Results 21 to 30 of about 414 (137)

Vulnerability Assessment of Pelagic Sharks in the Western North Pacific by Using an Integrated Ecological Risk Assessment

open access: yesAnimals, 2021
The vulnerability of 11 pelagic shark species caught by the Taiwanese coastal and offshore longline fisheries in the western North Pacific were assessed by an ecological risk assessment (ERA) and 10 of the 11 species was assessed by using an integrated ...
Kwang-Ming Liu   +3 more
doaj   +1 more source

Thresher sharks (Alopiidae) catch in the pelagic fisheries of Western Indonesia

open access: yesIOP Conference Series: Earth and Environmental Science, 2020
Abstract Thresher sharks (family Alopiidae) are an evolutionarily distinct and globally endangered species group. Indonesia is the world’s largest shark fishing nation, and a global priority for reducing the capture of threatened shark species.
M Ichsan   +4 more
openaire   +1 more source

Concentrations and stable isotopes of mercury in sharks of the Galapagos Marine Reserve: Human health concerns and feeding patterns

open access: yesEcotoxicology and Environmental Safety, 2021
The human ingestion of mercury (Hg) from sea food is of big concern worldwide due to adverse health effects, and more specifically if shark consumption constitutes a regular part of the human diet.
Laurence Maurice   +9 more
doaj   +1 more source

Diel Vertical Habitat Use Observations of a Scalloped Hammerhead and a Bigeye Thresher in the Northern Gulf of Mexico

open access: yesFishes, 2022
Understanding habitat use of elasmobranchs in pelagic environments is complicated due to the mobility of these large animals and their ability to move great distances in a three-dimensional environment.
Taylor Anderson   +6 more
doaj   +1 more source

Habitat use and diel vertical migration of bigeye thresher shark: Overlap with pelagic longline fishing gear [PDF]

open access: yesMarine Environmental Research, 2015
Pelagic longliners targeting swordfish and tunas in oceanic waters regularly capture sharks as bycatch, including currently protected species as the bigeye thresher, Alopias superciliosus. Fifteen bigeye threshers were tagged with pop-up satellite archival tags (PSATs) in 2012-2014 in the tropical northeast Atlantic, with successful transmissions ...
Coelho, Rui   +2 more
openaire   +3 more sources

Shark conservation hindered by lack of habitat protection

open access: yesGlobal Ecology and Conservation, 2020
Many of the world’s shark populations are in decline, indicating the need for improved conservation and management. Well managed and appropriately located marine parks and marine protected areas (MPAs) have potential to enhance shark conservation by ...
Charlotte A. Birkmanis   +4 more
doaj   +1 more source

Feeding behavior and trophic interaction of three shark species in the Galapagos Marine Reserve [PDF]

open access: yesPeerJ, 2018
There is great concern about the future of sharks in Ecuador because of the lack of biological knowledge of most species that inhabit the region. This paper analyzes the feeding behavior of the pelagic thresher shark (Alopias pelagicus), the blue shark ...
Diego Páez-Rosas   +3 more
doaj   +2 more sources

Thresher sharks use tail-slaps as a hunting strategy.

open access: yesPLoS ONE, 2013
The hunting strategies of pelagic thresher sharks (Alopias pelagicus) were investigated at Pescador Island in the Philippines. It has long been suspected that thresher sharks hunt with their scythe-like tails but the kinematics associated with the ...
Simon P Oliver   +4 more
doaj   +1 more source

Cleaner wrasse forage on ectoparasitic digeneans (phylum Platyhelminthes) that infect pelagic thresher sharks (Alopias pelagicus) [PDF]

open access: yesMarine Biodiversity, 2014
The cleaning system is a classic model for cooperative behaviour among species in which cleaner fish or shrimps remove parasites and/or dead tissue from clients that pose at stations to solicit services from them (Cote 2000). Sharks, including pelagic thresher sharks, host a variety of ectoparasites that may affect their health and fitness (Oliver et ...
Cadwallader, Helen F.   +2 more
openaire   +2 more sources

Estimating Finite Rate of Population Increase for Sharks Based on Vital Parameters. [PDF]

open access: yesPLoS ONE, 2015
The vital parameter data for 62 stocks, covering 38 species, collected from the literature, including parameters of age, growth, and reproduction, were log-transformed and analyzed using multivariate analyses.
Kwang-Ming Liu   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy