Conservation Science and PracticeSmall‐scale fisheries support millions of people globally, but if poorly monitored and managed, they can negatively impact threatened marine species like sharks.
Trisha Gupta +5 more
doaj +2 more sources
A Comparison of DNA Metabarcoding Cloacal Swabs and Stomach Contents for Shark Diet Reconstruction
Environmental DNAMetabarcoding 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 +5 more
doaj +2 more sources
In Troubled Waters: Applying DNA Barcoding to Monitor Singapore's Shark Fin Trade. [PDF]
Ecol EvolBar chart detailing species or genus identification, occurrence and IUCN status. An asterisk (*) indicates CITES Appendix II listed species. An asterisk next to a genus level identification indicates that the species identified within this genus are listed on Appendix II.
Ramanan A +11 more
europepmc +2 more sources
The Phenomenon of Piebaldism in Sharks: A Review of Global Sightings and Patterns. [PDF]
Ecol EvolChromatic disorders like piebaldism—a rare form of leucism causing partial pigment loss—have been documented in 25 wild shark cases across 17 species and 11 families, with varying anatomical distribution. This study compiles published and unpublished records to better understand the taxonomic and geographical spread of piebaldism and its potential ...
Whitehead DA +9 more
europepmc +2 more sources
Potential metabolic records in isotope signals of chondrichthyan hard tissues. [PDF]
J Fish BiolAbstract 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 +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 BiolAbstract 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 +5 more
europepmc +2 more sources
In Situ Thrust Measurement of Fish During Locomotion; Test Case: Sharks. [PDF]
Ecol EvolWe 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
The risk assessment of Lead, Cadmium and Zinc in the two edible fishe species (Carcharhinus limbatus) and (Epinephelus coioides) of Persian Gulf in 2016 [PDF]
Pizhūhish dar Bihdāsht-i Muḥīṭ., 2018 Background and aim:With the development of coastal industries and cities, aquatic ecosystems and organisms are exposed to contaminants, especially heavy metals. Heavy metals accumulate in aquatic tissues and eventually enter the food chain and human body.
Parisa Dadkhah +2 more
doaj +1 more source
Predictions of southern migration timing in coastal sharks under future ocean warming. [PDF]
Conserv BiolAbstract 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 +16 more
europepmc +2 more sources
Secondary predation constrains DNA-based diet reconstruction in two threatened shark species
Scientific Reports, 2021 Increasing fishing effort, including bycatch and discard practices, are impacting marine biodiversity, particularly among slow-to-reproduce taxa such as elasmobranchs, and specifically sharks. While some fisheries involving sharks are sustainably managed,
Mark de Bruyn +3 more
doaj +1 more source