Results 41 to 50 of about 887 (171)

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.
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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

From Data Deficient to Big Data in Shark Conservation

open access: yesFish and Fisheries, Volume 26, Issue 6, Page 977-990, November 2025.
ABSTRACT Citizen science is increasingly harnessed worldwide to gather data otherwise requiring a prohibitive investment of funding and time. Meanwhile, the revolution in digital communication offers opportunities from crowdsourcing, big data approaches and social network mining to quickly and cost‐effectively fill major gaps in knowledge necessary to ...
F. Ferretti   +8 more
wiley   +1 more source

The shallow-water fish assemblage of Isla del Coco National Park, Costa Rica: structure and patterns in an isolated, predator-dominated ecosystem [PDF]

open access: yes, 2012
18 páginas, 7 figuras, 5 tablas[EN]Fishes at Isla del Coco National Park, Costa Rica, were surveyed as part of a larger scientific expedition to the area in September 2009.
Aburto-Oropeza, Octavio   +5 more
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Use of an acceleration data logger to measure diel activity patterns in captive whitetip reef sharks,Triaenodon obesus

open access: yesAquatic Living Resources, 2007
Traditional telemetry methods have been used to quantify the horizontal and vertical displacement of marine species, but are unable to identify specific physical activities such as swimming or gliding, resting, foraging, or spawning. We tested the utility of an acceleration data logger to quantify activity patterns of three captive whitetip reef sharks
Nicholas M. Whitney   +3 more
openaire   +1 more source

Effects of protection on large‐bodied reef fishes in the western Indian Ocean

open access: yesConservation Biology, Volume 39, Issue 4, August 2025.
Abstract Predatory and large‐bodied coral reef fishes have fundamental roles in the functioning and biodiversity of coral reef ecosystems, but their populations are declining, largely due to overexploitation in fisheries. These fishes include sharks, groupers, Humphead wrasse (Cheilinus undulatus), and Green Humphead parrotfish (Bolbometopon muricatum).
Melita Samoilys   +4 more
wiley   +1 more source

Role, importance and vulnerability of top predators on the Great Barrier Reef: a review [PDF]

open access: yes, 2010
The purpose of this review is to evaluate the ecological role of predators on the Great Barrier Reef (GBR), their vulnerability to human activities and their contribution to ecosystem and economic values.
Ayling, T., Ceccarelli, D.
core  

Taxonomic assessment of sharks occurring in Pakistan (northern Arabian Sea)

open access: yesThe European Zoological Journal
We described the Sharks of Pakistan on the basis of external morphology represented by 41 species belonging to 10 families. Family Pseudocarchariidae (Pseudocarcharias kamoharai), family Alopidae (Alopias pelgicus, A.
P. J. A. Siddiqui, A. Javed
doaj   +1 more source

DNA BARCODING IKAN HIU YANG TERTANGKAP DI PERAIRAN ACEH [PDF]

open access: yes, 2015
ABSTRAKTujuan dari penelitian ini adalah untuk menvalidasi status taksonomi hiu yangditangkap di Perairan Aceh. Pengambilan sampel dilakukan pada Maret-April 2014 di empat Tempat Pendaratan Ikan (TPI), yaitu TPI padang Seurahet ...
ICHSAN ANANDA PUTRA
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Great Barrier Reef Marine Park Authority Position Statement on the conservation and management of sharks and rays in the Queensland East Coast Inshore Finfish Fishery [PDF]

open access: yes, 2007
The purpose of this document is to state the Great Barrier Reef Marine Park Authority’s (GBRMPA) position on conservation of sharks and rays in relation to the Queensland East Coast Inshore Finfish Fishery (ECIFF).

core  

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