Results 31 to 40 of about 403 (142)

First record of the pelagic thresher shark Alopias pelagicus (Pisces: Alopiiformes: Alopiidae) from the Lakshadweep Sea, India [PDF]

Marine Biodiversity Records, 2012
The pelagic thresher shark Alopias pelagicus is a large, wide-ranging Indo-Pacific Ocean pelagic shark. In this paper, the first record of the pelagic thresher shark, caught from the Lakshadweep Sea is reported. The shark 275 cm in total length was caught by drift longline operation at depth of 60 m in the Lakshadweep Sea (10°52N latitude 72°13E ...
K.V. Aneesh Kumar, S. Paresh Khanolkar, P. Pravin, B. Meenakumari, E.V. Radhakrishnan   +4 more
openaire   +1 more source

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

PLoS 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, Chien-Pang Chin, Chun-Hui Chen, Jui-Han Chang   +3 more
doaj   +1 more source

Trophic shift in the diet of the pelagic thresher shark based on stomach contents and stable isotope analyses [PDF]

Marine Biology Research, 2013
The trophic ecology of the pelagic thresher shark (Alopias pelagicus) was analysed using stomach contents and carbon (δ13C) and nitrogen (δ15N) stable isotope analysis. The sharks were caught in Ecuadorian waters between June and December 2003. Approximately 24 prey species were found in the stomachs of 111 sharks.
Polo Silva, Carlos, Newsome, Seth D., Galván-Magaña, Felipe, Grijalba-Bendeck, Marcela, Sanjuan-Muñoz, Adolfo   +4 more
openaire   +2 more sources

Bioaccumulation of methylmercury within the marine food web of the outer Bay of Fundy, Gulf of Maine. [PDF]

PLoS ONE, 2018
Mercury and methylmercury were measured in seawater and biota collected from the outer Bay of Fundy to better document mercury bioaccumulation in a temperate marine food web.
Gareth Harding, John Dalziel, Peter Vass
doaj   +1 more source

Portuguese commercial fisheries of swordfish, Xiphias gladius

Frontiers in Marine Science, 2014
Swordfish has an important role in Portuguese fisheries. Portuguese commercial swordfish landings were analyzed from 1986 to 2012. Commercial landings of five incidental catches of pelagic sharks (Alopias superciliosus, Alopias vulpinus, Isurus ...
André Roxo Nunes
doaj   +1 more source

The Species and Origin of Shark Fins in Taiwan's Fishing Ports, Markets, and Customs Detention: A DNA Barcoding Analysis.

PLoS ONE, 2016
The increasing consumption of shark products, along with the shark's fishing vulnerabilities, has led to the decrease in certain shark populations. In this study we used a DNA barcoding method to identify the species of shark landings at fishing ports ...
Po-Shun Chuang, Tzu-Chiao Hung, Hung-An Chang, Chien-Kang Huang, Jen-Chieh Shiao   +4 more
doaj   +1 more source

Stereo videography reveals fragility in a high value thresher shark population

Frontiers in Marine Science
Population risk assessments are important tools for understanding the sustainability of shark populations and informing their conservation. In the Philippines, policy makers have made inroads to progress legislative protection for sharks in recent years,
Alp Gokgoz, Alp Gokgoz, Simon P. Oliver, Simon P. Oliver, James Brown, Voltaire Cerna, Voltaire Cerna, Gary Cases, Gary Cases, Andrew Lawrence, Isabelle Faringstam   +10 more
doaj   +1 more source

Mitigating catches of endangered sharks species in small-scale fisheries: a case study on pelagic thresher sharks (Alopias pelagicus Nakamura, 1935) in the eastern Indian Ocean

, 2022
Many shark species (Class Chondrichthyes) are threatened with extinction due to overfishing. Of the >1,000 described Chondrichthyan species, the pelagic thresher sharks (Alopias pelagicus) are of particular conservation priority since they are evolutionarily distinct and globally endangered.
Muhammad Ichsan, Shoimatul Ula, Hollie Booth, null Herman, null Dharmadi   +4 more
openaire   +1 more source

Vulnerability of oceanic sharks as pelagic longline bycatch

Global Ecology and Conservation, 2014
Bycatch (the unintentional catch of non-target species or sizes) is consistently ranked as one of the greatest threats to marine fish populations; yet species-specific rates of bycatch survival are rarely considered in risk assessments. Regulations often
A.J. Gallagher, E.S. Orbesen, N. Hammerschlag, J.E. Serafy   +3 more
doaj   +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