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166 results for “Sacoglossa”
Fig. 2 in Placida babai (Mollusca: Gastropoda: Sacoglossa) from Russian waters of the Sea of Japan
Fig. 2. Live animals: A, D – Placida babai, Sakhalin Isl.; B, E – P. dendritica, White Sea; C – P. cf. dendritica, California; radulae: F, G – P. dendritica, White Sea; H, I – P. cf. dendritica, California; J, K – P. babai, Sakhalin Isl.; L – P. babai, Vostok Bay. Scale bars: A–E – 5 mm; F–I, K – 40 µm; J, L – 20 µm.
Fig. 3. Unrooted cytochrome oxydase subunit 1 in Placida babai (Mollusca: Gastropoda: Sacoglossa) from Russian waters of the Sea of Japan
Fig. 3. Unrooted cytochrome oxydase subunit 1 NJ gene tree built using p-distances. Bootstrap support values (1000 replications) are marked at the internodes.
Fig. 2 - A in Short communication No longer so common: findings of Calliopaea bellula d'Orbigny 1837 (Gastropoda: Sacoglossa) and Tayuva lilacina (A. Gould 1852) (Gastropoda: Nudibranchia) along the central-eastern coast of Sicily (Ionian Sea)
Fig. 2 - A) The Calliopaea bellula specimen in anterodorsal view. B) Right laterodorsal view. C) Dorsal view. D) Left laterodorsal view. E) The individual on its substrate. (Photos by G. Marletta). / A) L'esemplare di Calliopaea bellula in visione antero-dorsale. B) Visione laterodorsale destra. C) Visione dorsale. D) Visione laterodorsale sinistra. E) L'individuo sul suo substrato. (Foto di G. Marletta).
Fig. 1 in Short communication No longer so common: findings of Calliopaea bellula d'Orbigny 1837 (Gastropoda: Sacoglossa) and Tayuva lilacina (A. Gould 1852) (Gastropoda: Nudibranchia) along the central-eastern coast of Sicily (Ionian Sea)
Fig. 1 - Italian Peninsula's map showing the reports of the two discussed species. The reports of Calliopaea bellula are green coloured, while those of Tayuva lilacina are pink coloured. Each report is joined with the corresponding reference/s. / Mappa della Penisola Italiana che mostra le segnalazioni delle due specie discusse. I ritrovamenti di Calliopaea bellula sono colorati in verde, mentre quelli di Tayuva lilacina sono colorati di rosa. Ogni segnalazione è accompagnata dai corrispondenti riferimenti bibliografici.
Fig. 3 - A in Short communication No longer so common: findings of Calliopaea bellula d'Orbigny 1837 (Gastropoda: Sacoglossa) and Tayuva lilacina (A. Gould 1852) (Gastropoda: Nudibranchia) along the central-eastern coast of Sicily (Ionian Sea)
Fig. 3 - A) The Tayuva lilacina specimen in dorsal view. B) Right anterodorsal view. C) Dorsal view. D) The individual in extension. E) The ventral part of the body. F) The animal with the knurled appearance. (Photos by A. Lombardo). / A) L'esemplare di Tayuva lilacina in visione dorsale. B) Visione antero-dorsale destra. C) Visione dorsale. D) L'individuo in estensione. E) La parte ventrale del corpo. F) L'animale con l'aspetto zigrinato. (Foto di A. Lombardo).
Fig. 3 in A new genus Swennenia for Gascoignella jabae Swennen, 2001, a small rare mangrove dwelling sea slug in the Gulf of Thailand, with notes on the species (Gastropoda: Sacoglossa: Plakobranchoidea)
Fig. 3. Drawings of Swennenia jabae (Swennen, 2001). A, dorsal view of animal with important parts indicated; B, pharynx; C, eye; D, penis; E, teeth; F, diagram of digestive system; G, diagram of reproductive system. Abbreviations: ad, albumen duct; ag, albumen gland; an, anus; as, ascus; cc, central canal; cg, capsule gland; dg, digestive gland; ey, eye; ga, ganglion; gr, genital receptacle; hd, hermaphrodite duct; hg, hermaphrodite follicles; in, intestine; lo, large oviduct; ma, male aperture; mu, mucus gland; oa, oviducal aperture; oe, oesophagus; ph, pharynx; pr, prostate; ps, penis style; rp, renal pore; sr, seminal receptacle; st, stomach; te, teeth; va, vagina aperture; vd, vas deferens;?, indeterminate gland.
Fig. 4 in A new genus Swennenia for Gascoignella jabae Swennen, 2001, a small rare mangrove dwelling sea slug in the Gulf of Thailand, with notes on the species (Gastropoda: Sacoglossa: Plakobranchoidea)
Fig. 4. Internal organs of Swennenia jabae. A, pericardium; B, dorsal view of the body with the skin removed to show the hermaphrodite follicles and septum; C, dorsal view with the skin and internal organs removed to show the septum; D, penial style; E, hermaphrodite follicles; F, position of digestive gland, hermaphrodite follicles, and albumen gland. Abbreviations: ag, albumen gland; dg, digestive gland; ey, eye; h, heart; hf, hermaphrodite follicles; in, intestine; ki, kidney; se, septum.
Fig. 2 in A new genus Swennenia for Gascoignella jabae Swennen, 2001, a small rare mangrove dwelling sea slug in the Gulf of Thailand, with notes on the species (Gastropoda: Sacoglossa: Plakobranchoidea)
Fig. 2. Swennenia jabae (Swennen, 2001), total length including cerata ca. 6 mm, from Pattani Bay photographed in the lab. A, slight dorso-lateral view; B, dorsal view.
Fig. 1. A in A new genus Swennenia for Gascoignella jabae Swennen, 2001, a small rare mangrove dwelling sea slug in the Gulf of Thailand, with notes on the species (Gastropoda: Sacoglossa: Plakobranchoidea)
Fig. 1. A, natural habitat in Pattani, Thailand, with mat of the algae Boodleopsis cf. pusilla, amongst pneumatophores in the mangroves; B, clay blocks cut out of the ground.
Fig. 6 in A new genus Swennenia for Gascoignella jabae Swennen, 2001, a small rare mangrove dwelling sea slug in the Gulf of Thailand, with notes on the species (Gastropoda: Sacoglossa: Plakobranchoidea)
Fig. 6. Egg mass and embryos of Swennenia jabae. A, egg string; B, closer view of egg string showing individual capsules; C, veligers about to hatch on 4th day.
Fig. 5 in A new genus Swennenia for Gascoignella jabae Swennen, 2001, a small rare mangrove dwelling sea slug in the Gulf of Thailand, with notes on the species (Gastropoda: Sacoglossa: Plakobranchoidea)
Fig. 5. Dorsal view of animal. A, faeces being expelled in thin strings from the anus (total length including cerata ca. 5.5 mm); B, animal with new ceras being regenerated (total length including cerata ca. 3 mm).
Fig. 2 in Aiteng Ater, New Genus, New Species, An Amphibious And Insectivorous Sea Slug That Is Difficult To Classify [Mollusca: Gastropoda: Opisthobranchia: Sacoglossa(?): Aitengidae, New Family]
Fig. 2. Aiteng ater, new species: A, dorsal view of slug, length 9 mm, in rest; B, ventral view of slug in rest against glass; C, lateral view of creeping slug, length 11 mm; D, diagram of digestive system in dorsal view; E, dorsal vessels; F, pharynx, length 900 µm; G, diagram of the genital complex in dorsal view; H, radular teeth of two specimens. Legend: ag − albumen gland; al − ascending limb of radula; am − ampulla; as − ascus;bw − body wall; cg − capsule gland; dg − digestive gland; dl − descending limb of radula; dv − dorsal vessels; (fa) − position of female aperture hidden under free notum border; fa − female aperture; fb − foot border; fg − foot groove; hd − hermaphrodite duct; in − intestine; ma − male aperture; mg − mucus gland; mo − mouth; nb − notum border; oe − oesophagus; pc − renopericardium; ph − pharynx; pr − prostate; ps − penis sack; sd − salivary duct; sg − area of salivary follicles; so − short oviduct; sr − seminal receptacle; st − stomach; vd − vas deferens; ve − velum.
Fig. 1 in Aiteng Ater, New Genus, New Species, An Amphibious And Insectivorous Sea Slug That Is Difficult To Classify [Mollusca: Gastropoda: Opisthobranchia: Sacoglossa(?): Aitengidae, New Family]
Fig. 1. Aiteng ater, new species: A, photo of a wayang (shadow puppet) and of a statue of Ai Theng at a shop near Pak Phanang; B, creeping adult specimen length 9.0 mm in lab; C, creeping young slug length 2.0 mm; D, young slug curled up length 2.1 mm; E, nerve ring, width of photo 170 µm; F, digestive tubes in ventral view in posterior part of body, width of photo 2600 µm; G, posterior lateral side of notum in dorsal view with skin largely removed showing digestive follicles and dorsal vessels; H, prostate dorsal view, width photo 270 µm; I, parasites around salivary follicles, ventral view; J, ventral view of albumen gland, ampulla, and follicles; K, eye; L, penis; M, lateral view of radular teeth. Legend: ag − albumen gland; am − ampulla; dg − digestive follicles; dt − digestive tubes; dv − dorsal vessels; ey − eye; fb − foot border; fo − follicles of ovotestis; nb − notum border; pa − parasite; ph − pharynx; pr − prostate; sg − salivary follicles; sr − seminal receptacle; st − stomach; ve −velum.
Fig. 5. Berthelinia singaporensis development. A–D in A fold in the visor: formation of the bivalved shell in Berthelinia singaporensis Jensen, 2015 (Gastropoda: Heterobranchia: Sacoglossa), with notes on spawning and development
Fig. 5. Berthelinia singaporensis development. A–D, SEM micrographs of larval shells of newly hatched veligers from different aspects, showing sinistral coiling, suture (C), and faint growth lines (C–D); E, SEM micrograph of larval operculum; F, light micrograph of newly hatched veliger larva showing the radula (circled).
Fig. 3 in A fold in the visor: formation of the bivalved shell in Berthelinia singaporensis Jensen, 2015 (Gastropoda: Heterobranchia: Sacoglossa), with notes on spawning and development
Fig. 3. Intra-capsular development of Berthelinia singaporensis. A, complete gastrula (day 3); B, early veliger, shell not coiled; velum visible (day 4); C, D, early veliger (day 5) with pigment along shell aperture and in suture; E, veliger larvae (day 6) with eyespots; F, large veliger larvae (day 10) with operculum (arrowhead) and foot (arrow).
Fig. 1 in A fold in the visor: formation of the bivalved shell in Berthelinia singaporensis Jensen, 2015 (Gastropoda: Heterobranchia: Sacoglossa), with notes on spawning and development
Fig. 1. Adult Berthelinia singaporensis, spawning and complete egg masses. A, specimen on Caulerpa racemosa; B, specimen crawling on petri-dish; C, D, specimen spawning. Notice head moving from side to side and opaque content of egg capsules during spawning (circled in D). E, complete egg mass on Caulerpa lentillifera; F, another egg mass with more developed embryos. Blue arrows indicate eggs moving inside oviduct through mucus gland; red arrowheads indicate eggs exiting female gonopore and being transported along spawn groove to mouth area.
Fig. 8 in A fold in the visor: formation of the bivalved shell in Berthelinia singaporensis Jensen, 2015 (Gastropoda: Heterobranchia: Sacoglossa), with notes on spawning and development
Fig. 8. Juvenile development of Berthelinia singaporensis. A–B, right side and dorsal view of late metamorphosis stage; right valve soft and smaller, hinge line complete; C–D, left and right view of early juvenile; right and left valves same size; E, larger juvenile on Caulerpa; F, larger juvenile with adult shell shape (taller anteriorly) and some brown pigment spots.
Fig. 11 in A fold in the visor: formation of the bivalved shell in Berthelinia singaporensis Jensen, 2015 (Gastropoda: Heterobranchia: Sacoglossa), with notes on spawning and development
Fig. 11. SEM micrographs of early juvenile Berthelinia singaporensis. A, right side view showing right valve smaller than left one; B, close-up of hinge line of same showing growth lines continuous across hinge line and right valve flatter than left one; C, left valve of older juvenile showing gap between protoconch aperture and juvenile shell; D, close-up of thickened hinge of same.
Fig. 2 in A fold in the visor: formation of the bivalved shell in Berthelinia singaporensis Jensen, 2015 (Gastropoda: Heterobranchia: Sacoglossa), with notes on spawning and development
Fig. 2. Early development of Berthelinia singaporensis embryos. A, uncleaved eggs; B, 2-cell stage; C, 2–4-cell stages (1 h); D, 4-cell stage (1 h 20 min); E, 8-cell stage (3 h); F, multi-cell stage (6 h); G, blastula (22 h); H, early gastrula (23 h). Times in parentheses are after first cell division. In E and F, the spiral cleavage pattern is distinct.
Fig. 4 in A fold in the visor: formation of the bivalved shell in Berthelinia singaporensis Jensen, 2015 (Gastropoda: Heterobranchia: Sacoglossa), with notes on spawning and development
Fig. 4. Hatched larvae of Berthelinia singaporensis. A, veliger larva shortly after hatching; large velar lobes with long cilia; B, newly hatched larva; long cilia on propodial margins as well as on velum; C, crawling veliger larva on Caulerpa (probably C. taxifolia); D, crawling larva from behind, with circular operculum (arrowhead).
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