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78 results for “Macrodasyida”
Fig. 8 in Marine Macrodasyida (Gastrotricha) from Hokkaido, Northern Japan
Fig. 8. Differential interference contrast photomicrographs of Turbanella lobata sp. nov., holotype (ICHUM 4982). A, Head and neck region; arrowhead indicates lateral lobe on the neck; B, mid-body region, showing oocytes and testes; C, caudal part, showing the arrangement of the posterior adhesive tubes (TbP).
Fig. 6 in Marine Macrodasyida (Gastrotricha) from Hokkaido, Northern Japan
Fig. 6. Turbanella cuspidata sp. nov. A, SEM image of head and neck region; arrowhead indicates projective organ, left anteroventral view, paratype ICHUM 4991. B–D, Differential interference contrast photomicrographs of holotype (ICHUM 4980); B, head and neck region, ventral view; C, mid-body region showing oocytes; D, caudal part, ventral view, showing medial caudal cone and arrangement of posterior adhesive tubes (TbP). Abbreviation: TbA, anterior adhesive tube.
Fig. 4 in Marine Macrodasyida (Gastrotricha) from Hokkaido, Northern Japan
Fig. 4. Maximum-likelihood tree (lnL=−37094.311007) showing phylogenetic relationships among Cephalodasys mahoae sp. nov. and 28 other macrodasyidans, inferred from concatenated 18S, 28S, and COI sequences. Xenotrichula intermedia and X. velox (Chaetonotida: Xenotrichulidae) represent the outgroup. The scale indicates branch length in number of substitutions per site. Numbers at nodes are bootstrap value and Bayesian posterior probability. Planodasyidae, Redudasyidae, Thaumastodermatidae, and Turbanellidae were recovered monophyletic, while Cephalodasyidae (shaded) was non-monophyletic.
Fig. 2 in Marine Macrodasyida (Gastrotricha) from Hokkaido, Northern Japan
Fig. 2. Cephalodasys mahoae sp. nov., line drawings of holotype (ICHUM 4977). A, Dorsal view showing the digestive and reproductive tracts, glands, adhesive tube, and tactile body ciliation; B, ventral view showing the adhesive tubes and locomotory ciliation. Abbreviations: TbA, anterior adhesive tube; TbP, posterior adhesive tube; TbVL, ventro-lateral adhesive tube.
Fig. 1 in Marine Macrodasyida (Gastrotricha) from Hokkaido, Northern Japan
Fig. 1. Map of Hokkaido, showing three sampling localities in this study: Ishikari, Mukawa, and Higashi-Shizunai.
Fig. 3 in Marine Macrodasyida (Gastrotricha) from Hokkaido, Northern Japan
Fig. 3. Differential interference contrast photomicrographs of Cephalodasys mahoae sp. nov. A, Subadult specimen from Ishikari beach, paratype ICHUM 497; B, subadult specimen from Mukawa (lost after being photographed), showing refractive granules at anterior and posterior ends of anterior intestine (indicated by arrowheads); C, anterior adhesive tube (TbA), subadult specimen from Ishikari beach, lost after observation; D, posterior region of body, showing three oocytes (arrowheads) developing from posterior to anterior; holotype (ICHUM 4977). Abbreviations: PhJIn, junction between pharynx and intestine; TbVL, ventro-lateral adhesive tube; TbP, posteior adhesive tube.
FIGURE 3 in A new species of Pseudostomella (Gastrotricha: Macrodasyida: Thaumastodermatidae) from a sandy beach of Kerala, India
FIGURE 3. Pseudostomella cheraensis sp. nov. – DIC optics - A, habitus, dorsal view; B, anterior end, dorsal view, showing the arrangement of the pentancres and papillae of the pre-buccal palps; C, anterior end, ventral view, showing the arrangement of the anterior adhesive tubes. Scale bars: A, 100 µm; B, C, 25 µm.
FIGURE 2 in A new species of Pseudostomella (Gastrotricha: Macrodasyida: Thaumastodermatidae) from a sandy beach of Kerala, India
FIGURE 2. Pseudostomella cheraensis sp. nov. – Drawing of the habitus as seen from the ventral side. Scale bar: 100 µm.
FIGURE 6. Tetranchyroderma korynetum n in Italian marine Gastrotricha: VI. Seven new species of Macrodasyida
FIGURE 6. Tetranchyroderma korynetum n. sp. A—dorsal, B—ventral views of an adult (Lt=300 µm, LPh=127 µm), and C—a pentancre with a separate scalebar, from Spiaggia d'Ischia Porto, Isola d'Ischia, Italy, dorsal with glands and the cuticular armature of pentancres shown on the right side; ventral with cuticular armature of pentancres shown on the left side, along with digestive and reproductive tracts, adhesive tubes and the ventral locomotor ciliary band.
FIGURE 3. Acanthodasys flabellicaudus n in Italian marine Gastrotricha: VI. Seven new species of Macrodasyida
FIGURE 3. Acanthodasys flabellicaudus n. sp. A—dorsal and B—ventral views of an adult (Lt=592 µm, LPh=158 µm); C—dorsal and D—ventral views of a subadult (Lt=428 µm, LPh=152 µm), both from Spiaggia degli Inglesi, Isola d'Ischia, Italy, dorsal with glands, adhesive tubes and the cuticular armature of uniancres (shown only on the left side as seen from below, (A) or just glands and tubes (C); ventral with digestive and reproductive tracts, and adhesive tubes (B) or with cuticular armature of uniancres shown on the side, along with digestive tract, adhesive tubes and the ventral locomotor ciliary patches (D). E—a uniancre with its separate scalebar.
FIGURE 2. Macrodasys digronus n in Italian marine Gastrotricha: VI. Seven new species of Macrodasyida
FIGURE 2. Macrodasys digronus n. sp. A—dorsal and B—ventral views of an adult (Lt=753 µm, LPh=310 µm), from Caorle W, Italy, dorsal with digestive and reproductive tracts; ventral with adhesive tubes and the ventral locomotor ciliary band.
FIGURE 5. Tetranchyroderma hyponiglarum n in Italian marine Gastrotricha: VI. Seven new species of Macrodasyida
FIGURE 5. Tetranchyroderma hyponiglarum n. sp. A—dorsal, B—ventral views of an adult (Lt=704 µm, LPh=130 µm), and C—a tetrancre with a separate scalebar, from Spiaggia d'Ischia Porto, Isola d'Ischia, Italy, dorsal with glands and the cuticular armature of tetrancres shown on the right side; ventral with cuticular armature of tetrancres shown on the left side, along with digestive and reproductive tracts, adhesive tubes and the ventral locomotor ciliary band.
FIGURE 1. Macrodasys acrosorus n in Italian marine Gastrotricha: VI. Seven new species of Macrodasyida
FIGURE 1. Macrodasys acrosorus n. sp. A—dorsal and B—ventral views of an adult (Lt=706 µm, LPh=250 µm), from Spiaggia d'Ischia Porto, Isola d'Ischia, Italy, dorsal with digestive and reproductive tracts; ventral with adhesive tubes and ventral locomotor ciliary bands.
FIGURE 7. Tetranchyroderma oligopentacrum n in Italian marine Gastrotricha: VI. Seven new species of Macrodasyida
FIGURE 7. Tetranchyroderma oligopentacrum n. sp. A—dorsal, B—ventral views of an adult (Lt=550 µm, LPh=148 µm), from Diano Marina, Italy, dorsal with glands and the cuticular armature shown as epaulets of 0, 2, 7 and 25 pentancres in the pharyngeal region, ventral with digestive and reproductive tracts, adhesive tubes and the ventral locomotor ciliary band. C—dorsal view showing a more complete covering of pentancres on both sides, D—dorsal and ventral views of a juvenile (Lt=167 µm, LPh=70 µm), from Diano Marina, Italy, and E—a pentancre with a separate scalebar.
FIGURE 4. Diplodasys sanctimariae n in Italian marine Gastrotricha: VI. Seven new species of Macrodasyida
FIGURE 4. Diplodasys sanctimariae n. sp. A—dorsal and B—ventral views of an adult (Lt=375 µm, LPh=97 µm) from Santa Maria di Leuca, Italy, dorsal with lateral spines and dorsal scales; ventral with digestive and reproductive tracts, locomotor ciliary bands, lateral spines and adhesive tubes. C—spine in longitudinal and cross-sectional views with its separate scalebar; D and D' dorsal scales with apparent fenestrations and their separate scale bar.
FIGURE 5 in Two new species of Oregodasys (Gastrotricha: Macrodasyida: Thaumastodermatidae) from Carrie Bow Cay, Belize with ultrastructural observations of the epidermal glandular system
FIGURE 5. Oregodasys katharinae sp. nov. A Dorsal view of an adult as seen from below: bipartite caudal organ (co); frontal organ (fo); posterior adhesive tubes (TbP). B Ventral view of an adult as seen from below: cirri (ci); anterior adhesive tubes (TbA); lateral adhesive tubes (TbL); ventrolateral adhesive tubes (TbVL); testis (te).
FIGURE 6 in Two new species of Oregodasys (Gastrotricha: Macrodasyida: Thaumastodermatidae) from Carrie Bow Cay, Belize with ultrastructural observations of the epidermal glandular system
FIGURE 6. Ultrastructure of the bodywall of Oregodasys katharinae sp. nov. A Section through the dorsal epidermis (ep) at the level of the pharynx (ph). B Closeup of the apical region of the dorsal epidermis showing rod-like secretory inclusions (rd) below the plasma membrane. A single electron-dense element (ede) is present within the endocuticle. C Longitudinal section through two adjacent epidermal glands showing the apical pore (po) and numerous secretory vesicles (sv) with different staining characterstics. D Apical end of an epidermal gland showing the microvillar collar (mv) that forms the apical pore. The overlying exocuticle (ex) and endocuticle (ed) are generally thickest around the papillary glands. Note the presence of a portion of a striated rootlet (sr) at the base of the photograph. E Section through an insunk epidermal gland. Note the elongate gland neck (gn) between epidermal cells that leads to a small pore (po). Electron-dense elements are abundant in the endocuticle around insunk epidermal glands. F Longitudinal section through a portion of a papilla that contains two cell types: a porous cell with an apical opening and large nucleus (nu) on the left, and a sensory cell with a striated rootlet (sr) and apical cilium (out of the field of view) on the right.
FIGURE 1 in Two new species of Oregodasys (Gastrotricha: Macrodasyida: Thaumastodermatidae) from Carrie Bow Cay, Belize with ultrastructural observations of the epidermal glandular system
FIGURE 1. Habitus of Oregodasys norenburgi sp. nov., multiple specimens. A Dorsal view. Inset: closeup of a papilla containing secretory vesicles. B Dorsal view of head region showing ocelli (oc). C DIC image of the ventral mouth (mo) margin showing the anterior adhesive tubes (TbA). D Dark-field image of the midgut region showing several ova (ov) and numerous diatom frustules (di). E DIC image of the posterior pedicles (pd), ventral view. Lateral adhesive tubes (TbL) are present on either side of the pedicles that bear the posterior adhesive tubes (TbP); locomotory cilia (ci) and ventrolateral adhesive tubes (TbVL) are also shown.
FIGURE 4 in Two new species of Oregodasys (Gastrotricha: Macrodasyida: Thaumastodermatidae) from Carrie Bow Cay, Belize with ultrastructural observations of the epidermal glandular system
FIGURE 4. Oregodasys katharinae sp. nov., transmitted light images of the holotype after resin impregnation. A Dorsal view showing numerous epidermal glandulocytes (eg) and one-half of the caudal organ (co). B Ventral view showing the oral hood (oh), mouth region (mo), pharynx (ph), singular testis (te) and bipartite caudal organ.
FIGURE 3 in Two new species of Oregodasys (Gastrotricha: Macrodasyida: Thaumastodermatidae) from Carrie Bow Cay, Belize with ultrastructural observations of the epidermal glandular system
FIGURE 3. Habitus of Oregodasys katharinae sp. nov. A Ventral view showing lateral adhesive tubes (TbL) on the posterior body margin, and posterior adhesive tubes (TbP). B Closeup of the anterior end, ventral view, showing the mouth (mo), anterior adhesive tubes (TbA) and ventrolateral adhesive tubes (TbVL). C Closeup of the lateral body wall showing the triangle-shaped papillae (tp) and blunt papillae (bp). D Closeup of a triangular papilla from a specimen that was made into a permanent wholemount. The vesicles of the underlying glandulocyte stained darkly after osmium tetroxide fixation.
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