Results 41 to 50 of about 16,877 (294)

Fishers' interactions with endangered “rhinorays” in Karimunjawa National Park, and factors influencing willingness to engage in pro‐conservation behavior

Conservation Science and Practice
The “rhinorays” (giant guitarfish‐Glaucostegidae and wedgefish‐Rhinidae) are a critically endangered group of “shark‐like rays,” which have experienced steep global population declines in the past decade due to overfishing.
Faqih Akbar Alghozali, Ashma Hanifah, Muhammad Wiralaga Dwi Gustianto, Maula Nadia, Taufiq Qur'rohman, Kinanti Amalia Niloperbowo, Diah P. Suyanto, Muhammad Ichsan, Andhika Prasetyo, Mahardika Rizqi Himawan, Hollie Booth   +10 more
doaj   +1 more source

Elasmobranch bycatch distributions and mortality: Insights from the European tropical tuna purse-seine fishery

Global Ecology and Conservation, 2020
Despite bycatch of elasmobranch (sharks and rays) being a major concern in most fisheries worldwide, there is a lack of knowledge on their spatio-temporal species distribution, biology (life stage and sex-ratios), as well as their at-haulback mortality ...
Lyndsay Clavareau, Philippe S. Sabarros, Lauriane Escalle, Pascal Bach, Francisco J. Abascal, Jon Lopez, Hilario Murua, Pedro J. Pascual Alayon, Maria Lourdes Ramos, Jon Ruiz, Bastien Mérigot   +10 more
doaj   +1 more source

European Shark Fisheries: A Preliminary Investigation into Fisheries, Conversion Factors, Trade Products, Markets and Management Measures [PDF]

, 2007
Recommends new regulations to prevent shark finning -- an illegal practice in which a shark's fins are removed and its carcass dumped at sea -- and stresses the urgent need for effective shark conservation ...
Bernard Seret, Caroline Raymakers, Fabrizio Serena, Jim Ellis, John Carlson, Mario Pinho, Maurice Clarke, Nils Roar Hareide, Sandrine Polti, Sarah Fowler, Shelley Clarke, Sonja Fordham   +11 more
core  

Age and growth of Zapteryx brevirostris (Elasmobranchii: Rhinobatidae) in southern Brazil [PDF]

, 2018
Age and growth studies are fundamental to successful fisheries management. Zapteryx brevirostris (Muller & Henle, 1841) is distributed off the Brazilian continental shelf and this species is assessed as "Vulnerable" in the Red List of the International ...
Carmo, Wanessa P. D., Coelho, Rui, Favaro, Luis Fernando   +2 more
core   +4 more sources

MicroCT reinvestigation of the only articulated fossil anostomid fish reveals synonymy of Arhinolemur Ameghino, 1898 and Megaleporinus Ramirez et al., 2017

The Anatomical Record, EarlyView.
Abstract Arhinolemur scalabrinii† Ameghino, 1898 was originally described as a strepsirrhine primate (Mammalia) but has been recognized as an anostomid fish since 2012. It remains the only extinct anostomid species known from complete cranial material.
Karen M. Panzeri, Humberto L. Andrelino, Sergio Bogan, José P. O'Gorman, Federico Agnolín, Brian L. Sidlauskas, Nahuel Vega, Agustín G. Martinelli, José L. Birindelli   +8 more
wiley   +1 more source

Elasmobranch spatial segregation in the western Mediterranean

Scientia Marina, 2011
Basic information on the distribution and habitat preferences of ecologically important species is essential for their management and protection. This study focuses on the depth related trends and the geographic patterns that shape the community of the ...
Adam Gouraguine, Manuel Hidalgo, Joan Moranta, David M. Bailey, Francesc Ordines, Beatriz Guijarro, María Valls, Carmen Barberá, Aina De Mesa   +8 more
doaj   +1 more source

Sharks - The State of the Science [PDF]

, 2010
The biological characteristics of sharks make them particularly vulnerable to overfishing. They grow slowly, become sexually mature relatively late and produce few offspring.
Alexia C. Morgan
core  

Reproductive cycle, nutrition and growth of captive blue spotted stingray, Dasyatis kuhlii (Dasyatidae) [PDF]

At Burgers' Ocean 7 male and 3 female blue spotted stingrays, Dasyatis kuhlii were born over a period of 4.5 years. This paper describes the experiences of the captive breeding results of this species. The first two young died within 2 days of birth. One
Janse, M., Schrama, J.W.
core   +3 more sources

Shark and ray teeth from the Hauterivian (Lower Cretaceous) of north-east England [PDF]

, 1999
Sampling of hiatal horizons within the Hauterivian part of the Speeton Clay Formation of north-east England has produced teeth of several species of sharks and rays, four of which are previously unnamed.
Mitchell, S.F., Underwood, Charlie J., Veltkamp, K.J.   +2 more
core   +1 more source

The musculature and skeleton of the pelvic fin of the crocodile shark, Pseudocarcharias kamoharai (Matsubara, 1936) (Elasmobranchii: Lamniformes): Morphology and sexual dimorphism

The Anatomical Record, EarlyView.
This work brings new information on the sexual characteristics of the crocodile shark (Pseudocarcharias kamoharai) exploring the pelvic fin musculature, as well as the siphon sac and the musculature and skeleton of the clasper. Our paper is the first to point out clearly the sexual dimorphism related exclusively to the pelvic fin musculature in males ...
Laura F. Mianutti, Kenshu Shimada, João Paulo C. B. da Silva   +2 more
wiley   +1 more source