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97 results for “Didemnidae”
Fig. 12 in Polysyncraton (Ascidiacea, Didemnidae): a re-examination of some specimens and descriptions of three new species
Fig. 12. Polysyncraton sp. a. Preserved colony. b. Thorax. c. Abdomen. Scale bars: a = 1 cm; b–c = 0.1 mm.
Fig. 10. Polysyncraton purou C. Monniot & F. Monniot, 1987 in Polysyncraton (Ascidiacea, Didemnidae): a re-examination of some specimens and descriptions of three new species
Fig. 10. Polysyncraton purou C. Monniot & F. Monniot, 1987, with structures stained with hemalum (MNHN A2-843). a. Zooid with bifurcated atrial languet (arrow). b. Thorax with button-like atrial languet (big arrow) and muscular process (small arrow). c. Abdomen with gonads (large arrow indicates oocyte). d. Immature larva. e. Mature larva. Scale bar: 0.1 mm.
Fig. 10. Polysyncraton purou C. Monniot & F. Monniot, 1987 in Polysyncraton (Ascidiacea, Didemnidae): a re-examination of some specimens and descriptions of three new species
Fig. 10. Polysyncraton purou C. Monniot & F. Monniot, 1987, with structures stained with hemalum (MNHN A2-843). a. Zooid with bifurcated atrial languet (arrow). b. Thorax with button-like atrial languet (big arrow) and muscular process (small arrow). c. Abdomen with gonads (large arrow indicates oocyte). d. Immature larva. e. Mature larva. Scale bar: 0.1 mm.
Fig. 8. Polysyncraton magnetae Hastings, 1931 in Polysyncraton (Ascidiacea, Didemnidae): a re-examination of some specimens and descriptions of three new species
Fig. 8. Polysyncraton magnetae Hastings, 1931, type specimen (NHM 1930.12.17.46). a. Preserved colony. b. Cross section of the colony showing cavities found in the median region (arrows). c. Spicules. d. Cross section of a decalcified colony. Scale bars: a = 1 cm; c = 10 µm.
Fig. 5 in Polysyncraton (Ascidiacea, Didemnidae): a re-examination of some specimens and descriptions of three new species
Fig. 5. Maximum likelihood tree of species of Polysyncraton based on analysis of 16 sequences of mitochondrial COI. Numbers on or below branches represent the support value of the bootstrap for Maximum likelihood (> 70%) and posterior Bayesian probabilities (> 0.97). Abbreviations of Brazilian states are explained in Table 1.
Fig. 7 in Polysyncraton (Ascidiacea, Didemnidae): a re-examination of some specimens and descriptions of three new species
Fig. 7. Polysyncraton globosum Oliveira & Rocha sp. nov., Australia (NHM 1866.3.21.21). a. Preserved colony. b. Spicules. c. Thorax (big arrow indicates the lateral thoracic organ and small arrows the muscle fibers present on each side of the thorax). d. Abdomen. e–f. Larva stained with hemalum (the arrows in f indicate the membrane of the tail). Scale bars: b = 10 µm; c–d = 0.1 mm; e–f = 0.2 mm.
Fig. 4 in Polysyncraton (Ascidiacea, Didemnidae): a re-examination of some specimens and descriptions of three new species
Fig. 4. Polysyncraton amethysteum (Van Name, 1902), Brazil (DZUP DID-034, POSC-016; LIPY UFPB TUN-293). Structures stained with hemalum. a. Thorax, atrial languet (arrow). b. Abdomen showing the position of the testis (arrow). c–f. Larvae in Brazilian specimens from São Paulo (c) and Paraíba (d–f), different stages in the same colony (e–f). Scale bars: 0.1 mm.
Fig. 6 in Polysyncraton (Ascidiacea, Didemnidae): a re-examination of some specimens and descriptions of three new species
Fig. 6. Polysyncraton cabofriense Oliveira & Rocha sp. nov. (DZUP POSC-50). a. Colony in situ. b. Colony surface (arrows indicating common cloacal apertures with lobes). c. Spicules. d. Thorax stained (big arrow indicating the lateral thoracic organ and small arrow the atrial languet). e. Abdomen (arrow indicating the sperm duct coil). f. Larva. Scale bars: d–f = 0.1 mm. Photo (a) courtesy of L.S. Skinner.
Fig. 9 in Polysyncraton (Ascidiacea, Didemnidae): a re-examination of some specimens and descriptions of three new species
Fig. 9. Polysyncraton magnilarvum (Millar, 1962), stained with hemalum. a. Zooid (arrow pointing at atrial languet). b. Ventral view of the anterior region of the thorax (arrow indicating the lateral thoracic organ). c. Testis follicles (arrow indicating one lobe). d. Abdomen (arrow indicates the sperm duct) (MNHN A2-2466). e. Larva (MNHN A2-2467). Scale bars: a = 0.2 mm; c–e = 0.1 mm.
Fig. 7 in Polysyncraton (Ascidiacea, Didemnidae): a re-examination of some specimens and descriptions of three new species
Fig. 7. Polysyncraton globosum Oliveira & Rocha sp. nov., Australia (NHM 1866.3.21.21). a. Preserved colony. b. Spicules. c. Thorax (big arrow indicates the lateral thoracic organ and small arrows the muscle fibers present on each side of the thorax). d. Abdomen. e–f. Larva stained with hemalum (the arrows in f indicate the membrane of the tail). Scale bars: b = 10 µm; c–d = 0.1 mm; e–f = 0.2 mm.
Fig. 8. Polysyncraton magnetae Hastings, 1931 in Polysyncraton (Ascidiacea, Didemnidae): a re-examination of some specimens and descriptions of three new species
Fig. 8. Polysyncraton magnetae Hastings, 1931, type specimen (NHM 1930.12.17.46). a. Preserved colony. b. Cross section of the colony showing cavities found in the median region (arrows). c. Spicules. d. Cross section of a decalcified colony. Scale bars: a = 1 cm; c = 10 µm.
Fig. 3 in Polysyncraton (Ascidiacea, Didemnidae): a re-examination of some specimens and descriptions of three new species
Fig. 3. Polysyncraton amethysteum (Van Name, 1902), Paraíba, Brazil. a–b. Colonies in situ. c–d. Colony surface detail (arrow indicates one cloacal aperture) (DZUP POSC-14 and DZUP POSC- 13, respectively). e. Cross section of the colony, with thin layer of spicules (arrow) (DZUP POSC-14). f. Spicules. Scale bars: e = 1 mm; f = 10 µm.
Fig. 2 in Polysyncraton (Ascidiacea, Didemnidae): a re-examination of some specimens and descriptions of three new species
Fig. 2. Polysyncraton amethysteum (Van Name, 1902), Florida (USNM 17364). a. Thorax with bifurcated atrial languet (small arrow) and thoracic organ (big arrow). b. Stained abdomen, sperm duct with five coils (arrow). c. Detail of the testis with four follicles and sperm duct with four coils (arrow). Scale bars: 0.1 mm.
Fig. 5 in Polysyncraton (Ascidiacea, Didemnidae): a re-examination of some specimens and descriptions of three new species
Fig. 5. Maximum likelihood tree of species of Polysyncraton based on analysis of 16 sequences of mitochondrial COI. Numbers on or below branches represent the support value of the bootstrap for Maximum likelihood (> 70%) and posterior Bayesian probabilities (> 0.97). Abbreviations of Brazilian states are explained in Table 1.
Fig. 12 in Polysyncraton (Ascidiacea, Didemnidae): a re-examination of some specimens and descriptions of three new species
Fig. 12. Polysyncraton sp. a. Preserved colony. b. Thorax. c. Abdomen. Scale bars: a = 1 cm; b–c = 0.1 mm.
Fig. 9 in Polysyncraton (Ascidiacea, Didemnidae): a re-examination of some specimens and descriptions of three new species
Fig. 9. Polysyncraton magnilarvum (Millar, 1962), stained with hemalum. a. Zooid (arrow pointing at atrial languet). b. Ventral view of the anterior region of the thorax (arrow indicating the lateral thoracic organ). c. Testis follicles (arrow indicating one lobe). d. Abdomen (arrow indicates the sperm duct) (MNHN A2-2466). e. Larva (MNHN A2-2467). Scale bars: a = 0.2 mm; c–e = 0.1 mm.
Fig. 11 in Polysyncraton (Ascidiacea, Didemnidae): a re-examination of some specimens and descriptions of three new species
Fig. 11. Polysyncraton snelliusi Oliveira & Rocha sp. nov. a. Preserved colony. b. Colony surface (arrow indicates the common cloacal aperture with lobes). c. Papillae on the colony surface. d. Spicules (large type). e. Abdomen with gonads, large arrow indicates the follicle (one follicle hidden) and the small arrow the sperm duct. f. Larva. Scale bars: e–f = 0.2 mm.
Fig. 2 in Polysyncraton (Ascidiacea, Didemnidae): a re-examination of some specimens and descriptions of three new species
Fig. 2. Polysyncraton amethysteum (Van Name, 1902), Florida (USNM 17364). a. Thorax with bifurcated atrial languet (small arrow) and thoracic organ (big arrow). b. Stained abdomen, sperm duct with five coils (arrow). c. Detail of the testis with four follicles and sperm duct with four coils (arrow). Scale bars: 0.1 mm.
Fig. 4 in Polysyncraton (Ascidiacea, Didemnidae): a re-examination of some specimens and descriptions of three new species
Fig. 4. Polysyncraton amethysteum (Van Name, 1902), Brazil (DZUP DID-034, POSC-016; LIPY UFPB TUN-293). Structures stained with hemalum. a. Thorax, atrial languet (arrow). b. Abdomen showing the position of the testis (arrow). c–f. Larvae in Brazilian specimens from São Paulo (c) and Paraíba (d–f), different stages in the same colony (e–f). Scale bars: 0.1 mm.
Fig. 6 in Polysyncraton (Ascidiacea, Didemnidae): a re-examination of some specimens and descriptions of three new species
Fig. 6. Polysyncraton cabofriense Oliveira & Rocha sp. nov. (DZUP POSC-50). a. Colony in situ. b. Colony surface (arrows indicating common cloacal apertures with lobes). c. Spicules. d. Thorax stained (big arrow indicating the lateral thoracic organ and small arrow the atrial languet). e. Abdomen (arrow indicating the sperm duct coil). f. Larva. Scale bars: d–f = 0.1 mm. Photo (a) courtesy of L.S. Skinner.
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