Results 21 to 30 of about 839 (149)

Summarising 40 years of gastric lavage studies to evaluate efficiency and survival in sharks and rays. [PDF]

J Fish Biol
Abstract Traditionally, lethal stomach dissection has been used to study the diets of sharks and rays, but conservation and animal welfare concerns necessitate non‐lethal alternatives, such as gastric lavage (stomach or gut flushing). In this study, we summarised gastric lavage studies on elasmobranchs to identify which species/groups it has been ...
Myers J, Sheaves M, Barnett A.
europepmc   +2 more sources

An Assessment of Mobile Predator Populations along Shallow and Mesophotic Depth Gradients in the Hawaiian Archipelago. [PDF]

Sci Rep, 2017
Large-bodied coral reef roving predators (sharks, jacks, snappers) are largely considered to be depleted around human population centers. In the Hawaiian Archipelago, supporting evidence is primarily derived from underwater visual censuses in shallow ...
Asher J, Williams ID, Harvey ES.
europepmc   +3 more sources

Use of Synthetic Salmon GnRH and Domperidone (Ovaprim®) in Sharks: Preparation for ex situ Conservation

Frontiers in Marine Science, 2020
Shark populations are constantly decreasing owing to environmental destruction and overfishing; thus, sharks are now at a risk of extinction, with 27.9% of shark species classified as endangered on the International Union for Conservation of Nature’s Red
Sang Wha Kim, Won Hee Hong, Won Hee Hong, Se Jin Han, Jun Kwon, Heejun Ko, Sung Bin Lee, Sib Sankar Giri, Sang Guen Kim, Byung Yeop Kim, Goo Jang, Byeong Chun Lee, Dong Wan Kim, Se Chang Park   +13 more
doaj   +1 more source

Molecular identification of sharks and rays species from Aceh waters, Indonesia

Depik Jurnal, 2023
Shark is a cartilaginous fish that is widely hunted because it has high economic value. The waters of Aceh are directly adjacent to the Indian Ocean and the Malacca Strait making it a preferred habitat for pelagic fish, especially sharks.
Mutia Ramadhaniaty, Maria Ulfah, Indra Indra, Nur Fadli, Nanda Muhammad Razi   +4 more
doaj   +1 more source

Vulnerability of tropical fish communities across depth in the central Indian Ocean. [PDF]

Conserv Biol
Abstract Coral reefs and their fish communities below scuba diving depth (>30 m), in mesophotic coral ecosystems (MCEs) (∼30–150 m), in rariphotic (150–300 m), and in upper bathyal waters (300–500 m) are often underexplored, especially in the Indian Ocean.
Stefanoudis PV, de Villiers NM, Afzal MS, Amir H, Amjad F, Hashim AS, Jauharee AR, Palmer R, Rogers AD, Shimal M, Naeem S, Ahusan M, Woodall LC.   +12 more
europepmc   +2 more sources

Identifikasi Sirip Ikan Hiu Yang Didapat Dari Pengumpul Di Minahasa Tenggara Menggunakan DNA Barcode [PDF]

, 2017
Populasi ikan hiu global menunjukkan penurunan yang signifikan karena; penangkapan yang masif dan tak terkontrol, karakter biologi reproduksi yang lambat serta fekunditas yang rendah.
Ginting, E. (Elvy), Wehantouw, A. (Andre), Wullur, S. (Stenly)   +2 more
core   +2 more sources

Clasper Flaring: Maintenance Behavior, or a Normally Hidden Feature of Male Whitetip Reef Sharks, Triaenodon Obesus? [PDF]

The Open Fish Science Journal, 2013
Male whitetip reef sharks, Triaenodon obsesus, are able to pivot their claspers beyond regular flexing, including spreading their distal tips in a funnel like fashion. The feature of this extended clasper flexing, labelled clasper flaring, is described here. It is speculated to possibly reflect a pre- or post-copulation-related behavior.
EK Ritter, LVJ Compagno
openaire   +1 more source

Sexual dimorphisms in the dermal denticles of thelesser-spotted catshark, Scyliorhinus canicula (Linnaeus, 1758) [PDF]

, 2013
The dermal layers of several elasmobranch species have been shown to be sexually dimorphic. Generally, when this occurs the females have thicker dermal layers compared to those of males. This sexual dimorphism has been suggested to occur as a response to
Adrian C Love, Colin P Waring, Lucy Babey, Neil Crooks, William J Haddon   +4 more
core   +5 more sources

Comparative Space Use of Sympatric Sharks at a Remote Island in the South Pacific Ocean. [PDF]

Ecol Evol
The space use of 34 dusky (Carcharhinus obscurus), 32 Galapagos (C. galapagensis), 47 tiger (Galeocerdo cuvier), and 20 sandbar (C. plumbeus) sharks was monitored with acoustic telemetry between 2021 and 2024 in coastal waters around Norfolk Island, Australia, a remote small island in the southwestern Pacific Ocean.
Matley JK, Roberts CN, Clarke TM, Meyer L, Doane MP, Dinsdale EA, Scott M, Barnett A, Huveneers C.   +8 more
europepmc   +2 more sources

Quantifying shark distribution patterns and species-habitat associations: implications of marine park zoning. [PDF]

PLoS ONE, 2014
Quantifying shark distribution patterns and species-specific habitat associations in response to geographic and environmental drivers is critical to assessing risk of exposure to fishing, habitat degradation, and the effects of climate change.
Mario Espinoza, Mike Cappo, Michelle R Heupel, Andrew J Tobin, Colin A Simpfendorfer   +4 more
doaj   +1 more source