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828 results for “ascidian”
FIGURE 5. Aplidium peruvianum. A in Ascidian fauna (Tunicata, Ascidiacea) of subantarctic and temperate regions of Chile
FIGURE 5. Aplidium peruvianum. A, colony; B, thorax; C, stomach; D, larva. Scale bars: A, 2 cm, B, 0.5 mm, C, 0.2 mm, D, 0.2 mm.
FIGURE 1 in Ascidian fauna (Tunicata, Ascidiacea) of subantarctic and temperate regions of Chile
FIGURE 1. Map of the coast of Chile with indication of the sampling localities at the two areas surveyed. Locality codes as in Table 1. The main oceanic currents: west wind drift (wwd), Cape Horn Current (CHC) and Humbold Current (HC) are indicated.
FIGURE 4. Aplidium fuegiense. A in Ascidian fauna (Tunicata, Ascidiacea) of subantarctic and temperate regions of Chile
FIGURE 4. Aplidium fuegiense. A, image of a colony, B, thorax with a commensal crustacean inside; C, abdomen and postabdomen. Aplidium variabilis. D, colony; E, anterior part of a zooid; F, larva. Scale bars: A, 2 cm, B, 1 mm, C, 2 mm, D, 2 cm, E, 1 mm, F, 0.25 mm.
FIGURE 10. Polyzoa iosune. A in Ascidian fauna (Tunicata, Ascidiacea) of subantarctic and temperate regions of Chile
FIGURE 10. Polyzoa iosune. A, image of a colony carpeting the substrate and overgrowing Aplidium peruvianum (whitish masses) exposed at low tide; B, close-up of the apical part of the zooids; C, mantle of two zooids, vision of the right side (left of the image) and ventral vision (right of the image); D, dissected zooid; E, same zooid without branchial sac; F, G, details of the branchial sac; H, close-up of hermaphrodite gonads from the right side of the zooid (endostyle is towards the upper-left of the image); I, larva. Images D–H are of stained material. Scale bars: A, 5 cm, B, C, 5mm, D, E, 2 mm, F, 1 mm, G, 0.2 mm, H, 1 mm, I, 0.2 mm.
FIGURE 7. A in Ascidian fauna (Tunicata, Ascidiacea) of subantarctic and temperate regions of Chile
FIGURE 7. A, Ciona robusta on a buoy, note also some Asterocarpa humilis (orange-coloured). Corella eumyota. B, whole individual; C, dissected individual; D, right side of the mantle, branchial sac eliminated. Inset shows magnification of the zone of the genital openings. The specimen in C and D has been stained. Scale bars: A, 10 cm, B, 2 mm, C, D, 1 mm.
FIGURE 6. Synoicum georgianum. A in Ascidian fauna (Tunicata, Ascidiacea) of subantarctic and temperate regions of Chile
FIGURE 6. Synoicum georgianum. A, colony; B, zooid; C, abdomen (stained material); D. transverse section at the stomach level. Scale bars: A, 1 cm, B, 1 mm, C, D, 0.5 mm.
FIGURE 13. Styela changa. A in Ascidian fauna (Tunicata, Ascidiacea) of subantarctic and temperate regions of Chile
FIGURE 13. Styela changa. A, whole individual; B, C, dissected digestive system as seen from the branchial side (B) and from the mantle side (C); D, Specimens of Styela paessleri partially overgrown by Didemnum studeri; E, dissected mantle of an immature individual, branchial sac removed (stained material); F, anterior part of a larva. Scale bars: A, 2 mm, B, C, 0.5 mm, D,E, 1 cm, F, 50 µm.
FIGURE 15. Paramolgula gigantea. A in Ascidian fauna (Tunicata, Ascidiacea) of subantarctic and temperate regions of Chile
FIGURE 15. Paramolgula gigantea. A, underwater image of an specimen from Porvenir Bay; B, dissected individual; C, same individual without branchial sac; D, close-up of the aperture of the left gonad (stained), showing one female (♀) and three male openings (short tubes around ♀); E, image of the branchial sac (stained). Scale bars: A, B, C, 2 cm, D, 2 mm, E, 0.2 mm.
FIGURE 12. Polyzoa opuntia. A in Ascidian fauna (Tunicata, Ascidiacea) of subantarctic and temperate regions of Chile
FIGURE 12. Polyzoa opuntia. A, colonies; B, zooid dissected without branchial sac (stained), inset shows magnification of gonads and endocarps on the left side. Scale bars: A, 2 cm, B, 1 cm.
FIGURE 3 in Ascidian fauna (Tunicata, Ascidiacea) of subantarctic and temperate regions of Chile
FIGURE 3. Didemnid species. Didemnum studeri: A, colonies, B, anterior region of a larva; Polysyncraton trivolutum: C, image of a colony, D, thorax in dorsal (left) and lateral (right) view; E, spicules of Didemnum studeri; F, spicule of Lissoclinum perforatum; G, spicule of Polysyncraton trivolutum. Scale bars: A, 5 cm; B, 0.1 mm; C, 1 cm; D, 0.25 mm; E, 10 µm; F, 5 µm; G, 1 0 µ m.
FIGURE 2. Distaplia colligans. A in Ascidian fauna (Tunicata, Ascidiacea) of subantarctic and temperate regions of Chile
FIGURE 2. Distaplia colligans. A, image of a colony; B, zooid as seen from the left hand side; C, Thoracic region as seen from the right hand side; D, larva. Scale bars: A, 2 cm; B,C,D, 0.5 mm.
FIGURE 34 in Antarctic Ascidians (Tunicata) of the French-Australian survey CEAMARC in Terre Adélie
FIGURE 34. Molgula pedunculata: A, body of a specimen with short peduncle ventrally opened; B, part of the branchial sac.
FIGURE 29 in Antarctic Ascidians (Tunicata) of the French-Australian survey CEAMARC in Terre Adélie
FIGURE 29. Pyura discoveryi: A, a specimen (copyright CEAMARC), scale bar = 1cm; B, left side of a specimen without tunic.
FIGURE 27 in Antarctic Ascidians (Tunicata) of the French-Australian survey CEAMARC in Terre Adélie
FIGURE 27. Pyura bouvetensis: A, body spinules on the tunic; B, spinules of the internal siphon lining. Scale bars A, B = 100µm.
FIGURE 24. A, B in Antarctic Ascidians (Tunicata) of the French-Australian survey CEAMARC in Terre Adélie
FIGURE 24. A, B, musculature of the left body side: A, Bathypera splendens; B, Bathypera hastaefera. C, Bathypera splendens, specimen ventrally opened, scale bar C = 1cm.
FIGURE 25. Culeolus antarcticus A in Antarctic Ascidians (Tunicata) of the French-Australian survey CEAMARC in Terre Adélie
FIGURE 25. Culeolus antarcticus A, body ventrally opened; B, C, musculature on both sides, tunic removed, scale bar = 2cm.
FIGURE 22. A, B in Antarctic Ascidians (Tunicata) of the French-Australian survey CEAMARC in Terre Adélie
FIGURE 22. A, B, spicules: A, Bathypera splendens; B, Bathypera hastaefera. C, Bathypera splendens; D, Bathypera hastaefera. Scale bars: A, B = 100µm; C,D = 3cm.
FIGURE 21. Cnemidocarpa univesica n in Antarctic Ascidians (Tunicata) of the French-Australian survey CEAMARC in Terre Adélie
FIGURE 21. Cnemidocarpa univesica n. sp. Body ventrally opened, branchial sac removed, scale bar =10mm.
FIGURE 15. Corella eumyota. A in Antarctic Ascidians (Tunicata) of the French-Australian survey CEAMARC in Terre Adélie
FIGURE 15. Corella eumyota. A, body musculature and gut from external side, scale bar = 1cm; B, part of the branchial sac.
FIGURE 18. Cnemidocarpa acanthifera n in Antarctic Ascidians (Tunicata) of the French-Australian survey CEAMARC in Terre Adélie
FIGURE 18. Cnemidocarpa acanthifera n.sp. A, C, body ventrally opened, scale bar A= 5mm; B, neural area.
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