Results 51 to 60 of about 1,071 (190)

Intensive Commercialization of Endangered Sharks and Rays (Elasmobranchii) Along the Coastal Amazon as Revealed by DNA Barcode

open access: yesFrontiers in Marine Science, 2021
Elasmobranchs represent a well-defined group, composed of about 1,150 species inhabiting diverse aquatic environments. Currently, several of these species have been classified as threaten due to overexploitation.
Thais Martins   +7 more
doaj   +1 more source

Complete mitochondrial genome of the gray reef shark, Carcharhinus amblyrhynchos (Carcharhiniformes: Carcharhinidae)

open access: yesMitochondrial DNA. Part B. Resources, 2020
We report the first mitochondrial genome sequences for the gray reef shark, Carcharhinus amblyrhynchos. Two specimens from the British Indian Ocean Territory were sequenced independently using two different next generation sequencing methods, namely ...
Nicholas Dunn   +7 more
doaj   +1 more source

Dental crown morphological variation and heterodonty in carcharhiniform sharks

open access: yesThe Anatomical Record, EarlyView.
Abstract Elasmobranch teeth are highly mineralized structures that constitute the majority of the fossil record for this group. Despite their taxonomic and evolutionary significance, detailed descriptions of dental morphology remain scarce. The order Carcharhiniformes, the most diverse among sharks, comprises 304 valid species that display remarkable ...
Flávia Zanini, Karla D. A. Soares
wiley   +1 more source

Carcharhinidae Jordan & Evermann 1896

open access: yes, 2023
Family Carcharhinidae Jordan & Evermann 1896 (Fig. 2A). Requiem Sharks, Blue Sharks, Lemon Sharks, Sharpnose Sharks, Tiger Sharks, Whitenose Sharks, Whitetip Sharks; Cazones, Tintoreras, Tiburones Description: Body elongate and robust; up to 740 cm in length; nostrils without barbels or grooves; nictitating eyelids internal; mouth large, arched ...
Angulo, Arturo   +7 more
openaire   +1 more source

Rayas y tiburones como fauna acompañante en las pesquerías de camarón: una revisión.

open access: yesRevista de Investigaciones Marinas, 2023
Se presenta una revisión sobre los elasmobranquios en la pesquería de arrastre de camarón. La fauna acompañante de camarón (FAC) está compuesta por una gran diversidad de especies en la que predominan los peces.
Alejandra Briones Bell-lloch   +2 more
doaj  

Phage Diving: An Exploration of the Carcharhinid Shark Epidermal Virome

open access: yesViruses, 2022
The epidermal microbiome is a critical element of marine organismal immunity, but the epidermal virome of marine organisms remains largely unexplored. The epidermis of sharks represents a unique viromic ecosystem.
Ryan D. Hesse   +10 more
doaj   +1 more source

The Unseen Crisis of Sharks and Rays in Senegal

open access: yesEcology and Evolution, Volume 16, Issue 4, April 2026.
This study presents a conservative quantitative assessment of shark and ray landings and trade in Senegal, revealing extensive exploitation of threatened species. Surveys at two major artisanal processing sites in the Casamance region recorded over 170,000 individuals, mostly rays, with nearly all biomass comprising species at risk of extinction, and ...
Rima W. Jabado   +3 more
wiley   +1 more source

Field guide to requiem sharks (Elasmobranchiomorphi: Carcharhinidae) of the Western North Atlantic [PDF]

open access: yes, 2001
Identification problems are common for many sharks due to a general lack of meristic characteristics that are typically useful for separating species. Other than number of vertebrae and number and shape of teeth, identifications are frequently based on ...
Grace, Mark
core   +2 more sources

Carcharhinidae

open access: yes, 2008
Published as part of Wirtz, Peter, Fricke, Ronald & Biscoito, Manuel José, 2008, The coastal fishes of Madeira Island — new records and an annotated check-list, pp.
Wirtz, Peter   +2 more
openaire   +2 more sources

Optimizing a Novel eDNA‐Based Framework for Reef Fish Biodiversity Monitoring Using an Autonomous Filtration System and in situ Nanopore Sequencing

open access: yesEcology and Evolution, Volume 16, Issue 3, March 2026.
This study presents a comprehensive eDNA metabarcoding protocol optimized for monitoring fish biodiversity in coral reefs and other remote marine environments. By combining an autonomous underwater filtration system, Oxford Nanopore sequencing, and a 12S reference database specifically developed for French Polynesia, the method enables efficient and ...
Lucie Cartairade   +5 more
wiley   +1 more source

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