Results 31 to 40 of about 2,457 (160)

At-vessel mortality and blood biochemical status of elasmobranchs caught in an Australian commercial longline fishery

Global Ecology and Conservation, 2015
This study investigates mortality of sharks in a commercial longline fishery in Australia. To examine the rate and biological, environmental and technological factors contributing to at-vessel mortality, four setlines with 120 gangions possessing ‘hook ...
Paul A. Butcher, Victor M. Peddemors, John W. Mandelman, Shane P. McGrath, Brian R. Cullis   +4 more
doaj   +1 more source

Connecting post-release mortality to the physiological stress response of large coastal sharks in a commercial longline fishery.

PLoS ONE, 2021
Bycatch mortality is a major factor contributing to shark population declines. Post-release mortality (PRM) is particularly difficult to quantify, limiting the accuracy of stock assessments.
Nicholas M Whitney, Karissa O Lear, John J Morris, Robert E Hueter, John K Carlson, Heather M Marshall   +5 more
doaj   +1 more source

Identification of Shark Fin Using 12S rRNA Gene Marker(利用12S rRNA基因标记鉴定鱼翅真伪) [PDF]

Shipin kexue jishu xuebao, 2017
To detect authenticity and species of 23 suspected shark fin samples. DNAs from either shark fin or shark fin derived soup were extracted, and then 12S rRNA gene of mitochondrial DNA that was special for animal species identification was amplified.
HUANG Yalin(黄娅琳)
doaj   +1 more source

Analysis of permanent magnets as elasmobranch bycatch reduction devices in hook-and-line and longline trials [PDF]

, 2011
Previous studies indicate that elasmobranch fishes (sharks, skates and rays) detect the Earth’s geomagnetic field by indirect magnetoreception through electromagnetic induction, using their ampullae of Lorenzini. Applying this concept, we evaluated the
Abel, Daniel C., O'Connell, Craig P., Rice, Patrick H., Stroud, Eric M.   +3 more
core  

Insights into the structure of grey reef shark aggregation, Carcharhinus amblyrhynchos (Bleeker, 1856), in two distinct channels of the Maldivian archipelago, Indian Ocean

Journal of Fish Biology, EarlyView.
Abstract The grey reef shark Carcharhinus amblyrhynchos is one of the most frequently encountered reef‐associated shark species in the Maldives, yet very little is known about its local size structure or population dynamics. This study provides new insights into two aggregations of C.
Andrea Parmegiani, Jacopo Gobbato, Rilwan Yoosuf, Davide Seveso, Paolo Galli, Andrew Darren Whitehead, Yameen Ismail, Simone Montano   +7 more
wiley   +1 more source

Anthropogenic disturbance modifies spatial patterns of reef sharks

Journal of Applied Ecology, Volume 63, Issue 4, April 2026.
Species‐specific sensitivities mean that non‐extractive human presence can strongly reshape reef predator distributions even where fishing pressure is limited. Integrating tourism intensity and coastal development into marine spatial planning is therefore essential for reef shark conservation, and combining ecological surveys with open‐source social ...
Twan Stoffers, Jimmy van Rijn, Martin de Graaf, Hendrik V. Winter, Tadzio Y. Bervoets, Mark E. Bond, Chris C. Duinmeijer, Michael Heithaus, Matthew Needle, Georgios Papageorgiou, Jan Jaap Poos, Stijn Schep, Koen Tieskens, Leopold A. J. Nagelkerke   +13 more
wiley   +1 more source

Assessment of the Distribution and Abundance of Coastal Sharks in the U.S. Gulf of Mexico and Eastern Seaboard, 1995 and 1996 [PDF]

, 1997
During 1995 and 1996, the National Marine Fisheries Service (NMFS), conducted pilot studies to develop survey methodology and a sampling strategy for assessment of coastal shark populations in the Gulf of Mexico and western North Atlantic.
Grace , Mark, Henwood, Terry
core  

Multiple paternity and hybridization in two smooth-hound sharks [PDF]

, 2015
Multiple paternity appears to be a common trait of elasmobranch mating systems, with its occurrence likely driven by convenience, due to females seeking to minimize the stress of male harassment.
Gristina, Michele, Marino, ILARIA ANNA MARIA, Mazzoldi, Carlotta, Rasotto, MARIA BERICA, Riginella, Emilio, Zane, Lorenzo   +5 more
core   +1 more source

The Dynamic Nature of Nearshore Shark Nurseries in the Northern Gulf of Mexico

Journal of Biogeography, Volume 53, Issue 4, April 2026.
ABSTRACT Aim Some habitats serve particularly important functions for wildlife. Identifying and appropriately managing these ‘essential habitats’ is critical, especially for wildlife that have faced severe population declines like sharks. Nursery habitats aid in the survival and development of juvenile sharks, which until recently were not formally ...
Philip Matich, Lindsay L. Mullins, Jeffrey D. Plumlee, Mark R. Fisher, John Mareska, J. Marcus Drymon   +5 more
wiley   +1 more source

Spatiotemporal and Environmental Effects on Demersal Fishes Along the Nearshore Texas Continental Shelf

Fishes
The goal of this study was to analyze data from a 10-year bottom longline survey to examine spatial, temporal, and environmental effects on demersal fishes along the Texas coast within the northwestern Gulf of Mexico.
Erin M. Johnson, Fernando Martinez-Andrade, P. Santiago Domínguez-Sánchez, Aurora Gaona-Hernandez, Chengxue Li, R. J. David Wells   +5 more
doaj   +1 more source