Results 21 to 30 of about 391 (136)

Inferring leader-follower dynamics in three shark species using acoustic telemetry data [PDF]

open access: yesMovement Ecology
Background Understanding collective behaviours and interactions in sharks is still in its infancy. Although recent studies have revealed some social structures in several shark species, little is known about complex interactions and social processes such
Nils Kreuter   +3 more
doaj   +2 more sources

Defining ecological roles of sharks on coral reefs [PDF]

open access: yesBiological Reviews, Volume 100, Issue 6, Page 2707-2725, December 2025.
ABSTRACT Sharks have often been perceived to play a critical role in the dynamics of coral reef ecosystems globally. Yet, there is relatively little evidence to support this idea across all but a limited set of species and contexts. Research on the roles and importance of reef sharks has been complicated by logistical challenges in collecting data on ...
Natalie V. Klinard   +3 more
wiley   +2 more sources

The Phenomenon of Piebaldism in Sharks: A Review of Global Sightings and Patterns [PDF]

open access: yesEcology and Evolution, Volume 15, Issue 7, July 2025.
Chromatic disorders like piebaldism—a rare form of leucism causing partial pigment loss—have been documented in 25 wild shark cases across 17 species and 11 families, with varying anatomical distribution. This study compiles published and unpublished records to better understand the taxonomic and geographical spread of piebaldism and its potential ...
Darren A. Whitehead   +9 more
wiley   +2 more sources

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

open access: yesJournal of Fish Biology, Volume 107, Issue 1, Page 130-142, July 2025.
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 ...
Jaelen Myers   +2 more
wiley   +2 more sources

Catch Data Can Unravel Elasmobranch Aggregation Dynamics and Group Behaviours [PDF]

open access: yesEcology and Evolution
Elasmobranchs (i.e., sharks, skates, rays), known for their cognitive abilities and complex behaviours, often form aggregations that are thought to be crucial for their survival and evolutionary success.
A. G. McInturf   +11 more
doaj   +2 more sources

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

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   +2 more sources

Predatory Responses and Feeding Behaviour of Three Elasmobranch Species in an Aquarium Setting

open access: yesJournal of Zoological and Botanical Gardens, 2023
Many progressive aquariums worldwide house various elasmobranch species as part of their commitment to conservation awareness and the long-term well-being of these creatures.
Sandra Costa   +3 more
doaj   +1 more source

Parasitic copepods (Crustacea, Hexanauplia) on fishes from the lagoon flats of Palmyra Atoll, Central Pacific [PDF]

open access: yesZooKeys, 2019
We surveyed copepods parasitic on the fishes at Palmyra, a remote atoll in the Central Indo-Pacific faunal region. In total, we collected 849 individual fish, representing 44 species, from the intertidal lagoon flats at Palmyra and recovered 17 parasitic
Lilia C. Soler-Jiménez   +10 more
doaj   +3 more sources

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

The shark assemblage at French Frigate Shoals atoll, Hawai'i: species composition, abundance and habitat use. [PDF]

open access: yesPLoS ONE, 2011
Empirical data on the abundance and habitat preferences of coral reef top predators are needed to evaluate their ecological impacts and guide management decisions.
Jonathan J Dale   +3 more
doaj   +1 more source

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