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De, Marcelo R. - One of the best experts on this subject based on the ideXlab platform.
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FIGURE 18 in The catshark genus Scyliorhinus (Chondrichthyes: Carcharhiniformes: Scyliorhinidae): taxonomy, morphology and distribution
2019Co-Authors: Soares, Karla D. A., De, Marcelo R.Abstract:FIGURE 18. Map showing the geographic distribution of Scyliorhinus canicula based on material examined in this study. Black star indicates the neotype locality
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FIGURE 78. Scyliorhinus torazame. A, NSMT 65831 in The catshark genus Scyliorhinus (Chondrichthyes: Carcharhiniformes: Scyliorhinidae): taxonomy, morphology and distribution
2019Co-Authors: Soares, Karla D. A., De, Marcelo R.Abstract:FIGURE 78. Scyliorhinus torazame. A, NSMT 65831, female, 411.2 mm TL (Kamaya, Japan); B–F, NSMT 50632, male, 427.9 mm TL (Chiba, Japan, 35°10'N, 139°48'E); A–B, ventral view of head; C, detail of pectoral fins; D, lateral view of head; E, dorsal view of head; F, detail of pelvic fins and claspers. Scale bar = 20 mm
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FIGURE 50 in The catshark genus Scyliorhinus (Chondrichthyes: Carcharhiniformes: Scyliorhinidae): taxonomy, morphology and distribution
2019Co-Authors: Soares, Karla D. A., De, Marcelo R.Abstract:FIGURE 50. Scyliorhinus hesperius; lateral view. A, CAS 643, female, 265 mm TL (Caribbean Sea, 12°35'N, 82°19'W); B, USNM 187688, female, 316 mm TL (Caribbean Sea, 16°45'N, 81° 27'W). Scale bar = 20 mm
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FIGURE 47. Scyliorhinus garmani, USNM 43749 in The catshark genus Scyliorhinus (Chondrichthyes: Carcharhiniformes: Scyliorhinidae): taxonomy, morphology and distribution
2019Co-Authors: Soares, Karla D. A., De, Marcelo R.Abstract:FIGURE 47. Scyliorhinus garmani, USNM 43749, female, 267.2 mm TL ("East Indies", probably Philippines). A, ventral view of head and pectoral fins; B, lateral view of head; C, dorsal view of head; D, detail of pelvic fins. Scale bar = 10 mm
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FIGURE 31 in The catshark genus Scyliorhinus (Chondrichthyes: Carcharhiniformes: Scyliorhinidae): taxonomy, morphology and distribution
2019Co-Authors: Soares, Karla D. A., De, Marcelo R.Abstract:FIGURE 31. Dermal denticles of Scyliorhinus cervigoni, USNM 221599, male, 283 mm TL (Guinea Bissau, 10°44'N, 17°06'W). A, region above pectoral fin base; B, region below first dorsal fin origin; C, region below second dorsal fin insertion. Scale bar = 250 µm
Soares, Karla D. A. - One of the best experts on this subject based on the ideXlab platform.
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FIGURE 51. Scyliorhinus hesperius. A, D, E, USNM 187732 in The catshark genus Scyliorhinus (Chondrichthyes: Carcharhiniformes: Scyliorhinidae): taxonomy, morphology and distribution
2019Co-Authors: Soares, Karla D. A., De, Marcelo R.Abstract:FIGURE 51. Scyliorhinus hesperius. A, D, E, USNM 187732, female, 425 mm TL (Caribbean coast of Panama, Gulf of Mosquitos, 9° 03'N 81°22'W); B, USAC 256, male, 420 mm TL (Izabal, Guatemala, 15° 49.78'N, 88°12.34'W); C, USAC 254, male, 429 mm TL (Izabal, Guatemala, 15° 49.78'N, 88°12.34'W); F, USNM 187728, female, 338 mm TL (Nicaragua, 14°10'N, 81°55'W). A, B, ventral view of head; C, detail of pectoral fins; D, lateral view of head; E, dorsal view of head; F, detail of pelvic fins. Scale bar = 20 mm
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FIGURE 78. Scyliorhinus torazame. A, NSMT 65831 in The catshark genus Scyliorhinus (Chondrichthyes: Carcharhiniformes: Scyliorhinidae): taxonomy, morphology and distribution
2019Co-Authors: Soares, Karla D. A., De, Marcelo R.Abstract:FIGURE 78. Scyliorhinus torazame. A, NSMT 65831, female, 411.2 mm TL (Kamaya, Japan); B–F, NSMT 50632, male, 427.9 mm TL (Chiba, Japan, 35°10'N, 139°48'E); A–B, ventral view of head; C, detail of pectoral fins; D, lateral view of head; E, dorsal view of head; F, detail of pelvic fins and claspers. Scale bar = 20 mm
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FIGURE 50 in The catshark genus Scyliorhinus (Chondrichthyes: Carcharhiniformes: Scyliorhinidae): taxonomy, morphology and distribution
2019Co-Authors: Soares, Karla D. A., De, Marcelo R.Abstract:FIGURE 50. Scyliorhinus hesperius; lateral view. A, CAS 643, female, 265 mm TL (Caribbean Sea, 12°35'N, 82°19'W); B, USNM 187688, female, 316 mm TL (Caribbean Sea, 16°45'N, 81° 27'W). Scale bar = 20 mm
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FIGURE 47. Scyliorhinus garmani, USNM 43749 in The catshark genus Scyliorhinus (Chondrichthyes: Carcharhiniformes: Scyliorhinidae): taxonomy, morphology and distribution
2019Co-Authors: Soares, Karla D. A., De, Marcelo R.Abstract:FIGURE 47. Scyliorhinus garmani, USNM 43749, female, 267.2 mm TL ("East Indies", probably Philippines). A, ventral view of head and pectoral fins; B, lateral view of head; C, dorsal view of head; D, detail of pelvic fins. Scale bar = 10 mm
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FIGURE 31 in The catshark genus Scyliorhinus (Chondrichthyes: Carcharhiniformes: Scyliorhinidae): taxonomy, morphology and distribution
2019Co-Authors: Soares, Karla D. A., De, Marcelo R.Abstract:FIGURE 31. Dermal denticles of Scyliorhinus cervigoni, USNM 221599, male, 283 mm TL (Guinea Bissau, 10°44'N, 17°06'W). A, region above pectoral fin base; B, region below first dorsal fin origin; C, region below second dorsal fin insertion. Scale bar = 250 µm
Michael J Conlon - One of the best experts on this subject based on the ideXlab platform.
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cardiovascular actions of dogfish urotensin i in the dogfish Scyliorhinus canicula
1998Co-Authors: Björn Platzack, Neil Hazon, Courtney Schaffert, Michael J ConlonAbstract:Abstract A synthetic replicate of dogfish urotensin I (U-I), a 41-amino-acid residue peptide isolated from an extract of the caudal spinal cord region of the European spotted dogfish Scyliorhinus canicula was prepared in order to study its cardiovascular actions in the species of origin. Bolus intraarterial injections of dogfish U-I (0.3–30 nmol/kg body wt) into the celiac artery of unanesthetized dogfish produced a transient fall in arterial blood pressure ( P P P
Karla D A Soares - One of the best experts on this subject based on the ideXlab platform.
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sexually dimorphic body proportions in the catshark genus Scyliorhinus chondrichthyes carcharhiniformes scyliorhinidae
2019Co-Authors: Karla D A SoaresAbstract:Intersexual differences in morphometrics were investigated in five species of the catshark genus Scyliorhinus. ANCOVA was used to test 59 measurements, considering capture location and total length as covariates. In all examined species, pelvic-anal distances and pelvic-fin inner margin lengths were greater in males than in females, representing a clear pattern for the genus.
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the catshark genus Scyliorhinus chondrichthyes carcharhiniformes scyliorhinidae taxonomy morphology and distribution
2019Co-Authors: Karla D A Soares, Marcelo R De CarvalhoAbstract:The catshark genus Scyliorhinus belongs to the family Scyliorhinidae, the most diverse family of sharks, and currently presents 16 valid species according to most modern accounts. The long history of taxonomic rearrangements and inaccurate descriptions of many species have contributed to misidentification of specimens and lack of information on the distributional range and diagnostic characters of its species. Species of Scyliorhinus are reviewed and redescribed here, with detailed descriptions on external morphology, neurocranium, claspers, dermal denticles, and tooth morphology provided for the first time for all species. Sixteen species are recognized as valid: Scyliorhinus boa (Goode Bean, 1896), S. cabofriensis Soares, Gomes de Carvalho, 2016, S. canicula (Linnaeus, 1758), S. capensis (Muller Henle, 1838), S. cervigoni Maurin Bonnet, 1970, S. comoroensis Compagno, 1988, S. duhamelii (Garman, 1913), S. garmani (Fowler, 1934), S. haeckelii (Miranda Ribeiro, 1907), S. hesperius Springer, 1966, S. meadi Springer, 1966, S. retifer (Garman, 1881), S. stellaris (Linnaeus, 1758), S. torazame (Tanaka, 1908), S. torrei Howell-Rivero, 1936, and S. ugoi Soares, Gomes Gadig, 2015. The main taxonomic decisions herein taken include the resurrection of S. duhamelii (previously a junior synonym of S. canicula) and the synonimization of S. tokubee with S. torazame. Information on geographic distribution was updated for most species, especially for those with wide ranges (S. canicula, S. haeckelii, S. retifer, and S. stellaris).
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taxonomic review of catsharks of the Scyliorhinus haeckelii group with the description of a new species chondrichthyes carcharhiniformes scyliorhinidae
2016Co-Authors: Karla D A Soares, Ulisses L Gomes, Marcelo R De CarvalhoAbstract:Sharks of the genus Scyliorhinus from the southwestern Atlantic are reviewed; identification problems and taxonomic misinformation given in the literature are rectified. After extensive examination of the external and internal morphology of specimens collected mostly off southeastern and southern Brazil, Scyliorhinus besnardi Springer & Sadowsky, 1970 is placed in the synonymy of S. haeckelii (Miranda Ribeiro, 1907), which is thoroughly redescribed. Additionally, a new species, Scyliorhinus cabofriensis , sp. nov., is described from the state of Rio de Janeiro, distinguished from all southwestern Atlantic congeners by its color pattern, clasper and neurocranial morphology, and proportional measurements. A key to Scyliorhinus species occurring in the southwestern Atlantic is also provided.
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Scyliorhinus ugoi a new species of catshark from brazil chondrichthyes carcharhiniformes scyliorhinidae
2015Co-Authors: Karla D A Soares, Otto F B Gadig, Ulisses L GomesAbstract:A new species of catshark (Carcharhiniformes, Scyliorhinidae), Scyliorhinus ugoi sp. nov., is described from off Northeastern and Southeastern Brazil. The new species is closest to the Scyliorhinus haeckelii/besnardi group and S. hesperius but differs in background coloration, head width, sexual maturity, and in cranial and body proportions.
René Holst - One of the best experts on this subject based on the ideXlab platform.
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The survival of discarded lesser-spotted dogfish ( Scyliorhinus canicula) in the Western English Channel beam trawl fishery
2005Co-Authors: Andrew S. Revill, Nicholas K. Dulvy, René HolstAbstract:A large number of lesser-spotted dogfish (Scyliorhinus canicula) are caught and discarded in the Western English Channel beam trawl fishery. Using onboard survival aquaria, the survival rate of such fish discards was estimated to be very high (98%). The fish had been subjected to harsh conditions during the capture, towing and deck-sorting processes suggesting that the species is relatively resilient to such rigours.
