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20 results for “Ophiothrix”
Figure 16. Ophiothrix fragilis postlarval development. A–C, 0.34 in Who's who among baby brittle stars (Echinodermata: Ophiuroidea): postmetamorphic development of some North Atlantic forms
Figure 16. Ophiothrix fragilis postlarval development. A–C, 0.34 mm dd postlarvae; A, on arm of adult; B, dorsal, note the large central plate (CPP); C, ventral, note the tricuspid tooth; D–G, 0.55 mm dd postlarvae; D, arm dorsal, note the small terminal plate (TP) and large hooks; F, arm lateral; G, ventral; H, I, 0.8 mm dd postlarvae; H, dorsal, radial shields (RS) and inter-radial plates (IR1, 2) have formed; I, ventral; J, K, 1.1 mm postlarvae; J, dorsal, note the k-plate; K, ventral, note the first tooth papillae (TPa); L–N, 1.3 mm postlarvae; L, dorsal with numerous disc spines; M, ventral with additional TPa; N, arm dorsal, note the serrated shape of the proximal dorsal spines. Abbreviations: as in Figs 1–3, 5. Scale bars in millimetres. Some dorsal plates have fallen off due to the bleaching process (H, J).
FIGURE 15 in Taxonomic review of Ophiothrix Müller & Troschel, 1840 (Echinodermata Ophiuroidea) from Brazil, with the description of four new species
FIGURE 15. Distribution of Ophiothrix species in Brazilian coast. Symbols: white triangle, Ophiothrix rahtbuni; black triangle, Ophiothrix suensoni; black square, Ophiothrix trindadensis; black circle, Ophiothrix brasiliensis n. sp.; white star, Ophiothrix spiniformis n. sp.; white circle, Ophiothrix tommasii n. sp.; black star, Ophiothrix troscheli n. sp.
FIGURE 13 in Taxonomic review of Ophiothrix Müller & Troschel, 1840 (Echinodermata Ophiuroidea) from Brazil, with the description of four new species
FIGURE 13. SEM photographs of vertebrae and arm spines of Ophiothrix troscheli n. sp.: A, proximal surface; B, distal surface; C, dorsal surface; D, ventral surface; E, lateral arm plate; f, arm spine (ZUEC 00857, holotype, São Paulo, Brazil). Scale bars: A–F = 200 μm.
FIGURE 10. Ophiothrix tommasii n in Taxonomic review of Ophiothrix Müller & Troschel, 1840 (Echinodermata Ophiuroidea) from Brazil, with the description of four new species
FIGURE 10. Ophiothrix tommasii n. sp.: A, Dorsal view of the disc; B–C, SEM detail of spines on the disc; D, detail of radial shields coverage; E, oral frame; F, dorsal arm plates; G, detail of spines on the first dorsal arm plate; H, ventral arm plates; I, SEM image of dorsal; J, SEM image of ventral arm plate (UFSITAB 00741, holotype, Maranhão, Brazil). Scale bars: A, D–H = 1 mm; B–C = 500 μm; I–J = 100 μm.
FIGURE 6. Ophiothrix brasiliensis n in Taxonomic review of Ophiothrix Müller & Troschel, 1840 (Echinodermata Ophiuroidea) from Brazil, with the description of four new species
FIGURE 6. Ophiothrix brasiliensis n. sp.: A, Dorsal view of the disc; B–D, SEM detail of spines on the disc; E, detail of radial shields coverage; F, oral frame; G, dorsal arm plates; H, ventral arm plates; I, SEM image of dorsal arm plate; J, SEM image of ventral arm plate (UFBA 01731, holotype, Bahia, Brazil). Scale bars: A, E–H = 1 mm; B–C = 50 μm; D = 20 μm; I–J = 100 μm.
FIGURE 3 in Redescription and designation of a neotype for Ophiothrix angulata (Say, 1825) (Echinodermata: Ophiuroidea: Ophiotrichidae)
FIGURE 3. VariationS found in O. angulata: (A) Circular diSc (USMN 23739); (B) Ventral arm plateS in juvenileS; (C) DorSal arm plateS in juvenileS. Scale barS: A–C = 1 mm.
FIGURE 1 in Redescription and designation of a neotype for Ophiothrix angulata (Say, 1825) (Echinodermata: Ophiuroidea: Ophiotrichidae)
FIGURE 1. Morphological characterS of Ophiothrix angulata (neotype USNM E 33764, SEM imageS USMN 24338): (A) DorSal view of diSc; (B) Bifid SpineS; (C) Trifid SpineS; (D) Radial ShieldS covered by SpineS; (E) Ventral view of diSc; (F), DorSal arm plateS; (G) Ventral arm plate; (H) Lateral arm plate proximal; (I) Lateral arm plate diStal. Scale barS: A, D–F = 1 mm; B-C = 20 µm; G = 500 µm; H = 200 µm; I = 1mm.
FIGURE 2 in Redescription and designation of a neotype for Ophiothrix angulata (Say, 1825) (Echinodermata: Ophiuroidea: Ophiotrichidae)
FIGURE 2. SEM photographS of vertebra and arm SpineS of Ophiothrix angulata (USMN 24338): (A–D) Vertebrae: (A) Proximal aSpect; (B) DiStal aSpect; (C) Ventral aSpect; (D) DorSal aSpect. (E) Arm Spine. Scale barS: A–C = 200 µm; D = 100 µm; E = 500 µm.
FIGURE 6. Ophiothrix angulata ZUEC OPH 2194 in Shallow-water brittle stars (Echinodermata: Ophiuroidea) from Araçá Bay (Southeastern Brazil), with spatial distribution considerations
FIGURE 6. Ophiothrix angulata ZUEC OPH 2194 (5.7 mm dd). (A) Dorsal view. (B) Ventral view. (C) Detail of the oral view. (D) Detail of dorsal arm. (E) Detail of ventral arm. (F) Dorsal arm plate. (G) Ventral arm plate. (H-I) Lateral arm plate. (J) Vertebra—proximal surface. (K) Vertebra—distal surface. (L) Vertebra—dorsal surface. (M) Vertebra—ventral surface. Abbreviations: ads: adoral shields; as: arm spine; bs: bursal slits; cdp: cluster of dental papillae; d: dorsal; dap: dorsal arm plate; ddi: dorso-distal; di: distal; dk: distal keel; ddmf: dorso-distal muscular fossae; ds: disc spine; dp: dorso-proximal; jd: jaw depression; kn: knob; lg: large groove; ma: madreporite; os: oral shields; otp: oral tentacle pore; p: proximal; pe: perforation; rs: radial shields; tn: tentacle notch; ts: tentacle scale; v: ventral; vap: ventral arm plate; vdi: ventro-distal; vp: ventro-proximal; zd: zygocondyle; zp: zygosphene. Stereomicroscope photos: (A)–(E), scale bar equal to 0.5 mm. SEM photos: (F)–(M), scale bar equal to 100 µm.
FIGURE 14. A in Taxonomic review of Ophiothrix Müller & Troschel, 1840 (Echinodermata Ophiuroidea) from Brazil, with the description of four new species
FIGURE 14. A, Dorsal view of specimen from Brazil previously recorded as O. brachyactis by Oliveira et al. (2010) (here assigned as O. brasiliensis n. sp.) showing disc and radial shields covered by spines; B, dorsal view of the paratype of O. brachyactis showing disc covered by granules and naked radial shields (MCZ OPH-3927). Scale bars: A–B = 1 mm.
FIGURE 12. Ophiothrix troscheli n in Taxonomic review of Ophiothrix Müller & Troschel, 1840 (Echinodermata Ophiuroidea) from Brazil, with the description of four new species
FIGURE 12. Ophiothrix troscheli n. sp.: A, Dorsal view of the disc; B, SEM detail of disc spines; C, detail of naked radial shields and dorsal arm plates; D, oral frame; E, ventral arm plates; F, SEM detail of ventral arm plate (ZUEC 00857, holotype, São Paulo, Brazil). Scale bars: A, C–E = 1 mm; F = 100 μm.
FIGURE 11 in Taxonomic review of Ophiothrix Müller & Troschel, 1840 (Echinodermata Ophiuroidea) from Brazil, with the description of four new species
FIGURE 11. SEM photographs of vertebrae and arm spines of Ophiothrix tommasii n. sp.: A, proximal surface; B, distal surface; C, dorsal surface; D, ventral surface; E, lateral arm plate; F, arm spine (UFSITAB 00741). Scale bars: A–B, D = 200 μm; C = 100 μm; E = 500 μm.
FIGURE 7 in Taxonomic review of Ophiothrix Müller & Troschel, 1840 (Echinodermata Ophiuroidea) from Brazil, with the description of four new species
FIGURE 7. SEM photographs of vertebrae, lateral arm plates and arm spines of Ophiothrix brasiliensis n. sp.: A, proximal surface; B, distal surface; C, dorsal surface; D, ventral surface; F, lateral arm plate; E, arm spine (UFBA 01731). Scale bars: A–F = 200 μm.
FIGURE 5 in Taxonomic review of Ophiothrix Müller & Troschel, 1840 (Echinodermata Ophiuroidea) from Brazil, with the description of four new species
FIGURE 5. Ophiothrix trindadensis: A, Dorsal view of the disc showing short spines; B, oral frame; C, dorsal arm plates; D, ventral arm plates (MZUSP 01425, neotype, Trindade Island, Brazil). Scale bars: A–D = 1 mm.
FIGURE 9 in Taxonomic review of Ophiothrix Müller & Troschel, 1840 (Echinodermata Ophiuroidea) from Brazil, with the description of four new species
FIGURE 9. SEM photographs of vertebrae and arm spines of Ophiothrix spiniformis n. sp.: A, proximal surface; B, distal surface; C, dorsal surface; D, ventral surface; E, lateral arm plate; F, arm spine (ZUEC 02374, holotype, Paraná, Brazil). Scale bars: A–D = 200 μm.
FIGURE 3 in Taxonomic review of Ophiothrix Müller & Troschel, 1840 (Echinodermata Ophiuroidea) from Brazil, with the description of four new species
FIGURE 3. Ophiothrix suensoni: A, Dorsal view of disc showing long needle-shaped spines; B, detail of naked radial shields; C, detail of the edge of the disc showing short conical spines; D, oral frame; E, dorsal arm plates; F, ventral arm plates with lower arm spines modified in a hook (ZUEC 01892, Carrie Bow Bay, Belize A–D, F; USMN 19642, Florida, United States, E). Scale bars: A = 2 mm; B–F = 1 mm.
FIGURE 2 in Taxonomic review of Ophiothrix Müller & Troschel, 1840 (Echinodermata Ophiuroidea) from Brazil, with the description of four new species
FIGURE 2. SEM photographs of vertebrae, lateral arm plates and arm spines of Ophiothrix rathbuni: A, proximal surface; B, distal surface; C, dorsal surface; D, ventral surface; E, lateral arm plate; f, arm spine (UFBA 01242) Scale bars: A–D = 200 μm; E–F = 100 μm.
FIGURE 1 in Taxonomic review of Ophiothrix Müller & Troschel, 1840 (Echinodermata Ophiuroidea) from Brazil, with the description of four new species
FIGURE 1. Ophiothrix rathbuni: A, Dorsal view of the disc; B, SEM detail of bifid disc spines; C, SEM detail of trifid disc spines; D, naked radial shields; E, oral frame; F, dorsal arm plates; G, ventral arm plates; H, SEM of dorsal arm plate; I, SEM of ventral arm plate (UFBA 01242). Scale bars: A–G, F = 1 mm; H–I = 100 μm.
FIGURE 4 in Taxonomic review of Ophiothrix Müller & Troschel, 1840 (Echinodermata Ophiuroidea) from Brazil, with the description of four new species
FIGURE 4. Differences of the shape of the disc between specimens of Ophiothrix suensoni: A, disc pentagonal; B, disc circular (USMN 19642, Florida, United States). Scale bars: 1 mm.
FIGURE 8. Ophiothrix spiniformis n in Taxonomic review of Ophiothrix Müller & Troschel, 1840 (Echinodermata Ophiuroidea) from Brazil, with the description of four new species
FIGURE 8. Ophiothrix spiniformis n. sp.: A, Dorsal view of the disc; B, SEM of the disc spine; C, detail of radial shields covered by short spines; D, oral frame; E, dorsal arm plates; F, ventral arm plates; G, SEM image of dorsal arm plate; H, SEM image of ventral arm plate (ZUEC 02374, holotype, Paraná, Brazil). Scale bars: A, C–F = 1 mm; B = 500 μm; G–H = 100 μm.
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