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8,443 results for “gastropoda”
FIGURE 5 in Ontogeny as an important part of integrative taxonomy in tergipedid aeolidaceans (Gastropoda: Nudibranchia) with a description of a new genus and species from the Barents Sea
FIGURE 5. Haplotype network for Zelentia ninel gen. et sp. nov. and Z. pustulata (Alder et Hancock, 1854) comb. nov.
FIGURE 3 in Ontogeny as an important part of integrative taxonomy in tergipedid aeolidaceans (Gastropoda: Nudibranchia) with a description of a new genus and species from the Barents Sea
FIGURE 3. Zelentia ninel gen. et sp. nov. (A–H) and Z. pustulata (Alder et Hancock, 1854) comb. nov. (I–K). A, I. Laying of the different egg masses by Z. ninel sp. nov. and Z. pustulata respectively (specimens of both species from the same location, Barents Sea, Dalne-Zelenetskaya Bay); B. Living animal on hydroids with egg masses with small number of eggs. C. Zygotes; D. 64-128 blastomeres; E. Rudimentary veligers without formed shells. F. Hatching of shelless postlarvae directly from egg masses; G. Postlarva, lateral view; H. Postlarva, dorsal view; J. egg mass with numerous eggs; K. Normal veliger with welldefined shell. Photos: (A–J) Tatiana Korshunova, Alexander Martynov, (K) Lyudmila Flyachinskaya.
FIGURE 2 in Ontogeny as an important part of integrative taxonomy in tergipedid aeolidaceans (Gastropoda: Nudibranchia) with a description of a new genus and species from the Barents Sea
FIGURE 2. Zelentia pustulata (Alder et Hancock, 1854) comb. nov., A–B, ZMMU Op-512, living animal, 15 mm length, Barents Sea, Dalne-Zelenetskaya Bay, 12 m depth. A. Dorsal view; B. Ventral view; C. Living specimen, Strangford Lough, Irish Sea, 15-20 m; D. Living specimen, Achill Island, Ireland, 25 m; E. Living specimen, White Sea, Cape Kartesh, 15-20 m; F. radular teeth, anterior part, Barents Sea, SEM; G. radular teeth, anterior part, Ireland, SEM; H. radular teeth, anterior part, White Sea, SEM; I. Jaws; White sea; J. Masticatory processes of jaws, SEM; K. Living specimen on hydroid Halecium sp., White Sea. L. Penis with stylet, SEM. Scale bars: F–H—30 µm, J—10 µm, L—30 µm. Photos: (A-B, E, K) Tatiana Korshunova, Alexander Martynov, (C, D) Bernard Picton.
FIGURE 1 in Ontogeny as an important part of integrative taxonomy in tergipedid aeolidaceans (Gastropoda: Nudibranchia) with a description of a new genus and species from the Barents Sea
FIGURE 1. Zelentia ninel gen. et sp. nov., A–B, Holotype ZMMU Op-509, living animal, 6 mm length, Barents Sea, Dalne- Zelenetskaya Bay, intertidal. A. Dorsal view; B. Ventral view; C. Living specimen on hydroids with egg mass; D. Paratype, ZMMU Op-401, radular teeth, anterior part, SEM; E. Jaws, lateral view, SEM; F. Jaws, SEM; G. Masticatory processes of jaws, SEM. H. Penis with curved stylet, SEM. I, same, close up of stylet, SEM. Scale bars: D—10 µm, F—100 µm, G, I—10 µm, H—20 µm. Photos: Tatiana Korshunova, Alexander Martynov.
FIGURE 6 in Ontogeny as an important part of integrative taxonomy in tergipedid aeolidaceans (Gastropoda: Nudibranchia) with a description of a new genus and species from the Barents Sea
FIGURE 6. Ontogenetic integration of morphological data and molecular phylogeny implying a common ancestral ontogenetic cycle of the group of tergipedid-like families with veliger larva, earlier postlarval stages with oral veil and 1-2 cerata per side and adult stage with numerous cerata (more than six anterior ceratal rows), notal edge and cleioproctic/ pleuroproctic anus. Evolutionary derived disparate adult stages of the type species of the type genera of the families Trinchesiidae, Fionidae, Tergipedidae, Cuthonidae, Cuthonellidae, Calmidae and Eubranchidae respectively: A. Trinchesia caerulea (Montagu, 1804). B. Fiona pinnata (Eschscholtz, 1831). C. Tergipes tergipes (Forsskål in Niebuhr, 1775). D. Cuthona nana (Alder & Hancock, 1842). E. Cuthonella abyssicola Bergh, 1884. F. Calma glaucoides (Alder & Hancock, 1854). G. Eubranchus tricolor Forbes, 1838. I. Dorsal view. II. Ventral view, anterior part. III Radula, SEM. IV. Pharynx, jaws and central nervous system, lateral view. V. Male part of reproductive system. Abbreviations: LRE, lateral radular extension; LT, lateral teeth; ot, oral tentacle; p, penis; pg, "penial" (supplementary) gland; pr, prostate, vd, vas deferens. Scale bars: AIII—30 µm, BIII—50 µm, CIII, DIII—20µm, EIII—100 µm, GIII—100 µm, FIII—10 µm. Molecular phylogeny from Cella et al. (2016), graphically modified. All images by T.A. Korshunova and A.V. Martynov, except FI – by Bjørnar Nygård.
FIGURE 4. Reproductive systems. A in Ontogeny as an important part of integrative taxonomy in tergipedid aeolidaceans (Gastropoda: Nudibranchia) with a description of a new genus and species from the Barents Sea
FIGURE 4. Reproductive systems. A. Zelentia ninel gen. et sp. nov. B. Z. pustulata (Alder et Hancock, 1854). Abbreviations: a, ampulla; fgm, female gland mass; fo, female opening; p, penis; pg, "penial" (supplementary) gland; pr, prostate, r, receptaculum seminis. Scale bars: 0.5 mm.
FIGURE 68 in Revision of the Alycaeidae of China, Laos and Vietnam (Gastropoda: Cyclophoroidea) I: The genera Dicharax and Metalycaeus
FIGURE 68. Schematic diagram of cross sections of R2 of Dicharax and Metalycaeus species. The aperture opens leftwards. A. Dicharax bison Páll-Gergely & Hunyadi n. sp. B. Dicharax robustus Páll-Gergely & Hunyadi, n. sp. C. Dicharax fimbriatus (Bavay & Dautzenberg, 1912). D. Dicharax depressus (Bavay & Dautzenberg, 1912). E. Dicharax (?) alticola Páll- Gergely & Hunyadi n. sp. F. Dicharax (?) immaculatus Páll-Gergely n. sp. G. Dicharax (?) moellendorffi (Kobelt & Möllendorff, 1886). H. Metalycaeus muciferus (Heude, 1885). I. Metalycaeus oharai Páll-Gergely & Hunyadi n. sp. J. Metalycaeus (?) okuboi Páll-Gergely & Hunyadi, n. sp. Abbreviations: a: anterior crust; p: posterior crust; t: tunnel.
FIGURE 65 in Revision of the Alycaeidae of China, Laos and Vietnam (Gastropoda: Cyclophoroidea) I: The genera Dicharax and Metalycaeus
FIGURE 65. Opercula of Metalycaeus species. A–B. Metalycaeus rathouisianus (Heude, 1882) (MCZ 167209; syntype of Alycaeus dolomiticus). C–F. Metalycaeus (?) okuboi Páll-Gergely & Hunyadi, n. sp. (holotype, HNHM 99713). All images: B. Páll-Gergely.
FIGURE 62 in Revision of the Alycaeidae of China, Laos and Vietnam (Gastropoda: Cyclophoroidea) I: The genera Dicharax and Metalycaeus
FIGURE 62. Shells of Metalycaeus species. A. Metalycaeus oharai Páll-Gergely & Hunyadi n. sp. (holotype, HNHM 99712). B. Metalycaeus oharai, 20061015A (paratype), coll. PGB. C. Metalycaeus (?) okuboi Páll-Gergely & Hunyadi, n. sp. (holotype, HNHM 99713). D. Metalycaeus (?) okuboi, paratype (20050314A, coll. PGB). A Scale represents 5 mm. All photos: B. Páll-Gergely.
FIGURE 61 in Revision of the Alycaeidae of China, Laos and Vietnam (Gastropoda: Cyclophoroidea) I: The genera Dicharax and Metalycaeus
FIGURE 61. Protoconchs of Metalycaeus muciferus (Heude, 1885). A–B. 2013/7. C–D. syntype (MCZ 167230).
FIGURE 64. R2 in Revision of the Alycaeidae of China, Laos and Vietnam (Gastropoda: Cyclophoroidea) I: The genera Dicharax and Metalycaeus
FIGURE 64. R2 ribs of Metalycaeus (?) okuboi Páll-Gergely & Hunyadi, n. sp., 20050313A, coll. OKA. All images: B. Páll- Gergely.
FIGURE 58 in Revision of the Alycaeidae of China, Laos and Vietnam (Gastropoda: Cyclophoroidea) I: The genera Dicharax and Metalycaeus
FIGURE 58. Shells of Metalycaeus muciferus (Heude, 1885). A. syntype. B. 20070714B, coll. PGB. C. 2011/15, coll. HA. D. 2015/48, coll. HA. Note that the black "operculum" of Fig. D is the posterior end of a predator fly larva. Scale represents 5 mm. All photos: B. Páll-Gergely.
FIGURE 57 in Revision of the Alycaeidae of China, Laos and Vietnam (Gastropoda: Cyclophoroidea) I: The genera Dicharax and Metalycaeus
FIGURE 57. Distribution of Metalycaeus species. Empty diamond. Metalycaeus zayuensis (Zhang, Chen & Zhou, 2008). Filled triangle. Metalycaeus oharai Páll-Gergely & Hunyadi n. sp. Filled square. Metalycaeus (?) awalycaeoides Páll- Gergely & Hunyadi, n. sp. Circles. Metalycaeus muciferus (Heude, 1885). Empty triangle, top down. Metalycaeus laosensis n. sp. Empty circles indicate figured populations of Metalycaeus muciferus. 1. Tchen K'eou (Chengkou), the type locality of Alycaeus muciferus Heude, 1885. 2. Changyang (SMF 39254). 3. 2015/48. 4. 20070714B. 5. Pe-shang (type locality of Alycaeus helicodes Gredler, 1887). 6. 2013/7. 7. 2011/15.
FIGURE 56 in Revision of the Alycaeidae of China, Laos and Vietnam (Gastropoda: Cyclophoroidea) I: The genera Dicharax and Metalycaeus
FIGURE 56. Distribution of Metalycaeus species. Filled triangle, top up. Metalycaeus (?) okuboi Páll-Gergely & Hunyadi, n. sp. Empty triangle, top up. Metalycaeus (?) ibex Páll-Gergely & Hunyadi n. sp. Filled circle. Metalycaeus (?) libonensis (Chen, Li & Luo 2003). Empty circle. Metalycaeus latecostatus (Möllendorff, 1882). Empty square. Metalycaeus sinensis (Heude, 1882). Filled square. Metalycaeus rathouisianus (Heude, 1882).
FIGURE 54 in Revision of the Alycaeidae of China, Laos and Vietnam (Gastropoda: Cyclophoroidea) I: The genera Dicharax and Metalycaeus
FIGURE 54. Distribution of Metalycaeus heudei (Bavay & Dautzenberg, 1900). Empty circles indicate figured populations. 1. Badong (type locality of Chamalycaeus compressicosta Zilch, 1957). 2. 20100510B. 3. 2013/16. 4. 2013/4. 5. Mengzi (type locality of Alycaeus zhuangiyucuii Yang, Fan, Qiao & He, 2012). 6. Vn09-32. 7. Cuc Phuong National Park (type locality of Chamalycaeus fractus Varga, 1974). 8. MAA5.
FIGURE 53 in Revision of the Alycaeidae of China, Laos and Vietnam (Gastropoda: Cyclophoroidea) I: The genera Dicharax and Metalycaeus
FIGURE 53. Protoconchs of Metalycaeus species. A–B. Metalycaeus (?) okuboi Páll-Gergely & Hunyadi, n. sp. (holotype, HNHM 99713). C–D. Metalycaeus heudei (Bavay & Dautzenberg, 1900), 20030318B. All images: B. Páll-Gergely.
FIGURE 55 in Revision of the Alycaeidae of China, Laos and Vietnam (Gastropoda: Cyclophoroidea) I: The genera Dicharax and Metalycaeus
FIGURE 55. Shells of Metalycaeus species. A–C. Metalycaeus rathouisianus (Heude, 1882). A. syntype (SMF 39243) of M. rathouisianus. B. syntype (MCZ 167209) of Alycaeus dolomiticus Heude, 1890. C. MCZ 167222, labelled as Alycaeus neglectus Heude, 1886. D. Metalycaeus sinensis (Heude, 1882) (lectotype, MCZ 167216). E. Metalycaeus (?) ibex Páll- Gergely & Hunyadi n. sp., (holotype, MNHN IM-2012-27042). Scale represents 5 mm. All photos: B. Páll-Gergely.
FIGURE 52 in Revision of the Alycaeidae of China, Laos and Vietnam (Gastropoda: Cyclophoroidea) I: The genera Dicharax and Metalycaeus
FIGURE 52. Shells of Metalycaeus heudei (Bavay & Dautzenberg, 1900). A. holotype. B. MAA5. C. Vn09-32, coll. Hemmen. D. NHMUK 19991434. E. drawings of the holotype (HNHM 11916) of Chamalycaeus (Dicharax) fractus Varga, 1974. Scale represents 5 mm. Photos: B. Páll-Gergely (A–C) and H. Taylor (D).
FIGURE 51 in Revision of the Alycaeidae of China, Laos and Vietnam (Gastropoda: Cyclophoroidea) I: The genera Dicharax and Metalycaeus
FIGURE 51. Shells of Metalycaeus heudei (Bavay & Dautzenberg, 1900). A. holotype (MNHN IM-2012-27163) of Alycaeus paviei Bavay & Dautzenberg, 1912. B. Holotype (MNHN IM-2012-27164) of Alycaeus paviei var. minor Bavay & Dautzenberg, 1912. C. 2013/4, coll. HA. D. holotype of Alycaeus zhuangiyucuii. Scale represents 5 mm. All photos: B. Páll- Gergely, except for Fig. D. (photos from the original description, with permission form He Ying; note that the photos were taken using green background).
FIGURE 50 in Revision of the Alycaeidae of China, Laos and Vietnam (Gastropoda: Cyclophoroidea) I: The genera Dicharax and Metalycaeus
FIGURE 50. Shells of Metalycaeus heudei (Bavay & Dautzenberg, 1900). A. 2013/16, coll. HA. B. Holotype (SMF 158414) of Chamalycaeus (Dicharax) compressicosta Zilch, 1957. C. 20100510B, coll. OK. Scale represents 5 mm. All images: B. Páll-Gergely.
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OpenNeuro
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