Results 51 to 60 of about 8,625 (225)

Insights from three decades of IUCN Red List assessments catalyzing shark, ray, and chimaera conservation

Conservation Biology, EarlyView.
Abstract The International Union for Conservation of Nature (IUCN) Red List of Threatened Species is a critical measure of global aquatic and terrestrial biodiversity status. It is also the basis for the Red List Index, which tracks extinction risk over time.
Brittany Finucci, Cassandra L. Rigby, Nicholas K. Dulvy, Rachel D. Cavanagh, Sarah Fowler, Lucy R. Harrison, Julia M. Lawson, Riley Pollom, Colin A. Simpfendorfer, Rachel H. L. Walls, Rima W. Jabado   +10 more
wiley   +1 more source

Residency and Space Use of Endangered Smoothhound Sharks (Mustelus mustelus) in Relation to Marine Protection and Demersal Longline Fishing Along South Africa's South Coast

Fisheries Management and Ecology, EarlyView.
ABSTRACT Shark populations are declining globally and the effectiveness of marine protected areas (MPAs) as a conservation tool may vary by species and environmental context. This study assessed space use and residency of smoothhound sharks (Mustelus mustelus)—an endangered, yet highly exploited shark—in relation to spatial protection and fishing risk ...
Eugin Bornman, Taryn S. Murray, Neil Hammerschlag, Enrico Gennari   +3 more
wiley   +1 more source

Mesobathic chondrichthyes of the Juan Fernández seamounts: are they different from those of the central Chilean continental slope?

Revista de Biología Tropical, 2008
We compared the geographic distribution of groups of chondrychthid fishes of two physically proximal, although geographically different, regions that include the Juan Fernández seamounts and the central Chilean continental slope, both sampled at ...
Isabel Andrade, Germán Pequeño
doaj   +2 more sources

An investigation into the diet of elephant fish (Callorhinchus milii) in the waters of Aotearoa/New Zealand

Journal of Fish Biology, EarlyView.
Abstract Chondrichthyans (sharks, rays and chimaeras) are increasingly understood to be an important part of ocean ecosystems, but their ecological role is unclear. Callorhinchus milii (elephant fish) is a chimaera species endemic to Aotearoa/New Zealand and southern Australian waters.
Kat U. C. Cooper, Ashley A. Rowden, Darren Stevens, Brittany Finucci   +3 more
wiley   +1 more source

Holocephali de la Formación Irati (Cuenca del Paraná), Brasil: Origen, Consideraciones Paleogeográficas y Paleoambientales

Estudios Geologicos, 2023
La Formación Irati (Pérmico, Cisuraliano) tiene varios tipos de vertebrados acuáticos, incluyendo especies de Chondrichthyes. Se reconocen dos miembros de Irati, Assistência (superior) y Taquaral (inferior).
Artur Chahud
doaj   +1 more source

Diversity and Conservation Knowledge of Chondrichthyans in Northern Coastal Areas of Central Java

Biosaintifika: Journal of Biology & Biology Education, 2018
Northern coastal areas of Central Java potentially produces sharks and rays (Chondrichthyes) for dishes. However, lack of community understanding of protected species catchment affects the Chondrichthyans conservation management.
Ning Setiati, Endah Peniati, Partaya Partaya   +2 more
doaj   +1 more source

Tooth morphology of deep‐water catsharks of the genus Apristurus (Chondrichthyes: Pentanchidae) in the North Atlantic Ocean

Journal of Fish Biology, EarlyView.
Abstract The deep‐water catshark family (Pentanchidae) is the most species‐rich family among extant shark lineages. Within this family, the genus Apristurus is the largest, comprising small, deep‐sea species characterised by elongated bodies and dorso‐ventrally compressed snouts. Five Apristurus species are currently recognised from the North Atlantic,
Jesco Seifert, Daniel M. Moore
wiley   +1 more source

Danger on the plate: human health risks derived from the consumption of angular angelshark (Squatina guggenheim) meat in southeastern Brazil

Frontiers in Toxicology
IntroductionShark and ray species are particularly vulnerable to pollutant bioaccumulation, including metals and metalloids, due to their k-strategist characteristics and mid–high trophic level.
Amanda Pontes Lopes, Amanda Pontes Lopes, Rebeca Dias de Souza Coutinho, Rebeca Dias de Souza Coutinho, Tatiana Dillenburg Saint’Pierre, Rachel Ann Hauser-Davis   +5 more
doaj   +1 more source

Ontogenetic Development of Hyperostosis in the Crevalle Jack Caranx hippos (Linnaeus, 1766) and New Records of Affected Bone Regions

Journal of Fish Diseases, EarlyView.
ABSTRACT Hyperostosis is a non‐pathological condition widely reported in marine teleosts, yet its developmental dynamics and underlying drivers remain poorly understood. This study investigates the ontogenetic progression and anatomical distribution of hyperostosis in Caranx hippos based on a growth series of 39 specimens collected along the Brazilian ...
Camila Vitória Gonçalves Ferreira, Davi Lettieri Santos dos Abrahão, Alice Miranda Cardoso de‐Sá, Alice Barbosa Henriques, Ana Julia Araujo Rosa D’ Almeida Lima, Maykon Victor Rezende de Oliveira, Márcia Carolina Salomão, Helena Passeri Lavrado, Fernando Augusto Pereira Tuna   +8 more
wiley   +1 more source

Ecological and biological factors associated to mercury accumulation in batoids (Chondrichthyes: Batoidea) from northeastern Brazil.

Marine Pollution Bulletin, 2020
The present study aims to understand how ecological and biological factors affect the Hg levels in stingrays occurring in the Northeastern Brazilian coast.
V. L. Moura, Júlia Nunes Rabelo, M. F. Bezerra, G. Silva, V. V. Faria, C. Rezende, W. Bastos, L. D. Lacerda   +7 more
semanticscholar   +1 more source