Results 51 to 60 of about 1,448 (172)

Reproductive biology of the eyespot skate atlantoraja cyclophora (Elasmobranchii: Arhynchobatidae) an endemic species of the southwestern atlantic ocean (34ºs - 42ºS) [PDF]

, 2018
Atlantoraja cyclophora is an endemic skate to the continental shelf of the Southwestern Atlantic Ocean (22ºS-47ºS) and a bycatch species in commercial bottom trawl fisheries. The morphometric relationships, the size at maturity and the reproductive cycle
Colonello, Jorge Horacio, Galíndez, Elena Juana, Macchi, Gustavo Javier, Wehitt, Anahi   +3 more
core   +3 more sources

Vulnerability of Eastern Tropical Pacific chondrichthyan fish to climate change

Global Change Biology, Volume 30, Issue 7, July 2024.
This assessment identifies sharks' vulnerability to climate change in a data‐poor tropical region and suggests management actions. Abstract Climate change is an environmental emergency threatening species and ecosystems globally. Oceans have absorbed about 90% of anthropogenic heat and 20%–30% of the carbon emissions, resulting in ocean warming ...
Florencia Cerutti‐Pereyra, Elizabeth J. Drenkard, Mario Espinoza, Brittany Finucci, Felipe Galván‐Magaña, Ana Hacohen‐Domené, Alexander Hearn, Mauricio E. Hoyos‐Padilla, James T. Ketchum, Paola A. Mejía‐Falla, Ana V. Moya‐Serrano, Andres F. Navia, Diana A. Pazmiño, Deni Ramírez‐Macías, Jodie L. Rummer, Pelayo Salinas‐de‐León, Oscar Sosa‐Nishizaki, Charles Stock, Andrew Chin   +18 more
wiley   +1 more source

Comparative trophic ecology of two sympatric guitarfishes Pseudobatos (Chondrichthyes, Rhinobatidae) from Southeast Brazil, southwestern Atlantic

Journal of Fish Biology, 2022
AbstractThe present study compares the trophic ecology of two guitarfishes (Pseudobatos percellens and Pseudobatos horkelii) from the continental shelf of the São Paulo State, Brazil, caught by the bottom pair trawls between 2007 and 2009. These two sympatric species are under different threat categories, “Vulnerable” and “Critically Endangered ...
Luiza de David Chelotti, Otto Bismarck Fazzano Gadig   +1 more
openaire   +3 more sources

Relative abundance of the shovelnose guitarfish rhinobatos productus (Ayres, 1856) (Pisces: Rhinobatidae) in Bahía Almejas, Baja California Sur, from 1991 to 1995

Ciencias Marinas, 1999
Daily commercial fishing data were used to determine the relative abundance of the shovelnose guitarfish Rhinobatos productus (Ayres, 1856) in Bahía Almejas, Baja California Sur (Mexico), from August 1991 to December 1995.
F Salazar-Hermoso, C Villavicencio-Garayzar   +1 more
doaj   +1 more source

Can denticle morphology help identify southeastern Australian elasmobranchs?

Journal of Fish Biology, Volume 104, Issue 6, Page 1848-1859, June 2024.
Abstract Elasmobranchs are covered in scale‐like structures called dermal denticles, comprising dentine and enameloid. These structures vary across the body of an individual and between species, and are frequently shed and preserved in marine sediments.
Mariah Appleby, Vincent Raoult, Matt K. Broadhurst, Troy Gaston   +3 more
wiley   +1 more source

Fisher perceptions of catch and trade of sharks and rays in Angolan small‐scale fisheries

Aquatic Conservation: Marine and Freshwater Ecosystems, Volume 34, Issue 5, May 2024.
Abstract Small‐scale fisheries ensure food security and employment in Angolan coastal communities. These dynamic, widespread fisheries remain mostly unregulated, with limited data available despite their likely significant impact on marine megafauna. We used an interview‐based survey to investigate local fisher interactions with elasmobranchs (sharks ...
Ana Lúcia Furtado Soares, Rima W. Jabado   +1 more
wiley   +1 more source

Fish biodiversity of Indian Exclusive Economic Zone [PDF]

, 2017
Indian fisheries have a long history, starting with Kautilya’s Arthasastra describing fish as a source for consumption and provide evidence that fishery was a well-established industry in India and fish was relished as an article of diet as early as ...
Joshi, K K, Sethulakshmi, M, Varsha, M S
core  

Nascimento da Raia-viola, Zapteryx brevirostris (Müller & Henle) (Chondrichthyes, Rhinobatidae), em cativeiro [PDF]

Revista Brasileira de Zoologia, 2004
Um exemplar fêmea de Zapteryx brevirostris foi capturada na Ilha Queimada Grande, Itanhaém, São Paulo em 19/II/2002, e transportada para o cativeiro do Núcleo de Pesquisa e Estudo em Chondrichthyes (NUPEC). Em 21/II/2002, a fêmea pariu seis filhotes (três machos e três fêmeas). Este é o primeiro registro de nascimento de Z. brevirostris em cativeiro.
openaire   +3 more sources

Claves taxonómicas para el reconocimiento dentario en taxa del superorden Rajomorphii de Chile (Chondrichthyes, Batoidea) Taxonomic dental keys for the Chilean taxa of the superorder Rajomorphii (Chondrichthyes, Batoidea)

Latin American Journal of Aquatic Research, 2012
Se presenta claves taxonómicas basadas en características morfológicas dentarias externas e internas, que permiten el reconocimiento de cada orden, familia y género de los batoídeos conocidos en Chile. En algunos casos, como en las familias Rhinobatidae,
Sylvia Sáez, Julio Lamilla
doaj  

The reproductive biology of the school shark, Galeorhinus galeus Linnaeus 1758 (Chondrichthyes: Triakidae), from the Maghreb shore (southern Mediterranean) [PDF]

, 2005
The school shark, Galeorhinus galeus, is commonly captured off the Maghreb shore along the Algerian and Tunisian coasts of the southern Mediterranean.
Christian Capapé, Farid Hemida, Hamadi Méjri, Jamila Ben Souissi, Olivier Guélorget   +4 more
core   +1 more source