphological characteristics of Goniodorididae genera (Mollusca: Nudibranchia)
Fig. 7 a–d Scanning electron micrographs of Goniodoridella savignyi Pruvot-Fol, 1933 (QMMO 85914) and e–h scanning electron micrographs of Murphydoris singaporensis Sigurdsson, 1991 (ZRC. MOL.15663c). a Labial cuticle. b Frontal view of rachis and internal and external teeth. c Detail of external teeth from side view. d Penial spines. e Frontal view of radula. f Frontal view of rachis and internal and external teeth. g Detail of internal teeth. h Penial spines. Scale bars: a 5 µm. b 50 µm. c 30 µm. d 20 µm. e 200 µm. f 50 µm. g 30 µm. h 50 µm
Fig. 5 Spicule patterns using microcomputed tomography. a in Revealing morphological characteristics of Goniodorididae genera (Mollusca: Nudibranchia)
Fig. 5 Spicule patterns using microcomputed tomography. a Lateral view of Goniodoris nodosa (Montagu, 1808) (MNCN 15.05/92160). b Detail of anterior dorsal spicules of G. nodosa (MNCN 15.05/92160). c Ventral view of G. nodosa (MNCN 15.05/92160). d Lateral view of Goniodoridella savignyi Pruvot-Fol, 1933 (QMMO 85,916). e Dorsal view of G. savignyi (QMMO 85,916). f Ventral view of G. savignyi (QMMO 85,916). Scale bars: a–c 250 µm. d–f 100 µm
Fig. 3 in Revealing morphological characteristics of Goniodorididae genera (Mollusca: Nudibranchia)
Fig. 3 Scanning electron micrographs of a–d Okenia elegans (Leuckart, 1828) (MNCN 15.05/88175) and e–h Goniodoris nodosa (Montagu, 1808). a Detail of jaw elements. b Frontal view of rachis and internal and external teeth. c Detail of internal and external teeth. d Penial spines. e Detail of cuticle elements (ZMBN 130629). f Frontal view of rachis and internal and external teeth (ZMBN 130629). g Detail of internal teeth (ZMBN 130629). h Penial spines (MNCN 15.05/92161). Scale bars: a 100 µm. b 300 µm. c 100 µm. d 200 µm. e 30 µm. f 300 µm. g 100 µm. h 50 µm
Figures 5-12 from: Lima POV, Simone LRL (2018) Complementary anatomy of Actinocyclus verrucosus (Nudibranchia, Doridoidea, Actinocyclidae) from Indo-Pacific. Zoosystematics and Evolution 94(2): 237-246. https://doi.org/10.3897/zse.94.14518
Figures 5-12 Anatomical details of Actinocyclus verrucosus. 5. Rhinophore extracted, ventral view, scale: 0.5 mm. 6. Same dorsal view, scale: 0.5 mm. 7. Same, transverse section, scale: 0.5 mm. 8. Gill circle with retractor muscle, dorsal view, scale: 1 mm. 9. Detail of gill filament, scale: 1 mm. 10. Detail of circulatory system (structures of pericardium), ventral view, scale: 2 mm. 11. Extracted visceral mass, dorsal view, scale: 2 mm. 12. Same, ventral view, scale: 2 mm.
Figures 22-27 from: Lima POV, Simone LRL (2018) Complementary anatomy of Actinocyclus verrucosus (Nudibranchia, Doridoidea, Actinocyclidae) from Indo-Pacific. Zoosystematics and Evolution 94(2): 237-246. https://doi.org/10.3897/zse.94.14518
Figures 22-27 Actinocyclus verrucosus reproductive system. 22. Dorsal whole view, most structures uncoiled, scale: 1 mm. 23. Same, ventral view, scale: 1 mm. 24. Detail of uncoiled female structures, dorsal view, scale: 1 mm. 25–27. Central nervous system. 25. Dorsal view, scale: 1 mm. 26. Ventral view, scale: 1 mm. 27. Detail of buccal and gastroesophageal ganglia, ventral view, scale: 0.5 mm.
Figures 1-4 from: Lima POV, Simone LRL (2018) Complementary anatomy of Actinocyclus verrucosus (Nudibranchia, Doridoidea, Actinocyclidae) from Indo-Pacific. Zoosystematics and Evolution 94(2): 237-246. https://doi.org/10.3897/zse.94.14518
Figures 1-4 External morphology of Actinocyclus verrucosus. 1. Whole dorsal view, scale: 5 mm. 2. Whole ventral view, scale: 5 mm. 3. Whole right lateral view, scale: 5 mm. 4. Detail of anterior border of foot, ventral view, scale: 2 mm.
Figures 28-31 from: Lima POV, Simone LRL (2018) Complementary anatomy of Actinocyclus verrucosus (Nudibranchia, Doridoidea, Actinocyclidae) from Indo-Pacific. Zoosystematics and Evolution 94(2): 237-246. https://doi.org/10.3897/zse.94.14518
Figures 28-31 Actinocyclus verrucosus, radula in SEM. 28. Panoramic view, scale: 100 µm. 29. higher magnification in central region, scale: 40 µm. 30. Outer lateral teeth, scale: 10 µm. 31. Detail of marginal teeth tip, scale: 10 µm.
Figures 13-21 from: Lima POV, Simone LRL (2018) Complementary anatomy of Actinocyclus verrucosus (Nudibranchia, Doridoidea, Actinocyclidae) from Indo-Pacific. Zoosystematics and Evolution 94(2): 237-246. https://doi.org/10.3897/zse.94.14518
Figures 13-21 Actinocyclus verrucosus details of digestive system. 13. Foregut and nerve ring, ventral view, some adjacent structures also shown as in situ, scale: 1 mm. 14. Same dorsal view, scale: 1 mm. 15. Same, longitudinally sectioned, showing internal oral tube, dorsal view, scale: 1 mm. 16–20. Odontophore anatomy, scales: 1 mm. 16. Whole ventral view, sphincter removed. 17. Whole dorsal view, esophagus removed. 18. Dorsal view, radula removed, each cartilage slightly deflected. 19. Whole right view. 20. Ventral view, m4 and m5 folded down to expose odontophore cartilage; m7 and m7a removed. 21. Midgut as in situ, dorsal view, scale: 2 mm.
Figure 6 from: Yonow N (2018) Red Sea Opisthobranchia 5: new species and new records of chromodorids from the Red Sea (Heterobranchia, Nudibranchia, Chromodorididae). ZooKeys 770: 9-42. https://doi.org/10.3897/zookeys.770.26378
Figure 6 Miamira magnifica Eliot, 1910 A ventral view of whole specimen B midline area from the anterior portion of the radula C lateral teeth from the anterior section of the radula D jaw rodlets.
Figure 2 from: Yonow N (2018) Red Sea Opisthobranchia 5: new species and new records of chromodorids from the Red Sea (Heterobranchia, Nudibranchia, Chromodorididae). ZooKeys 770: 9-42. https://doi.org/10.3897/zookeys.770.26378
Figure 2 Glossodoris kahlbrocki sp. n. A ventral view of anterior showing head, oral tentacles, and foot margin B midline area from the posterior portion of the radula C lateral teeth from the middle section of the radula D jaw rodlets.
Figure 1 from: Yonow N (2018) Red Sea Opisthobranchia 5: new species and new records of chromodorids from the Red Sea (Heterobranchia, Nudibranchia, Chromodorididae). ZooKeys 770: 9-42. https://doi.org/10.3897/zookeys.770.26378
Figure 1 Doriprismatica kyanomarginata sp. n. A ventral view of whole specimen showing colours of the preserved specimen, including the anterior section of the mantle margin B midline area from the anterior portion of the radula C lateral teeth from the posterior section of the radula D jaw rodlets.
Figure 4 from: Yonow N (2018) Red Sea Opisthobranchia 5: new species and new records of chromodorids from the Red Sea (Heterobranchia, Nudibranchia, Chromodorididae). ZooKeys 770: 9-42. https://doi.org/10.3897/zookeys.770.26378
Figure 4 Goniobranchus pseudodecorus sp. n. A ventral view of anterior showing head, oral tentacles, and foot margin B midline area from the anterior portion of the radula C lateral teeth from the anterior section of the radula D jaw rodlets.
Figure 3 from: Yonow N (2018) Red Sea Opisthobranchia 5: new species and new records of chromodorids from the Red Sea (Heterobranchia, Nudibranchia, Chromodorididae). ZooKeys 770: 9-42. https://doi.org/10.3897/zookeys.770.26378
Figure 3 Goniobranchus collingwoodi (Rudman, 1987) ventral view of anterior showing head, oral tentacles, and foot margin.
Figure 5 from: Yonow N (2018) Red Sea Opisthobranchia 5: new species and new records of chromodorids from the Red Sea (Heterobranchia, Nudibranchia, Chromodorididae). ZooKeys 770: 9-42. https://doi.org/10.3897/zookeys.770.26378
Figure 5 Hypselodoris dollfusi (Pruvot-Fol, 1933) A ventral view of the whole specimen showing head, oral tentacles, and deep hyponotum with raised spots B midline area from the anterior portion of the radula C lateral teeth from the posterior portion of the radula D lateral teeth from the middle section of the radula E jaw rodlets.
Figure 1 from: Martynov A, Mehrotra R, Chavanich S, Nakano R, Kashio S, Lundin K, Picton B, Korshunova T (2019) The extraordinary genus Myja is not a tergipedid, but related to the Facelinidae s. str. with the addition of two new species from Japan (Mollusca, Nudibranchia). ZooKeys 818: 89-116. https://doi.org/10.3897/zookeys.818.30477
Figure 1 Comparison of Myjalongicornis Bergh, 1896 with other aeolidacean taxa that have been proposed to have relationships with it (Calma, Tergipes) and which are covered by present analysis [type species of the genus Facelina, F.auriculata (Müller, 1776)]. A–HMyjacf.longicornis from Thailand, living animal ca. 10 mm in length A dorsal view of hydroids in situ B lateral view of hydroids in situ (left), egg mass on the hydroid (right) C details of cerata D smooth masticatory processes of jaws (indicated by arrows), SEM E pharynx, dissected dorsally to show very narrow radula (indicated by an arrow), LM F whole radula, SEM G anteriormost part of radula to show sacoglossan-like small knife-shaped teeth, SEM H teeth from the middle part of radula, SEM; I, JMyjalongicornis Bergh, 1896 external view and radula (anterior part), reproduced from the first description by Bergh (1896); K–OFacelinaauriculata jaws and radula of a specimen from UK, collected together with neotype K masticatory process (well-defined denticles indicated by arrow), SEM L radula (arrow) on odontophore, to show that anteriormost teeth are not reduced, LM M anterior part of radula to show that teeth are not reduced N anteriormost tooth of radula O two anterior teeth of radula P radula (middle part) of Calmaglaucoides (Alder & Hancock, 1854) from Norway Q radula (middle part) Tergipestergipes (Forsskål in Niebuhr, 1775). Scale bars: 20 μm (D, N, O, Q); 50 μm (F, K); 10 μm (G, P); 5 μm (H); 100 μm (M). Photographs of living specimens by Chanon Ngernthongdee and Siwat Worachananant, SEM images by AV Martynov. Figures I and J are reproduced from Bergh (1896), the publication not currently under copyright.
Figure 4 from: Martynov A, Mehrotra R, Chavanich S, Nakano R, Kashio S, Lundin K, Picton B, Korshunova T (2019) The extraordinary genus Myja is not a tergipedid, but related to the Facelinidae s. str. with the addition of two new species from Japan (Mollusca, Nudibranchia). ZooKeys 818: 89-116. https://doi.org/10.3897/zookeys.818.30477
Figure 4 Reproductive systems of new species of the genus Myja. AMyjacf.longicornisBMyjakarin sp. n. CMyjahyotan sp. n. Abbreviations: am – ampulla; fgm – female gland mass; fo – female opening; p – penis; psh – penial sheath; rsp – proximal receptaculum seminis; vd – vas deferens.
Figure 3 from: Martynov A, Mehrotra R, Chavanich S, Nakano R, Kashio S, Lundin K, Picton B, Korshunova T (2019) The extraordinary genus Myja is not a tergipedid, but related to the Facelinidae s. str. with the addition of two new species from Japan (Mollusca, Nudibranchia). ZooKeys 818: 89-116. https://doi.org/10.3897/zookeys.818.30477
Figure 3 Myjahyotan sp. n., holotype. A dorsal view B ventral view C lateral view D details of cerata E dorsal view on hydroids in situ F jaw G smooth masticatory processes of jaws (indicated by arrows), SEM H radula on odontophore, to show reduced anteriormost teeth (arrow), LM I anterior teeth with strongly reduced anteriormost teeth, SEM J teeth from the middle part of radula K posterior part of radula to show smooth teeth. Scale bars: 100 μm (F); 50 μm (G, I); 10 μm (J, K). Photographs of living specimens by TA Korshunova and AV Martynov, SEM images by AV Martynov.
Figure 2 from: Martynov A, Mehrotra R, Chavanich S, Nakano R, Kashio S, Lundin K, Picton B, Korshunova T (2019) The extraordinary genus Myja is not a tergipedid, but related to the Facelinidae s. str. with the addition of two new species from Japan (Mollusca, Nudibranchia). ZooKeys 818: 89-116. https://doi.org/10.3897/zookeys.818.30477
Figure 2 Myjakarin sp. n. A–D holotype A dorsal view B ventral view C lateral view D animal with egg mass E details of cerata F lateral view on hydroids in situ G, H veligers; I–N paratype I jaws J smooth masticatory processes of jaws (inidicated by arrows), SEM K radula on odontophore, to show narrow teeth and reduced anteriormost teeth (arrow), LM L whole radula, SEM M teeth from the middle part of radula N anterior teeth. Scale bars: 100 μm (I); 50 μm (J, L); 10 μm (M); 5 μm (N). Photographs of living specimens by TA Korshunova and AV Martynov, SEM images by AV Martynov.
Figure 5 from: Martynov A, Mehrotra R, Chavanich S, Nakano R, Kashio S, Lundin K, Picton B, Korshunova T (2019) The extraordinary genus Myja is not a tergipedid, but related to the Facelinidae s. str. with the addition of two new species from Japan (Mollusca, Nudibranchia). ZooKeys 818: 89-116. https://doi.org/10.3897/zookeys.818.30477
Figure 5 Phylogenetic tree of aeolidacean nudibranchs based on concatenated molecular data (COI + 16S + H3) represented by Bayesian Inference (BI). Numbers above branches represent posterior probabilities from Bayesian Inference. Numbers below branches indicate bootstrap values for Maximum Likelihood. The key clades and illustrated taxa are highlighted in colour. Two taxa with highly convergent external morphology but very distantly related according to the molecular analysis, the Tergipedidae and the genus Myja, are connected by a dotted red line. Neotype ZMMU Op-669 of Facelinaauriculata (Müller, 1776) is illustrated on the tree (photograph BE Picton).
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