Results 61 to 70 of about 524 (160)

Retention Bans Are Beneficial but Insufficient to Stop Shark Overfishing

Fish and Fisheries, Volume 26, Issue 3, Page 473-487, May 2025.
ABSTRACT Sharks are among the most threatened groups of exploited fishes, comprising common bycatch across many fisheries. Management efforts intended to safeguard threatened species have increasingly focused on retention bans to reduce bycatch mortality. However, the population effects of such measures remain unevaluated across species.
Leonardo Manir Feitosa, Alicia M. Caughman, Nidhi G. D'Costa, Sara Orofino, Echelle S. Burns, Laurenne Schiller, Boris Worm, Darcy Bradley   +7 more
wiley   +1 more source

Edad y crecimiento del tiburón gatuzo Mustelus schmitti (Carcharhiniformes, Triakidae) en aguas costeras de la provincia de Chubut, Patagonia, Argentina

Ecología Austral
El gatuzo, Mustelus schmitti (Carcharhiniformes, Triakidae) es un tiburón endémico del Océano Atlántico Sudoccidental y está catalogado como en peligro crítico por la UICN. La edad y el crecimiento de M.
Ximena Navoa, Nelson D. Bovcon, Matías Suárez, Alessandra Pasti, Kevin J. Jacobi, Marina Coller, Gustavo E. Chiaramonte   +6 more
doaj   +1 more source

Sexual dimorphism in chain catshark, Scyliorhinus retifer (Elasmobranchii, Carcharhiniformes, Scyliorhinidae): Morphology and dermal denticles evidence [PDF]

Acta Ichthyologica et Piscatoria
We studied the morphological variation of the chain dogfish, Scyliorhinus retifer (Garman, 1881), to demonstrate sexual dimorphism based on 15 adult males {434–557 mm total length (TL)} and 10 adult females (437–556 mm TL) captured in the southern Gulf ...
Mónica Jimena Juárez-Maldonado, Luis Fernando Del Moral-Flores   +1 more
doaj   +3 more sources

Predicting time‐at‐depth weighted biodiversity patterns for sharks of the North Pacific

Ecography, Volume 2025, Issue 3, March 2025.
Depth is a fundamental and universal driver of ocean biogeography but it is unclear how the biodiversity patterns of larger, more mobile organisms change as a function of depth. Here, we developed a predictive biogeography model to explore how information of mobile species' depth preferences influence biodiversity patterns.
Zachary A. Siders, Lauren B. Trotta, William Patrone, Fabio P. Caltabellotta, Katherine B. Loesser, Benjamin Baiser   +5 more
wiley   +1 more source

Design and Validation of an Open–Close Device for Integrated Environmental DNA Sampling Detects A Depth Gradient in Indian Ocean Deep‐Sea Fish Assemblages

Ecology and Evolution, Volume 15, Issue 2, February 2025.
The goal of this study was to leverage existing survey technology to design and test an eDNA sampler that captures an integrated eDNA sample over the length of a deep‐water transect. We provide a biological interpretation of the resulting data, demonstrating the usefulness of such technology to understand the ocean environments, using fish species as ...
Cindy Bessey, Andrew Martini, Alasdair Currie, Will Ponsonby, Aaron Tyndall, Ryan Crossing, Vinícius Werneck Salazar, Kathryn L. Dawkins, John J. Pogonoski, Glenn Moore, Nick Mortimer, John K. Keesing   +11 more
wiley   +1 more source

PROBLEMATIC IDENTITY OF THE SMALLEYE HAMMERHEAD (CARCHARHINIFORMES: SPHYRNA) OCCURRING IN COLOMBIA

Bulletin of Marine and Coastal Research, 2016
The presence of Sphyrna tudes in Colombian waters is supported by a 506 mm total length male collected in the southernmost corner of the Caribbean Sea, the mouth of Atrato river. A short discussion on the confusing taxonomic and nomenclatural history of the smalleye hammerhead is included.
Arturo Acero P., Diego Cánter Ríos†, Andrea Polanco F.   +2 more
openaire   +1 more source

Drivers and rates of stock assessments in the United States.

PLoS ONE, 2018
Fisheries management is most effective when based on scientific estimates of sustainable fishing rates. While some simple approaches allow estimation of harvest limits, more data-intensive stock assessments are generally required to evaluate the stock's ...
Philipp Neubauer, James T Thorson, Michael C Melnychuk, Richard Methot, Kristan Blackhart   +4 more
doaj   +1 more source

БИОСТРАТИГРАФИЯ И ИЗМЕНЕНИЕ ПАЛЕОБИОТЫ НА ГРАНИЦЕ ПАЛЕОЦЕНА И ЭОЦЕНА В РАЗРЕЗЕ ПЕРШИНСКИЙ (СРЕДНЕЕ ЗАУРАЛЬЕ)

Литосфера, 2019
Выполнено описание разреза и биостратиграфическое расчленение палеогеновых отложений в разрезе Першинский, расположенном в южной части Среднего Зауралья (Курганская область). Проанализированы изменения состава морской микро- (динофлагеллаты) и макробиоты

doaj  

First eDNA-based record of Carcharhinus melanopterus (Quoy & Gaimard, 1824) (Carcharhiniformes, Carcharhinidae) from Mantanani Island, Sabah, Malaysia [PDF]

Check List
The first molecular occurrence record of the Blacktip Reef Shark, Carcharhinus melanopterus (Quoy & Gaimard, 1824), is documented from Mantanani Island, Sabah, Malaysia, based on environmental DNA (eDNA) metabarcoding.
Cheng Ann Chen, Wei-Ling Ng, Juanita Joseph, Muhamad Arif Ng Abdullah, Tadashi Kajita   +4 more
doaj   +3 more sources

Revealing elasmobranch diversity across the Cretaceous-Paleogene boundary in the Central Tethys (Byala, Bulgaria) [PDF]

Fossil Record
Extensive bulk-sampling of the continuous K-Pg succession at Byala (Central Tethys) provides high-resolution insights into elasmobranch responses to the end-Cretaceous mass extinction of a deep-marine environmental setting. The studied section represents
Iris Feichtinger, Bernhard Beaury, Guillaume Guinot, Mathias Harzhauser, Thomas Nichterl, Kristalina Stoykova, Jürgen Pollerspöck   +6 more
doaj   +3 more sources