Results 61 to 70 of about 6,079 (252)

Global distribution of aquatic animal telemetry effort reveals geographic biases and opportunities for more inclusive tracking studies

Conservation Science and Practice, EarlyView.
Despite broad global distribution of aquatic telemetry studies, important biogeographic regions remain poorly investigated. The most important variables correlated with the distribution of telemetry studies were political stability, conservation funding, number of scientific documents, and English as a first language.
S. T. Kessel, M. Auger‐Méthé, A. P. Barbosa Martins, S. J. Cooke, A. T. Fisk, A. L. Haley, M. R. Heupel, N. V. Klinard, J. K. Matley, M. L. Piczak, J. A. Robichaud, N. E. Hussey   +11 more
wiley   +1 more source

Evolution and ecology of feeding in elasmobranchs [PDF]

Integrative and Comparative Biology, 2007
Paleozoic chondrichthyans had a large gape, numerous spike-like teeth, limited cranial kinesis, and a non-suspensory hyoid, suggesting a feeding mechanism dominated by bite and ram. Modern sharks are characterized by a mobile upper jaw braced by a suspensory hyoid arch that is highly kinetic.
Cheryl D, Wilga, Philip J, Motta, Christopher P, Sanford   +2 more
openaire   +2 more sources

Impacts of Ocean Acidification on Reproduction and Early Life Development in Marine Teleost Fish—A Synthesis

Fish and Fisheries, EarlyView.
ABSTRACT Ocean acidification (OA) remains a major and underexplored threat to marine fishes, particularly regarding reproductive physiology and early life stages (ELS). Although research over the past 15 years has documented diverse OA effects, substantial knowledge gaps persist.
Rebecca J. Bridge, Benjamin T. McClelland, Silvana N. R. Birchenough, Martina H. Stiasny   +3 more
wiley   +1 more source

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

, 2010
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   +1 more source

Post‐Release Survival of the Pelagic Stingray (Pteroplatytrygon violacea, Bonaparte, 1832) in French Longline Fisheries in the Northwestern Mediterranean Sea

Fisheries Management and Ecology, EarlyView.
ABSTRACT Bycatch remains a critical challenge in global fisheries, even when using selective gears such as longlines. In the French longline fishery targeting Atlantic bluefin tuna (Thunnus thynnus) in the Gulf of Lion, the common pelagic stingray (Pteroplatytrygon violacea) is the primary bycatch species.
Antoine Landreau, Vincent Kerzérho, Olivier Derridj, Bertrand Wendling, Nolwenn Cosnard, Tristan Rouyer   +5 more
wiley   +1 more source

Giants in the cold: Morphological evidence for vascular heat retention in the viscera but not the skeletal muscle of the basking shark (Cetorhinus maximus)

Journal of Fish Biology, EarlyView.
Abstract Fewer than 50 of the over 30,000 extant species of fishes have developed anatomical specializations facilitating endothermy in specific body regions. The plankton‐feeding basking shark (Cetorhinus maximus), traditionally classified as an ectotherm, was recently shown to have regionally endothermic traits such as centralized red muscle (RM ...
C. Antonia Klöcker, Axel Schlindwein, Martin C. Arostegui, Ingrid M. Bruvold, Joel V. Wernström, Montserrat Martin‐Armas, David W. Sims, Nicolas Straube, Andreas Altenburger, Claudia Junge   +9 more
wiley   +1 more source

Specific setup and methodology for computer-assisted sperm analysis (CASA) in evaluating elasmobranch sperm

Theriogenology Wild
1. One-third of elasmobranch species are threatened with extinction, and the precise assessment of their sperm parameters and quality is one stage in the development of reproductive technology for animal conservation. 2. Computer-Assisted Sperm Analysis (
Pedro Nacib Jorge-Neto, Fabio de Moraes Francisco, Mario Davi Dias Carneiro, Sergio Ricardo Brito Santos, Letícia Alecho Requena, Sofia Dressel Ramos, Matheus Felix de Goés, Rafael Franco Valle, Fabiana Lucia André Padilha, Helen Colbachini, Rafael Caprioli Gutierrez, Larissa Schneider Brandão Souza, Verônica Takatsuka Manoel, Laura Chrispim Reisfeld, Thyara Deco-Souza, Roberta Ferreira Leite, Cristiane Schilbach Pizzutto   +16 more
doaj   +1 more source

Unravelling the skin of the nurse shark: A morphological description of the placoid scales of Ginglymostoma cirratum

Journal of Fish Biology, EarlyView.
Abstract Ginglymostoma cirratum, commonly known as the nurse shark, is a nocturnally active benthic shark, often found in western and eastern Atlantic waters. Although this shark has been well explored in many biological aspects, few studies have thoroughly examined the morphology of its dermal denticles (or placoid scales).
Danilo P. Lima, Aline. N. Poscai, Laura F. Mianutti, Nathalie. M. R. de Abreu, Jade Medeiros, Marcus V. G. Araújo, Frederico. B. de Sousa, João Paulo C. B. da Silva   +7 more
wiley   +1 more source

Fishing profile and commercial landings of shark and batoids in a global elasmobranchs conservation hotspot [PDF]

Anais da Academia Brasileira de Ciências
This paper describes the fishing profile and the temporal variation in the commercial landings of elasmobranchs in a global hotspot for their conservation and investigates the variables that influenced the landings. Census data on commercial catches were
ÍTALO LUTZ, PAULO EMÍLIO SANTOS, RODRIGO CAMPOS, CLAUDIA ANTÔNIA C.R. DE OLIVEIRA, NATASCHA WOSNICK, GRAZIELLE EVANGELISTA-GOMES, MIGUEL PETRERE JR, BIANCA BENTES   +7 more
doaj   +1 more source

Repeatability of baited remote underwater video station (BRUVS) results within and between seasons.

PLoS ONE, 2020
Baited remote underwater video stations (BRUVS) are increasingly being used to evaluate and monitor reef communities. Many BRUVS studies compare multiple sites sampled at single time points that may differ from the sampling time of another site. As BRUVS
C Samantha Sherman, Michelle R Heupel, Mohini Johnson, Muslimin Kaimuddin, L M Sjamsul Qamar, Andrew Chin, Colin A Simpfendorfer   +6 more
doaj   +1 more source