Results 31 to 40 of about 890 (162)

Long-term changes in species composition and relative abundances of sharks at a provisioning site. [PDF]

open access: yesPLoS ONE, 2014
Diving with sharks, often in combination with food baiting/provisioning, has become an important product of today's recreational dive industry. Whereas the effects baiting/provisioning has on the behaviour and abundance of individual shark species are ...
Juerg M Brunnschweiler   +2 more
doaj   +1 more source

Low diversity and abundance of predatory fishes in a peripheral coral reef ecosystem. [PDF]

open access: yesEcol Evol
Our findings provide insights into the structuring of coral reef fish communities, demonstrating that distinct assemblages can occur within semi‐enclosed seas at smaller spatial scales than previously documented. We also report a low abundance of threatened fish species in an area of rapid, large‐scale coastal development, which identifies an urgent ...
Williams CT   +8 more
europepmc   +2 more sources

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

open access: yes, 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   +4 more
core   +2 more sources

Tubbataha Reefs Natural Park: the first comprehensive elasmobranch assessment reveals global hotspot for reef sharks

open access: yesJournal of Asia-Pacific Biodiversity, 2019
Elasmobranchs are experiencing population declines worldwide because of anthropogenic stressors. Marine protected areas (MPAs) have been shown to benefit mesopredatory species of shark.
Ryan Murray   +7 more
doaj   +1 more source

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

open access: yes, 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   +5 more
core   +1 more source

Contribution to the Biology of the Whitetip Reef Shark (Triaenodon obesus) [PDF]

open access: yes, 1977
The whitetip reef shark, Triaenodon obesus (Ruppell), is broadly distributed in t4e tropical and subtropical Indian and Pacific oceans from the Red Sea (type locality) and east coast of Africa to the eastern Pacific.
Randall, John E.
core  

The Overlooked Threat of Global Warming on Elasmobranch Fertility

open access: yesFish and Fisheries, Volume 27, Issue 1, Page 41-55, January 2026.
ABSTRACT Climate change is increasingly recognised as a critical threat to global biodiversity, yet its impacts on reproductive processes remain poorly understood in many marine taxa. Elasmobranchs (sharks, skates and rays) represent a particularly vulnerable group due to their peculiar life histories, low fecundity, and diverse reproductive modes.
Noémie Coulon   +3 more
wiley   +1 more source

Abundance patterns of reef sharks and predatory fishes on differently zoned reefs in the offshore Townsville region final report to the Great Barrier Reef Marine Park Authority [PDF]

open access: yes, 2008
Sharks were counted in six 500 x 20 m transects on the slope of each reef during late March 2008. Densities of whitetip reef sharks (Triaenodon obesus) were twice as high on green reefs as on blue reefs but were twice as high on pink reefs as on green ...
Ayling, A.M., Choat, J.H.
core  

Residencia del tiburón punta blanca de arrecife, Triaenodon obesus, (Carcharhiniformes: Carcharhinidae) en las bahías Chatham y Wafer del Parque Nacional Isla del Coco, Costa Rica

open access: yesRevista de Biología Tropical, 2020
Introducción: El tiburón punta blanca (Triaenodon obesus) es una especie de arrecife de aguas tropicales, no migratoria, que ha demostrado no tener una alta conectividad costera, como la observada para otras especies de tiburón, sin embargo posee la distribución más amplia de todas las demás especies de tiburón de arrecife del Indo-Pacífico. T. obesus,
López-Garro, Andrés   +3 more
openaire   +3 more sources

Identifikasi Keanekaragaman Jenis Hiu Dan Pari Hasil Tangkapan Nelayan Di Wpp 572, Pelabuhan Pendaratan Ikan Rigaih, Kabupaten Aceh Jaya [PDF]

open access: yes, 2023
Hiu merupakan top predator disuatu kawasan perairan, apabila hilangnya top  predator di perairan maka keseimbangan ekologi akan terancam. Hiu dan pari merupakan anggota kelompok ikan bertulang rawan yang termasuk dalam kelas Chondrichthyes.
Kamil, Fadillah   +2 more
core   +2 more sources

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