Results 171 to 180 of about 2,528 (204)
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Molecular Ecology, 2023
AbstractUnderstanding how interactions among microevolutionary forces generate genetic population structure of exploited species is vital to the implementation of management policies that facilitate persistence. Philopatry displayed by many coastal shark species can impact gene flow and facilitate selection, and has direct implications for the spatial ...
Dominic G. Swift +9 more
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AbstractUnderstanding how interactions among microevolutionary forces generate genetic population structure of exploited species is vital to the implementation of management policies that facilitate persistence. Philopatry displayed by many coastal shark species can impact gene flow and facilitate selection, and has direct implications for the spatial ...
Dominic G. Swift +9 more
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The Journal of Parasitology, 2000
Skin lesions caused by the ectoparasite Dermophthirius penneri Benz, 1987 (Monogenea: Microbothriidae) on 2 wild-caught blacktip sharks (Carcharhinus limbatus) from the northern Gulf of Mexico were studied using light and scanning electron microscopy.
S A, Bullard, S, Frasca, G W, Benz
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Skin lesions caused by the ectoparasite Dermophthirius penneri Benz, 1987 (Monogenea: Microbothriidae) on 2 wild-caught blacktip sharks (Carcharhinus limbatus) from the northern Gulf of Mexico were studied using light and scanning electron microscopy.
S A, Bullard, S, Frasca, G W, Benz
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Characterization of adrenal cytochrome P450c21 from the blacktip shark (Carcharhinus limbatus)
Journal of Experimental Zoology, 1995AbstractThe characteristics of cytochrome P450c21 (21 hydroxylase; E.C. 1.14.99.10) were determined in interrenal tissue from blacktip shark (Carcharhinus limbatus). Consistent with other vertebrates, 21‐hydroxylase activity was enriched in the microsomal fraction of the interrenal and was dependent upon a source of reducing equivalents.
B. Scott Nunez, John M. Trant
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Parthenogenesis in a large‐bodied requiem shark, the blacktip Carcharhinus limbatus
Journal of Fish Biology, 2008Genetic evidence is provided for parthenogenesis in a large‐bodied shark, the blacktip Carcharhinus limbatus, from the speciose and commercially important family Carcharhinidae, the first verified case of asexual development in this lineage and only the second for any chondrichthyan.
Chapman, Demian D. +2 more
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Size and sex segregation of aggregating blacktip sharks,
AbstractBlacktip sharks (Carcharhinus limbatus) form large seasonal aggregations numbering in the thousands. These aggregations are typically spotted from the air which makes it impossible to determine the sex and size distribution. We sampled C. limbatus that occur in large aggregations off the coast of southeast Florida.
Savannah M. Arvin, Stephen M. Kajiura
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Fisheries Research, 2017
Abstract Information on how shark populations respond to fishing mortality ( F ) is critical to developing successful management and conservation strategies. However, data on catch, fishing effort and species abundance are often lacking for shark populations – preventing stock assessments from being conducted.
Smart, Jonathan J. +5 more
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Abstract Information on how shark populations respond to fishing mortality ( F ) is critical to developing successful management and conservation strategies. However, data on catch, fishing effort and species abundance are often lacking for shark populations – preventing stock assessments from being conducted.
Smart, Jonathan J. +5 more
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African Journal of Marine Science, 2011
Shark liver oils are rich in polyunsaturated fatty acids, especially the n3 moieties. Data on the liver fatty acids of sharks from African waters, however, are limited. Liver samples from sharks from the western Indian Ocean off the east coast of South Africa and those from the Atlantic Ocean and Gulf of Mexico were examined.
Davidson, B +3 more
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Shark liver oils are rich in polyunsaturated fatty acids, especially the n3 moieties. Data on the liver fatty acids of sharks from African waters, however, are limited. Liver samples from sharks from the western Indian Ocean off the east coast of South Africa and those from the Atlantic Ocean and Gulf of Mexico were examined.
Davidson, B +3 more
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Marine Biology, 1991
Allozyme electrophoresis was used to show that the two morphologically different groups ofCarcharhinus limbatus co-existing in waters to the north of Australia were distinct species. Forty-eight loci were examined in 967 specimens of the normal form and 20 specimens of the dark pelvic form collected between 1982 and 1985.
S. Lavery, J. B. Shaklee
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Allozyme electrophoresis was used to show that the two morphologically different groups ofCarcharhinus limbatus co-existing in waters to the north of Australia were distinct species. Forty-eight loci were examined in 967 specimens of the normal form and 20 specimens of the dark pelvic form collected between 1982 and 1985.
S. Lavery, J. B. Shaklee
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Journal of Fish Biology, 2015
A longline survey was conducted from 2004 to 2014 to investigate the demographic population structure and seasonal abundance of the blacktip shark Carcharhinus limbatus in the Bimini Islands, the Bahamas. All individuals sampled (n = 242) were sub‐adult or adults [70·1–145·1 cm pre‐caudal length (LPC) range] with no neonates or YOY recorded in Bimini ...
K S, Gledhill +7 more
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A longline survey was conducted from 2004 to 2014 to investigate the demographic population structure and seasonal abundance of the blacktip shark Carcharhinus limbatus in the Bimini Islands, the Bahamas. All individuals sampled (n = 242) were sub‐adult or adults [70·1–145·1 cm pre‐caudal length (LPC) range] with no neonates or YOY recorded in Bimini ...
K S, Gledhill +7 more
openaire +2 more sources