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28 results for “Onchidium”
Figure 1. Onchidium typhae Buchannan, 1800 in New Distributional Records of Onchidiid Slugs from Coringa Wildlife Sanctuary, Andhra Pradesh
Figure 1. Onchidium typhae Buchannan, 1800; a) crawling animal in the mud, b) animal in the lab showing the long tentacles, c) the hyponotum and foot. Platevindex tigrinus (Stoliczka, 1869); d) animal on the trunk of the large Avicennia plant, e) animal in lab showing the papillae on the notum, f) hyponotum and foot.
Figure 6 from: Dayrat B, Goulding TC, Khalil M, Apte D, Tan SH (2019) A new species and new records of Onchidium slugs (Gastropoda, Euthyneura, Pulmonata, Onchidiidae) in South-East Asia. ZooKeys 892: 27-57. https://doi.org/10.3897/zookeys.892.39524
Figure 6 Live animals, Onchidium melakenseA dorsal view, holotype, 45 mm long [5979], Peninsular Malaysia (USMMC 00075) B dorsal view, 30 mm long [5978], Peninsular Malaysia (USMMC 00076) C dorsal view, 35 mm long [5981], Peninsular Malaysia (USMMC 00076) D dorsal view, 35 mm long [1769], Sumatra (UMIZ 00001) E ventral view, same as A F ventral view, same as C G dorsal view, 40 mm long [1771], Sumatra (UMIZ 00001).
Figure 3 from: Dayrat B, Goulding TC, Khalil M, Apte D, Tan SH (2019) A new species and new records of Onchidium slugs (Gastropoda, Euthyneura, Pulmonata, Onchidiidae) in South-East Asia. ZooKeys 892: 27-57. https://doi.org/10.3897/zookeys.892.39524
Figure 3 Diagram to help visualize pairwise genetic distances between COI sequences within and between Onchidium species (Table 2). Ranges of minimum to maximum distances are indicated (in percentages). For instance, the intra-specific divergences within O. typhae are between 0.1 and 0.4%, while the inter-specific divergences between O. typhae and the three other species are between 10.9 and 14.3%. Overall, the distance gap between all four Onchidium species is between 3.2 and 8.6%. The colors used for each Onchidium species are the same as those used in Figs 1, 2, and 4.
Figure 2 from: Dayrat B, Goulding TC, Khalil M, Apte D, Tan SH (2019) A new species and new records of Onchidium slugs (Gastropoda, Euthyneura, Pulmonata, Onchidiidae) in South-East Asia. ZooKeys 892: 27-57. https://doi.org/10.3897/zookeys.892.39524
Figure 2 Consensus tree showing relationships between Onchidium individuals based on concatenated nuclear ITS2 and 28S sequences. Numbers by the nodes are the bootstrap values (Maximum Parsimony analysis); only significant numbers (> 50%) are indicated. All other sequences serve as outgroups. Information on specimens can be found in the lists of material examined and Table 1. The colors used for each Onchidium species are the same as those used in Figs 1, 3, and 4.
Figure 13 from: Dayrat B, Goulding TC, Khalil M, Apte D, Tan SH (2019) A new species and new records of Onchidium slugs (Gastropoda, Euthyneura, Pulmonata, Onchidiidae) in South-East Asia. ZooKeys 892: 27-57. https://doi.org/10.3897/zookeys.892.39524
Figure 13 Types of intestinal loops in the genus Onchidium. Small black arrows indicate the direction of the intestinal transport, which starts in the blue loop. A blue loop turns clockwise. A yellow loop turns counterclockwise. A green loop is transitional in between a blue loop and a yellow loop. The orientation of the transitional (green) loop is indicated with a red arrow. Details on individuals of O. reevesii, O. typhae, O. stuxbergi can be found in Dayrat et al. (2016)AO. typhae, type II with a transitional loop at 9 o'clock, [1007] BO. typhae, type II with a transitional loop at 8 o'clock (from Dayrat et al. 2016: fig. 5E) CO. stuxbergi, type III with a transitional loop at 3 o'clock (from Dayrat et al. 2016: fig. 11B) DO. stuxbergi, type III with a transitional loop at 1 o'clock, (PNM 041200) EO. stuxbergi, type III with a transitional loop at 8 o'clock, [5605] FO. reevesii, holotype, type III with a transitional loop at 2 o'clock (from Dayrat et al. 2016: fig. 14A) GO. melakense, type III with a transitional loop at 1 o'clock, holotype [5979] (USMMC 00075) HO. melakense, type III with a transitional loop at 5 o'clock, [5978] (USMMC 00076). Scale bars: 3 mm (A, H), 5 mm (B, C, E–G), 4 mm (D).
Figure 12 from: Dayrat B, Goulding TC, Khalil M, Apte D, Tan SH (2019) A new species and new records of Onchidium slugs (Gastropoda, Euthyneura, Pulmonata, Onchidiidae) in South-East Asia. ZooKeys 892: 27-57. https://doi.org/10.3897/zookeys.892.39524
Figure 12 Name-bearing types of Onchidium multinotatum and Onchidium pallidipesA digestive system, type III with a transitional loop at 2 o'clock (based on marks left by the intestine in the digestive gland), dorsal view, holotype, O. multinotatum (ZMB/Moll 240117) B digestive system, type III with a transitional loop at 2 o'clock, dorsal view, lectotype, O. pallidipes (NMNH 127328) C anterior, male, copulatory parts, lectotype, O. pallidipes (NMNH 127328). Abbreviations: ag accessory penial gland, dd deferent duct, ddg dorsal lobe of digestive gland, i intestine, pdg posterior lobe of the digestive gland, ps penial sheath, rg rectal gland, rm penial retractor muscle, st stomach, v vestibule. Scale bars: 3 mm (A, B), 2 mm (C).
Figure 11 from: Dayrat B, Goulding TC, Khalil M, Apte D, Tan SH (2019) A new species and new records of Onchidium slugs (Gastropoda, Euthyneura, Pulmonata, Onchidiidae) in South-East Asia. ZooKeys 892: 27-57. https://doi.org/10.3897/zookeys.892.39524
Figure 11 Male, anterior, copulatory parts, Onchidium melakenseA, C Sumatra, [1723] (UMIZ 00001) B, E, F Peninsular Malaysia, holotype [5979] (USMMC 00075) D, G, H Peninsular Malaysia, holotype [5982] (USMMC 00076) A stalk and penial hooks B penial hook C penial hooks D flat disc at distal end of flagellum of penial accessory gland (the arrow indicates the hole through which the hollow spine protrudes) E hollow spine F hollow spine tip G hollow spine H hollow spine tip. Scale bars: 300 μm (A), 10 μm (B, C, F), 100 μm (D, G, H), 200 μm (E).
Figure 10 from: Dayrat B, Goulding TC, Khalil M, Apte D, Tan SH (2019) A new species and new records of Onchidium slugs (Gastropoda, Euthyneura, Pulmonata, Onchidiidae) in South-East Asia. ZooKeys 892: 27-57. https://doi.org/10.3897/zookeys.892.39524
Figure 10 Reproductive system, Onchidium melakenseA, B Peninsular Malaysia, holotype [5979] (USMMC 00075) C Sumatra, [1723] (UMIZ 00001) A posterior, hermaphroditic, reproductive parts B anterior, male, copulatory parts C anterior, male, copulatory parts. Abbreviations: ag accessory penial gland, arm anterior penial retractor muscle, dd deferent duct, fgm female gland mass, hg hermaphroditic gland, ov oviduct, ps penial sheath, rm penial retractor muscle, rs receptaculum seminis, sp spermatheca, v vestibule. Scale bars: 4 mm (A), 5 mm (B), 2 mm (C).
Figure 5 from: Dayrat B, Goulding TC, Khalil M, Apte D, Tan SH (2019) A new species and new records of Onchidium slugs (Gastropoda, Euthyneura, Pulmonata, Onchidiidae) in South-East Asia. ZooKeys 892: 27-57. https://doi.org/10.3897/zookeys.892.39524
Figure 5 Habitats, Onchidium melakenseA type locality, Peninsular Malaysia, Kuala Sepatang, old forest with tall Rhizophora trees, high in the tidal zone (ferns), in educational mangrove preserve (st 258) B Sumatra, Pulau Sinaboi, mangrove forest with medium Rhizophora and Avicennia trees, dead logs, hard mud (st 73) C old log with crevices which O. melakense typically favors (st 73) D mangrove pit viper (arrow) resting by a log (st 73).
Figure 9 from: Dayrat B, Goulding TC, Khalil M, Apte D, Tan SH (2019) A new species and new records of Onchidium slugs (Gastropoda, Euthyneura, Pulmonata, Onchidiidae) in South-East Asia. ZooKeys 892: 27-57. https://doi.org/10.3897/zookeys.892.39524
Figure 9 Radula, Onchidium melakense, Sumatra (UMIZ 00001) A left, half rows, [1720] B rachidian and innermost lateral teeth, [1720] C lateral teeth, [1723] D outermost, lateral teeth, [1723]. Abbreviations: 1llt first left lateral tooth, 1rlt first right lateral tooth, 2llt second left lateral tooth, 2rlt second right lateral tooth, hlt hook of lateral tooth, lc lateral cusp of rachidian tooth, mc median cusp of rachidian tooth, rt rachidian tooth. Scale bars: 200 μm (A), 10 μm (B), 60 μm (C), 20 μm (D).
Figure 8 from: Dayrat B, Goulding TC, Khalil M, Apte D, Tan SH (2019) A new species and new records of Onchidium slugs (Gastropoda, Euthyneura, Pulmonata, Onchidiidae) in South-East Asia. ZooKeys 892: 27-57. https://doi.org/10.3897/zookeys.892.39524
Figure 8 Radula, Onchidium melakense, Peninsular Malaysia, holotype [5979] (USMMC 00075) A rachidian and innermost lateral teeth B right lateral teeth C right lateral teeth. Abbreviations: 1llt first left lateral tooth, 1rlt first right lateral tooth, bls basal lateral spine, hlt hook of lateral tooth, lc lateral cusp of rachidian tooth, mc median cusp of rachidian tooth, rt rachidian tooth. Scale bars: 10 μm (A,) 20 μm (B, C).
Figure 1 from: Dayrat B, Goulding TC, Khalil M, Apte D, Tan SH (2019) A new species and new records of Onchidium slugs (Gastropoda, Euthyneura, Pulmonata, Onchidiidae) in South-East Asia. ZooKeys 892: 27-57. https://doi.org/10.3897/zookeys.892.39524
Figure 1 Phylogenetic tree showing the relationships between Onchidium individuals based on mitochondrial COI and 16S DNA sequences. Numbers by the nodes are the bootstrap values (Maximum Likelihood analysis) and the posterior probabilities (Bayesian analysis); only significant numbers (> 65% and > 0.9) are indicated. All other sequences serve as outgroups. Information on specimens can be found in the lists of material examined and Table 1. The colors used for each Onchidium species are the same as those used in Figs 2–4.
Figure 4 from: Dayrat B, Goulding TC, Khalil M, Apte D, Tan SH (2019) A new species and new records of Onchidium slugs (Gastropoda, Euthyneura, Pulmonata, Onchidiidae) in South-East Asia. ZooKeys 892: 27-57. https://doi.org/10.3897/zookeys.892.39524
Figure 4 Geographic distribution of the four known Onchidium species. Dots correspond to known records. The colors used for each Onchidium species are the same as those used in Figs 1–3.
Figure 7 from: Dayrat B, Goulding TC, Khalil M, Apte D, Tan SH (2019) A new species and new records of Onchidium slugs (Gastropoda, Euthyneura, Pulmonata, Onchidiidae) in South-East Asia. ZooKeys 892: 27-57. https://doi.org/10.3897/zookeys.892.39524
Figure 7 External morphology and digestive system, Onchidium melakense, Peninsular Malaysia A–C holotype [5979] (USMMC 00075) D [5978] (USMMC 00076) A dorsal, anterior view B posterior, ventral view (dotted lines indicate where the foot was cut to show the anus) C digestive system, dorsal view D digestive system, dorsal view. Abbreviations: a anus, ddg dorsal lobe of digestive gland, f foot (pedal sole), fo female opening, h hyponotum, i intestine, mo male opening, ol oral lobe, ot ocular tentacle, p pneumostome, pdg posterior lobe of the digestive gland, ppg peripodial groove, rg rectal gland, st stomach, tp transversal protuberance (on oral lobe). Scale bars: 5 mm (A–C), 3 mm (D).
Figure 9 from: Dayrat B, Goulding TC, Apte D, Bhave V, Comendador J, Ngô XQ, Tan SK, Tan SH (2016) Integrative taxonomy of the genus Onchidium Buchannan, 1800 (Mollusca, Gastropoda, Pulmonata, Onchidiidae). ZooKeys 636: 1-40. https://doi.org/10.3897/zookeys.636.8879
Figure 9 - Habitats for Onchidium stuxbergi. A Malaysia, Kuala Sepatang, old forest with tall, old Rhizophora trees, high in the tidal zone (station 27) B Philippines, Bohol, mostly Nypa palms with Thalassina mounds (station 187) C Vietnam, Can Gio, open mangrove with large Avicennia trees, soft mud, some old logs (station 231) D Vietnam, Can Gio, hard mud with trees spread out by a small road and then a steep bank to the soft, deep mud (station 221).
Figure 6 from: Dayrat B, Goulding TC, Apte D, Bhave V, Comendador J, Ngô XQ, Tan SK, Tan SH (2016) Integrative taxonomy of the genus Onchidium Buchannan, 1800 (Mollusca, Gastropoda, Pulmonata, Onchidiidae). ZooKeys 636: 1-40. https://doi.org/10.3897/zookeys.636.8879
Figure 6 - Radula, Onchidium typhae, Malaysia, Matang (USMMC 00005, #1). A Outermost lateral teeth, scale bar 20 µm B Lateral teeth, scale bar 20 µm C Lateral teeth, inferior view, showing the additional outer spine of each tooth, scale bar 10 µm D Rachidian and innermost lateral teeth, scale bar 20 µm.
Figure 7 from: Dayrat B, Goulding TC, Apte D, Bhave V, Comendador J, Ngô XQ, Tan SK, Tan SH (2016) Integrative taxonomy of the genus Onchidium Buchannan, 1800 (Mollusca, Gastropoda, Pulmonata, Onchidiidae). ZooKeys 636: 1-40. https://doi.org/10.3897/zookeys.636.8879
Figure 7 - Nervous and reproductive systems, Onchidium typhae. A Nervous system, Malaysia, Langkawi Island, scale bar 3.8 mm (USMMC 00002, #1) B Hermaphroditic (female), posterior parts, Singapore, scale bar 3.8 mm (ZRC.MOL.6397, #1) C Male, anterior, copulatory parts, Malaysia, Matang, scale bar 5 mm (USMMC 00005, #1) D Male, anterior, copulatory parts, Malaysia, Matang, scale bar 2.7 mm (USMMC 00005, #2). Abbreviations: agf, accessory gland flagellum; dd, deferent duct; fgm, female gland mass; hd, hermaphroditic duct; hg, hermaphroditic gland; lcg, left cerebral ganglion; lpg, left pedal ganglion; lplg, left pleural ganglion; ov, oviduct; ps, penial sheath; rcg, right cerebral ganglion; rm, retractor muscle; rpg, right pedal ganglion; rplg, right pleural ganglion; rs, receptaculum seminis; sp, spermatheca; spv, spermoviduct; v, vestibule; vg, visceral ganglion.
Figure 8 from: Dayrat B, Goulding TC, Apte D, Bhave V, Comendador J, Ngô XQ, Tan SK, Tan SH (2016) Integrative taxonomy of the genus Onchidium Buchannan, 1800 (Mollusca, Gastropoda, Pulmonata, Onchidiidae). ZooKeys 636: 1-40. https://doi.org/10.3897/zookeys.636.8879
Figure 8 - Male, anterior, copulatory parts, Onchidium typhae. A Penial hooks, Malaysia, Matang, scale bar 30 µm (USMMC 00005, #1) B Flat disc at distal end of flagellum of penial accessory gland, Malaysia, Langkawi Island, scale bar 100 µm (USMMC 00002, #1) C Tip of hollow spine, penial accessory gland, Singapore, scale bar 4 µm (ZRC.MOL.6397, #1) D Detail of B, scale bar 20 µm (USMMC 00002, #1) E Hollow spine, penial accessory gland, Singapore, scale bar 100 µm (ZRC.MOL.6397, #1) F Hollow spine, penial accessory gland, Malaysia, Langkawi Island, scale bar 100 µm (USMMC 00002, #1).
Figure 4 from: Dayrat B, Goulding TC, Apte D, Bhave V, Comendador J, Ngô XQ, Tan SK, Tan SH (2016) Integrative taxonomy of the genus Onchidium Buchannan, 1800 (Mollusca, Gastropoda, Pulmonata, Onchidiidae). ZooKeys 636: 1-40. https://doi.org/10.3897/zookeys.636.8879
Figure 4 - Live specimens, Onchidium typhae. A Dorsal view, 45 mm long, India, West Bengal, station 48 (BNHS) B Dorsal view, 55 mm long, India, Andaman Islands, station 57 (BNHS) C Dorsal view, 40 mm long, Singapore (ZRC.MOL.6396) D Frontal view, 25 mm wide, India, Andaman Islands, station 57 (BNHS) E Ventral view, 50 mm long, India, Andaman Islands, station 59 (BNHS) F Ventral view, 40 mm long [DNA 1064], India, West Bengal, station 49 (BNHS) G Dorso-lateral view, 40 mm long, India, Andaman Islands, station 59 (BNHS) H Dorsal view, 42 mm long, Malaysia, Matang (USMMC 00005, #1).
Figure 5 from: Dayrat B, Goulding TC, Apte D, Bhave V, Comendador J, Ngô XQ, Tan SK, Tan SH (2016) Integrative taxonomy of the genus Onchidium Buchannan, 1800 (Mollusca, Gastropoda, Pulmonata, Onchidiidae). ZooKeys 636: 1-40. https://doi.org/10.3897/zookeys.636.8879
Figure 5 - External morphology and digestive system, Onchidium typhae. A Anterior region, ventral view, Singapore, scale bar 8 mm (ZRC.MOL.6396) B Posterior region, ventral view, Singapore, scale bar 7 mm (ZRC.MOL.6396) C Dorsal papillae (preserved), Singapore, station 8, scale bar 3.8 mm (ZRC.MOL.6396) D Buccal gland, Malaysia, Langkawi Island, scale bar 3 mm (USMMC 00002, #1) E Digestive system, dorsal view, Singapore, scale bar 5 mm (ZRC.MOL.6397, #1) F Digestive system, ventral view, Singapore, scale bar 5 mm (ZRC.MOL.6397, #1) G Stomach (digestive gland removed), ventral view, Singapore, scale bar 5 mm (ZRC.MOL.6397, #1). Abbreviations: ddg, dorsal lobe of digestive gland; e, esophagus; i, intestine; ldg, lateral lobe of the digestive gland; pdg, posterior lobe of the digestive gland; rg, rectal gland; st1, stomach chamber 1; st2, stomach chamber 2; st3, stomach chamber 3; st4, stomach chamber 4.
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