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190 results for “Arhynchobatidae”
Fig. 6 in Reproductive biology of the eyespot skate Atlantoraja cyclophora (Elasmobranchii: Arhynchobatidae) an endemic species of the Southwestern Atlantic Ocean (34ºS - 42ºS)
Fig. 6. Seasonal variation in gonadosomatic (GSI) and hepatosomatic (HSI) indexes for a.-b. males and c.-d. females of Atlantoraja cyclophora. The number of samples analyzed is between parentheses. The boxes represent the interquartile range between Q1 and Q3 with the 50% of data, the central line represents the median value and whiskers extend to the maximum and minimum values
FIGURE 7 in Redescription of the Rio skate Rioraja agassizii (Rajiformes: Arhynchobatidae) with notes on internal anatomy and intraspecific variation
FIGURE 7 | Visceral arches of Rioraja agassizii, MNRJ 50512, female, 505 mm TL. A. jaws; B, D. dorsal and C, E. ventral views of hyoid and gill arches. abc, anterior portion of basibranchial copula; bbc, basibranchial copula; bh, basihyal; cb 1–5, ceratobranchials I–V; mck, Meckel's cartilage; cph, cerato-pseudohyoid; eb 1–5, epibranchials I–V; eph, epi-pseudohyoid; hb 2–4, hypobranchials II–IV; lpbh, lateral projection of basihyal; pb 1–5, pharyngobranchials I–V; pq, palatoquadrate. Scale bar = 5 mm.
FIGURE 6 in Redescription of the Rio skate Rioraja agassizii (Rajiformes: Arhynchobatidae) with notes on internal anatomy and intraspecific variation
FIGURE 6 | Neurocranium of Rioraja agassizii, MNRJ 50512, female, 505 mm TL. A. dorsal, B. ventral, C. lateral views. II, foramen for the optic nerve; III, foramen for the oculomotor nerve; IV, foramen for the trochlear nerve; VI, foramen for the abducens nerve; acvf, anterior canal vein foramen; af, anterior fontanelle; antf, antorbital facet; apba, foramen for the afferent pseudobranchial artery bp, basal plate; epb, epiphysial bridge; end, endolymphatic foramen; ethn, foramen for the passage of the ethmoidal nerve; fm, foramen magnum; hf, hyomandibular facet; hVII, foramen for the passage of the hyomandibular ramus of the facialis nerve; icf, internal carotid artery foramen; inc, inner nasal cartilage; ins, internasal space; ja, jugal arch; na, nasal aperture; nc, nasal capsule; oc, otic capsule; occ, occipital condyle; onc, outer nasal cartilage; opc, opistotic crest; opd, optic pedicel; opf, ophthalmic foramen; ornc oronasal canal; peri, perilymphatic foramen; pf, posterior fontanelle; pfc, prefacial commissure; pnc, posterior nasal cartilage; pos, postorbital process; pre, preorbital process; prf, parietal fossa; prof, prootic formamen; ptp, pterotic process; ra, rostral appendix; rb, rostral base; rn, rostral node; rs, rostrum; soc, supraorbital crest; sopf, superficial ophtalmic foramen.
FIGURE 2 in Redescription of the Rio skate Rioraja agassizii (Rajiformes: Arhynchobatidae) with notes on internal anatomy and intraspecific variation
FIGURE 2 | A. Drawing of Rioraja agassizii provided by Müller, Henle (1841). B. Dorsal view of MNHN 2430, male, 405 mm TL (lectotype designated herein and modified from MNHN database). Scale bar = 20 mm.
FIGURE 5 in Redescription of the Rio skate Rioraja agassizii (Rajiformes: Arhynchobatidae) with notes on internal anatomy and intraspecific variation
FIGURE 5 | Neurocranium of Rioraja agassizii, MZUSP 117280, female, 543 mm TL. A. dorsal, B. ventral views. af, anterior fontanelle; bp, basal plate; epb, epiphysial bridge; end, endolymphatic foramen; icf, internal carotid artery foramen; inc, inner nasal cartilage; ins, internasal space; ja, jugal arch; na, nasal aperture; nc, nasal capsule; oc, otic capsule; occ, occipital condyle; onc, outer nasal cartilage; opf, ophthalmic foramen; peri, perilymphatic foramen; pf, posterior fontanelle; pnc, posterior nasal cartilage; pos, postorbital process; pre, preorbital process; ptp, pterotic process; ra, rostral appendix; rb, rostral base; rn, rostral node; rs, rostrum. Scale bar = 10 mm.
FIGURE 4 in Redescription of the Rio skate Rioraja agassizii (Rajiformes: Arhynchobatidae) with notes on internal anatomy and intraspecific variation
FIGURE 4 | Ventral view of the head of Rioraja agassizii. A. MZUSP 117280, female, 543 mm TL. B. USP (uncatalogued), male. Scale bars = 20 mm.
FIGURE 9 in Redescription of the Rio skate Rioraja agassizii (Rajiformes: Arhynchobatidae) with notes on internal anatomy and intraspecific variation
FIGURE 9 | Map showing the geographic distribution of Rioraja agassizii based on material examined in this study (red) and literature (blue).
FIGURE 1 in Redescription of the Rio skate Rioraja agassizii (Rajiformes: Arhynchobatidae) with notes on internal anatomy and intraspecific variation
FIGURE 1 | Terminology of thorns. alt, alar; idt, interdorsal; iot, interorbital; ist, interespiracular; mct, mediocaudal; mdt, middorsal; mot, midorbital; nut, nuchal; pet, preorbital; pot, postorbital; rst, rostral; sct, scapular; spt, spiracular.
FIGURE 3 in Redescription of the Rio skate Rioraja agassizii (Rajiformes: Arhynchobatidae) with notes on internal anatomy and intraspecific variation
FIGURE 3 | External morphology and color pattern of Rioraja agassizii. A. dorsal view and B. ventral view of MZUSP (uncatalogued), 424 mm TL; C. dorsal view and D. ventral view of UERJ 1569, female, 466 mm TL; E. MZUSP 117280, female, 543 mm TL; F. MNRJ 50512, female, 505 mm TL. Scale bars = 10 cm.
FIGURE 8 in Redescription of the Rio skate Rioraja agassizii (Rajiformes: Arhynchobatidae) with notes on internal anatomy and intraspecific variation
FIGURE 8 | Pelvic girdle and fin skeleton of Rioraja agassizii, MNRJ 50512, female, 505 mm TL. 1pvr, first pelvic radial segment; 1pvrc, condyle for the first pelvic radial segment; bpt, basipterygium; lpp, lateral pelvic process; obf, obturator foramen; pib, pubischiadic bar; pvr, pelvic radial segments. Scale bar = 10 mm.
Fig. 1 in Diet composition and feeding habits of the eyespot skate, Atlantoraja cyclophora (Elasmobranchii: Arhynchobatidae), off Uruguay and northern Argentina
Fig. 1. Study area showing the location of trawl stations (black dots) and cells of the fishing grid (black rectangles) where individuals of Atlantoraja cyclophora were captured off North Argentina and Uruguay.
Fig. 4 in Diet composition and feeding habits of the eyespot skate, Atlantoraja cyclophora (Elasmobranchii: Arhynchobatidae), off Uruguay and northern Argentina
Fig. 4. Mean number of shrimps and teleosts consumed for Atlantoraja cyclophora from off Uruguay and northern Argentina by season and region, respectively.
Fig. 3 in Diet composition and feeding habits of the eyespot skate, Atlantoraja cyclophora (Elasmobranchii: Arhynchobatidae), off Uruguay and northern Argentina
Fig. 3. Changes in consumption of different prey with body size, maturity stage, season and region of Atlantoraja cyclophora from off Uruguay and northern Argentina estimated by generalized linear models for number of shrimps, crabs and teleosts. In shrimps: warm season with solid lines and open circles; cold season with dashed lines and solid circles. In teleosts: north region with solid lines and open circles; south region with dashed lines and solid circles.
Fig. 2 in Diet composition and feeding habits of the eyespot skate, Atlantoraja cyclophora (Elasmobranchii: Arhynchobatidae), off Uruguay and northern Argentina
Fig. 2. Cumulative mean Shannon diversity index as a function of sample size for prey of Atlantoraja cyclophora from off Uruguay and northern Argentina. Dashed lines indicate standard deviation.
Fig. 5 in Diet composition and feeding habits of the eyespot skate, Atlantoraja cyclophora (Elasmobranchii: Arhynchobatidae), off Uruguay and northern Argentina
Fig. 5. Quantile regressions of carapace width (CW) of crabs, cephalothorax length (CL) of shrimps and total length (TL) of teleosts and total length of Atlantoraja cyclophora. The solid, dashed and dotted lines are 5%, 50% and 95% quantile regressions, respectively.
FIG. 9. — Notoraja inusitata n in New deep water skates of the genus Notoraja Ishiyama, 1958 (Rajoidei, Arhynchobatidae) from the southwest Pacific
FIG. 9. — Notoraja inusitata n. sp., holotype (MNHN 2008-1638, male juvenile 444 mm TL): A, dorsal surface; B, ventral surface. Scale bar: 10 cm.
FIG. 16. — Notoraja longiventralis n in New deep water skates of the genus Notoraja Ishiyama, 1958 (Rajoidei, Arhynchobatidae) from the southwest Pacific
FIG. 16. — Notoraja longiventralis n. sp., holotype (MNHN 1999-0449, male juvenile 434 mm TL): A, dorsal surface; B, ventral surface. Scale bar: 10 cm.
FIG. 12 in New deep water skates of the genus Notoraja Ishiyama, 1958 (Rajoidei, Arhynchobatidae) from the southwest Pacific
FIG. 12. — Radiograph of the head of Notoraja inusitata n. sp., holotype (MNHN 2008-1638, male juvenile 444 mm TL). Scale bar: 1 cm.
FIG. 18 in New deep water skates of the genus Notoraja Ishiyama, 1958 (Rajoidei, Arhynchobatidae) from the southwest Pacific
FIG. 18. — Oronasal region of Notoraja longiventralis n. sp., holotype (MNHN 1999-0449, male juvenile 434 mm TL). Scale bar: 1 cm.
FIG. 7 in New deep water skates of the genus Notoraja Ishiyama, 1958 (Rajoidei, Arhynchobatidae) from the southwest Pacific
FIG. 7. — Dorsal head of Notoraja alisae n. sp., dark form (MNHN 1997-3601, male adult 533 mm TL). Scale bar: 1 cm.
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