Results 1 to 10 of about 3,230 (138)

The Phenomenon of Piebaldism in Sharks: A Review of Global Sightings and Patterns [PDF]

open access: yesEcology and Evolution
Chromatic disorders in elasmobranchs (sharks and rays) have been reported in several species, but little is known about their true abundance or consequences for survival and fitness.
Darren A. Whitehead   +9 more
doaj   +2 more sources

Complete mitochondrial genome and phylogenetic analysis of the copper shark Carcharhinus brachyurus (Günther, 1870) [PDF]

open access: yesMitochondrial DNA. Part B. Resources, 2021
Copper shark (Carcharhinus brachyurus Günther, 1870) is one of the most widely distributed but least known species in the family Carcharhinidae. Herein, we report the first complete mitogenome of C. brachyurus.
Sang Wha Kim   +11 more
doaj   +2 more sources

Characterization of the complete mitochondrial genome of blacktip shark Carcharhinus limbatus (Carcharhiniformes: Carcharhinidae) [PDF]

open access: yesMitochondrial DNA. Part B. Resources, 2022
In this study, we aimed to determine the complete mitochondrial genome of blacktip shark Carcharhinus limbatus. The mitochondrial genome was 16,705 bp in length, including 13 protein-coding genes, 22 tRNA genes, 2 rRNA genes, and a control region ...
Xiaolin Huang   +4 more
doaj   +2 more sources

New Occurrences of the Tiger Shark (Galeocerdo cuvier) (Carcharhinidae) off the Coast of Rio de Janeiro, Southeastern Brazil: Seasonality Indications [PDF]

open access: yesAnimals, 2022
The tiger shark Galeocerdo cuvier (Péron & Lesueur, 1822) (Carcharhinidae) is classified as near-threatened along the Brazilian coast, in line with its global categorization.
Izar Aximoff   +6 more
doaj   +2 more sources

Complete mitochondrial genome of the Caribbean reef shark, Carcharhinus perezi (Carcharhinformes: Carcharhinidae) [PDF]

open access: yesMitochondrial DNA. Part B. Resources, 2021
The Caribbean reef shark (Carcharhinus perezi; Poey, 1876) is a medium to large-bodied coastal and reef-associated predator found throughout the subtropical and tropical waters of the Atlantic Ocean and Caribbean Sea, although its populations are ...
Austin J. Gallagher   +3 more
doaj   +2 more sources

Global stock structure of the Silky shark (Carcharhinus falciformis, Carcharhinidae) assessed with high-throughput DNA sequencing [PDF]

open access: yesPeerJ
Silky shark (Carcharhinus falciformis, Carcharhinidae) numbers have declined steeply in recent decades due to the fin fishery and bycatch in pelagic fisheries.
Derek W. Kraft   +11 more
doaj   +3 more sources

Bacterial diversity in the jelly of shark Ampullae of Lorenzini: a holobiont perspective [PDF]

open access: yesPeerJ
The Ampullae of Lorenzini (AoL) are specialized electrosensory organs found in sharks and other chondrichthyans. They allow the detection of electric fields, temperature changes, and salinity variations.
Nataly Bolaño-Martínez   +4 more
doaj   +3 more sources

Rare evidence of shark-on-shark trophic interactions in the fossil record [PDF]

open access: yesActa Palaeontologica Polonica, 2021
Direct evidence of chondrichthyan trophic interactions in the fossil record is largely limited to bite traces on prey items but may also be found within the gut contents of exceptionally well-preserved individuals or as inclusions within coprolites ...
VICTOR J. PEREZ   +2 more
doaj   +1 more source

High overexploitation risk due to management shortfall in highly traded requiem sharks

open access: yesConservation Letters, 2023
Most of the international trade in fins (and likely meat too) is derived from requiem sharks (family Carcharhinidae), yet trade in only two of the 56 species is currently regulated.
C. Samantha Sherman   +8 more
doaj   +1 more source

Shark conservation hindered by lack of habitat protection

open access: yesGlobal Ecology and Conservation, 2020
Many of the world’s shark populations are in decline, indicating the need for improved conservation and management. Well managed and appropriately located marine parks and marine protected areas (MPAs) have potential to enhance shark conservation by ...
Charlotte A. Birkmanis   +4 more
doaj   +1 more source

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