Results 21 to 30 of about 928 (184)

Potential metabolic records in isotope signals of chondrichthyan hard tissues. [PDF]

J Fish Biol
Abstract Recent advances have demonstrated that the field metabolic rates (FMRs) of teleost fishes can be quantified from stable isotope compositions of carbonate‐biomineralized otoliths. Bones and teeth, in addition to bioapatite, contain carbonate and should retain a similar isotopic expression of metabolic rate.
Díaz-Delgado E, Chung MT, Magozzi S, Willis TJ, Trueman CN.   +4 more
europepmc   +2 more sources

A blacktip's black tip: The reliability of using dorsal-fin patterns for photo identification of blacktip reef sharks (Carcharhinus melanopterus). [PDF]

J Fish Biol
Abstract Photo identification (photo ID) has increasingly become a valuable technique serving not only to identify individual animals but also to monitor populations, track migration patterns and assess wildlife health, among others uses. Various species of sharks are amenable to photo ID, among which the blacktip reef shark (Carcharhinus melanopterus)
Lionnet LAMG, Debaere SF, Heuls H, Mourier J, Planes S, Rummer JL.   +5 more
europepmc   +2 more sources

In Situ Thrust Measurement of Fish During Locomotion; Test Case: Sharks. [PDF]

Ecol Evol
We present a novel method that uses in situ video data of fish locomotion to calculate thrust. This methodology was applied to several large elasmobranch species, which are typically challenging to measure. Our findings indicate that coastal pelagic species exhibited lower scaled thrust than benthic species, suggesting that benthic species may be less ...
Payne B, Keller BA, Weihs D, Gurka R.
europepmc   +2 more sources

Preliminary assessment of the ecological sustainability of a data‐limited small‐scale shark fishery in India

Conservation Science and Practice
Small‐scale fisheries support millions of people globally, but if poorly monitored and managed, they can negatively impact threatened marine species like sharks.
Trisha Gupta, William N. S. Arlidge, Divya Karnad, Avanthika Kamath, Harsha Gaonkar, E. J. Milner Gulland   +5 more
doaj   +2 more sources

A Comparison of DNA Metabarcoding Cloacal Swabs and Stomach Contents for Shark Diet Reconstruction

Environmental DNA
Metabarcoding fecal matter is increasingly common in dietary studies across a variety of taxa. This approach assumes that enough prey DNA remains detectable in the fecal DNA (fDNA) as the prey DNA becomes degraded while passing through the digestive ...
Savannah J. Ryburn, Eldridge Wisely, Jeffrey D. Plumlee, Creed C. Branham, F. Joel Fodrie, John F. Bruno   +5 more
doaj   +2 more sources

Stochastic demographic analyses of the silvertip shark (Carcharhinus albimarginatus) and the common blacktip shark (Carcharhinus limbatus) from the Indo-Pacific

Fisheries Research, 2017
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 ...
Tobin, Andrew J., White, William T., Andrew Chin, William T. White, Brian Kumasi, Colin A. Simpfendorfer, Chin, Andrew, Simpfendorfer, Colin A., Jonathan J. Smart, Smart, Jonathan J., Kumasi, Brian, Andrew J. Tobin   +11 more
core   +3 more sources

Predictions of southern migration timing in coastal sharks under future ocean warming. [PDF]

Conserv Biol
Abstract Projected redistribution of marine species due to ocean warming may undermine current conservation efforts. Yet, there have been few studies on how ocean warming may alter migration timing. Across 5 years of acoustic telemetry data (2018–2022), we determined environmental drivers of southward migration timing for 6 migratory shark species from
Manz MH, Shipley ON, Cerrato RM, Hueter RE, Newton AL, Tyminski JP, Franks BR, Curtis TH, Fischer C, Zacharias JP, Scott C, Dunton KJ, Kneebone J, Peterson BJ, Scannell BJ, Dodd JF, Frisk MG.   +16 more
europepmc   +2 more sources

Environmental DNA detection tracks established seasonal occurrence of blacktip sharks (Carcharhinus limbatus) in a semi-enclosed subtropical bay [PDF]

Scientific Reports, 2020
Bautisse Postaire, Judith Bakker, Jayne M Gardiner   +2 more
exaly   +2 more sources

Concentración de Hg, Pb, Cd, Cr y As en hígado de Carcharhinus limbatus (Carcharhiniformes: Carcharhinidae) capturado en Veracruz, México

Revista de Biología Tropical, 2013
La contaminación de los ecosistemas marinos y costeros por metales pesados en el Golfo de México es uno de los problemas que afectan a los recursos naturales del medio acuático.
Fernando Mendoza-Díaz, Arturo Serrano, Liliana Cuervo-López, Alejandra López-Jiménez, José A. Galindo, Agustín Basañez-Muñoz   +5 more
doaj   +3 more sources

Liver lipids of Indian and Atlantic Ocean spinner Carcharhinus brevipinna and blacktip Carcharhinus limbatus sharks

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.
Zayed, S, Davidson, B, Zayed, M, Cliff, G   +3 more
core   +2 more sources