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354 results for “Elasmobranchs”
FIGURES 14–19 in Five new species of Acanthobothrium van Beneden, 1849 (Cestoda: Tetraphyllidea) in elasmobranchs from the northwest Atlantic and Gulf of Mexico with first records from smooth-hound sharks and guitarfish
FIGURES 14–19. Acanthobothrium schalli sp. nov. from Mustelus c. canis. 14. Scolex. 15. Hooks. Note tubercles (arrows). 16. Detail of lappets (arrows) on accessory suckers. 17. Mature segment. Note striations on tegument. 18. Detail of ovary. Note union of lobes posterior to shell gland. 19. Detail of ovary in oblique view. Note bilobed form and pedicellate lobules. Scale bars: Figs. 14, 17, 19 = 100 µm. Fig. 15.= 20 µm. Fig. 16, 18= 50 µm.
FIGURES 1–5 in Five new species of Acanthobothrium van Beneden, 1849 (Cestoda: Tetraphyllidea) in elasmobranchs from the northwest Atlantic and Gulf of Mexico with first records from smooth-hound sharks and guitarfish
FIGURES 1–5. Acanthobothrium cairae sp. nov. from Dasyatis centroura. 1. Scolex (holotype). 2. Hooks. 3. Mature segment. Muscle bundles omitted for clarity. 4. Detail of terminal genitalia. 5. Gravid segment. Scale bars: Figs. 1, 3, 5 = 250 µm. Figs. 2, 4= 100 µm.
FIGURES 9–13 in Five new species of Acanthobothrium van Beneden, 1849 (Cestoda: Tetraphyllidea) in elasmobranchs from the northwest Atlantic and Gulf of Mexico with first records from smooth-hound sharks and guitarfish
FIGURES 9–13. Acanthobothrium lentiginosum sp. nov. from the Atlantic guitarfish. 9. Scolex. 10. Hooks. 11. Mature segment. Note posterior extent of testes. 12. Detail of bilobed ovary, inverted A-shaped. 13. Entire worm. Scale bars: Figs. 9, 11, 13= 100 µm. Figs. 10, 12= 50 µm.
FIGURES 6–8 in Five new species of Acanthobothrium van Beneden, 1849 (Cestoda: Tetraphyllidea) in elasmobranchs from the northwest Atlantic and Gulf of Mexico with first records from smooth-hound sharks and guitarfish
FIGURES 6–8. Transverse sections of Acanthobothrium cairae sp. nov. 6. Immature segment, anterior to cirrus sac. Note 8 large muscle bundles. 7. Mature segment, anterior to ovary. Note testes, vitellaria, uterus and 8 large muscle bundles. 8. Mature segment. Section at level of ovarian isthmus. Note bilobed ovary and 8 large muscle bundles. Abbreviations: dc, dorsal osmoregulatory canal; m, muscle bundle; o, ovary; t, testis; u, uterus; v, vagina; vc, ventral osmoregulatory canal; vt, vitelline follicles, Scale bars: Figs. 6–8= 200 µm.
FIGURE 10. Prochristianella scholzi n in Prochristianella Dollfus, 1946 (Trypanorhyncha: Eutetrarhynchidae) from elasmobranchs off Borneo and Australia, including new records and the description of four new species
FIGURE 10. Prochristianella scholzi n. sp. from Taeniura lymma 1 (sensu Naylor et al. 2012). Tentacular armature. A. Basal and metabasal regions, external surface. B. Basal and metabasal regions, bothrial surface. C. Basal and metabasal regions, antibothrial surface; note opposing surface to (B) of the same tentacle.
FIGURE 8. Prochristianella kostadinovae n in Prochristianella Dollfus, 1946 (Trypanorhyncha: Eutetrarhynchidae) from elasmobranchs off Borneo and Australia, including new records and the description of four new species
FIGURE 8. Prochristianella kostadinovae n. sp. from Himantura uarnak 2 (sensu Naylor et al. 2012). Tentacular armature. A. Basal and metabasal regions, external surface. B. Basal and metabasal regions, antibothrial surface. C. Basal and metabasal regions, bothrial surface; note opposing surface to (B) of the same tentacle. D. Outlines of metabasal hooks.
FIGURE 9. Prochristianella scholzi n in Prochristianella Dollfus, 1946 (Trypanorhyncha: Eutetrarhynchidae) from elasmobranchs off Borneo and Australia, including new records and the description of four new species
FIGURE 9. Prochristianella scholzi n. sp. from Taeniura lymma 1 (sensu Naylor et al. 2012). A. Partial specimen. B. Mature segment. C. Bulb. D. Scolex. E. Outlines of metabasal hooks. Abbreviations: cs, cirrus sac; gc, gland-cells; mg, Mehlis' gland; ov, ovary; rm, retractor muscle; sr, seminal receptacle; t, testis; vit, vitelline follicle.
FIGURE 7. Prochristianella kostadinovae n in Prochristianella Dollfus, 1946 (Trypanorhyncha: Eutetrarhynchidae) from elasmobranchs off Borneo and Australia, including new records and the description of four new species
FIGURE 7. Prochristianella kostadinovae n. sp. from Himantura uarnak 2 (sensu Naylor et al. 2012). A. Partial specimen. B. Mature segment. C. Scolex. D. Bulb. Abbreviations: cs, cirrus sac; gc, gland-cells; mg, Mehlis' gland; ov, ovary; rm, retractor muscle; t, testis; vit, vitelline follicle.
FIGURE 6. Prochristianella jensenae n in Prochristianella Dollfus, 1946 (Trypanorhyncha: Eutetrarhynchidae) from elasmobranchs off Borneo and Australia, including new records and the description of four new species
FIGURE 6. Prochristianella jensenae n. sp. from Pastinachus solocirostris. Scanning electron micrographs. A. Complete specimen. B. Scolex in lateral view. C. Tentacular armature; metabasal region, bothrial surface. D. Billhooks in lateral (left) and dorso-ventral (right) views. E. Tentacular armature, basal region, internal surface; note erect billhook. F. Tentacular armature, metabasal region, external surface.
FIGURE 5. Prochristianella jensenae n in Prochristianella Dollfus, 1946 (Trypanorhyncha: Eutetrarhynchidae) from elasmobranchs off Borneo and Australia, including new records and the description of four new species
FIGURE 5. Prochristianella jensenae n. sp. from Pastinachus gracilicaudus (A, D) and P. solocirostris (B, C). Tentacular armature. A. Basal and metabasal regions, internal surface. B. Metabasal region, antibothrial surface. C. Basal and metabasal regions, antibothrial surface. D. Basal and metabasal regions, bothrial surface.
FIGURE 4. Prochristianella jensenae n in Prochristianella Dollfus, 1946 (Trypanorhyncha: Eutetrarhynchidae) from elasmobranchs off Borneo and Australia, including new records and the description of four new species
FIGURE 4. Prochristianella jensenae n. sp. from Pastinachus solocirostris. A. Complete specimen. B. Scolex. C. Bulb; note absence of gland-cells. D. Mature segment. E. Gravid segment. Abbreviations: cs, cirrus sac; isv, internal seminal vesicle; mg, Mehlis' gland; ov, ovary; rm, retractor muscle; t, testis; ut, uterus; vit, vitelline follicle.
FIGURE 2. Prochristianella cairae n in Prochristianella Dollfus, 1946 (Trypanorhyncha: Eutetrarhynchidae) from elasmobranchs off Borneo and Australia, including new records and the description of four new species
FIGURE 2. Prochristianella cairae n. sp. from Chiloscyllium punctatum. Tentacular armature. A. Metabasal region, antibothrial surface. B. Metabasal region, bothrial surface; note opposing surface to (A) of the same tentacle. C. Distal region, internal surface. D. Basal region, external surface.
FIGURE 3. Prochristianella cairae n in Prochristianella Dollfus, 1946 (Trypanorhyncha: Eutetrarhynchidae) from elasmobranchs off Borneo and Australia, including new records and the description of four new species
FIGURE 3. Prochristianella cairae n. sp. from Chiloscyllium punctatum. Scanning electron micrographs. A. Scolex in dorsoventral view. B. Basal region, bothrial tentacular surface. C. Metabasal region, external tentacular surface. D. Lateral margin of bothrium, showing serrate spathulate spinitriches on proximal bothrial surface. E. Serrate spathulate spinitriches on pars vaginalis.
FIGURE 1. Prochristianella cairae n in Prochristianella Dollfus, 1946 (Trypanorhyncha: Eutetrarhynchidae) from elasmobranchs off Borneo and Australia, including new records and the description of four new species
FIGURE 1. Prochristianella cairae n. sp. from Chiloscyllium punctatum (A–C, E) and C. indicum (D). A. Complete specimen. B. Bulb. C. Scolex. D. Mature segment. E. Gravid segment. Abbreviations: cs, cirrus sac; gc, gland-cells; mg, Mehlis' gland; ov, ovary; rm, retractor muscle; t, testis; ut, uterus; vit, vitelline follicle.
FIGURE 5 in Records of new and rare elasmobranchs from Taiwan
FIGURE 5. Specimen of leadhued skate Notoraja tobitukai, female, 43.6 cm TL, EBFS020212040401-1, Da-xi, December 2004.
FIGURE 7 in Records of new and rare elasmobranchs from Taiwan
FIGURE 7. Specimen of pelagic stingray Pteroplatytrygon violacea, female, 96.7 cm TL, EBFS020213050401-1, Da-xi, December 2005.
FIGURE 6 in Records of new and rare elasmobranchs from Taiwan
FIGURE 6. Specimen of giant skate Dipturus gigas, female, 32.3 cm TL, EBFS020212040301-2, Da-xi, March 2004.
FIGURE 4 in Records of new and rare elasmobranchs from Taiwan
FIGURE 4. Egg capsule of Parmaturus pilosus, 79.55 mm × 30.76 mm × 15.68 mm with a 37.42 mm × 27.10 mm oval egg.
FIGURE 3 in Records of new and rare elasmobranchs from Taiwan
FIGURE 3. Specimen of salamander shark Parmaturus pilosus, female, 58.8 cm TL, EBFS020204010602-1, Cheng-gong, April 2012.
FIGURE 2 in Records of new and rare elasmobranchs from Taiwan
FIGURE 2. Specimen of smalltooth sandtiger Odontaspis ferox, female, 100.9 cm TL, EBFS020203010201-2, Da-xi, June 2004.
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