Results 21 to 30 of about 3,346 (204)
A socio‐psychological approach for understanding and managing bycatch in small‐scale fisheries
People and Nature, 2023 Fisheries bycatch is the greatest threat to migratory, long‐lived marine animals. Addressing bycatch ultimately requires changing fisher behaviour, yet social and behavioural sciences are rarely applied to bycatch mitigation, with an absence of theory ...
Hollie Booth +6 more
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Catch Composition, Seasonality, and Biological Aspects of Sharks Caught in the Ecuadorian Pacific
Diversity, 2022 Although sharks have a fundamental role in maintaining the balance of aquatic ecosystems, exerting a great influence on lower levels of the food chain, their populations are declining worldwide due, to a large extent, to overfishing.
Jesús Briones-Mendoza +2 more
doaj +1 more source
Twins! Microsatellite analysis of two embryos within one egg case in oviparous elasmobranchs.
PLoS ONE, 2019 Elasmobranchs display various reproductive modes, which have been key to their evolutionary success. In recent decades there has been a rise in the number of reported cases of foetal abnormalities including fertilised, double-embryos held within one egg ...
Samantha A Hook +6 more
doaj +1 more source
Frontiers in Marine Science, 2017 A vulnerable species group, such as, the elasmobranchs, in a data-deficient context presents a complicated management problem. Evidence suggests that the Azores islands, a remote archipelago on the Mid-Atlantic Ridge, serve essential functions in the ...
Diya Das +3 more
doaj +1 more source
Animals, 2022 Acute-stress situations in vertebrates induce a series of physiological responses to cope with the event. While common secondary stress responses include increased catabolism and osmoregulatory imbalances, specific processes depend on the taxa.
Ignacio Ruiz-Jarabo +5 more
doaj +1 more source
Low abundance of sharks and rays in baited remote underwater video surveys in the Arabian Gulf
Scientific Reports, 2018 Data on the diversity and relative abundance of elasmobranchs (sharks and rays) in the Arabian Gulf have been limited to fishery-dependent monitoring of landing sites.
Rima W. Jabado +3 more
doaj +1 more source
Fishes, 2023 Morphological differences in the peripheral (sensory) and central (brain) nervous system may confer sensory and/or behavioral variation in elasmobranchs, both across taxa and throughout ontogeny.
Emily E. Peele +4 more
doaj +1 more source
Elasmobranch bycatch in the Italian Adriatic pelagic trawl fishery.
PLoS ONE, 2018 Elasmobranchs are among the most threatened long-lived marine species worldwide, and incidental capture is a major source of mortality. The northern central Adriatic Sea, though one of the most overfished basins of the Mediterranean Sea, supports a very ...
Sara Bonanomi +4 more
doaj +1 more source
First reports of Megamouth Shark, Megachasma pelagios Taylor, Compagno & Struhsaker, 1983 (Lamniformes, Megachasmidae), in Peru [PDF]
Check List, 2020 Megamouth Shark, Megachasma pelagios Taylor, Compagno & Struhsaker, 1983, is one of the least-known shark species worldwide. We report the encounters of four megamouth sharks: one caught in a driftnet off Piura (November 2016; sex indeterminate),
Shaleyla Kelez +4 more
doaj +3 more sources
Osmoregulation in Elasmobranchs [PDF]
American Zoologist, 1977 Osmoregulatory mechanisms were examined in major groups of fishes including hagfish, holocephalans, elasmobranchs, the coelacanth, and ray-fin fishes. Four main patterns of body fluid composition emerged. These represent the three main osmoregulatory processes in the marine environment and the one in fresh water.
PETER K. T. PANG +2 more
openaire +1 more source