Results 11 to 20 of about 404 (134)

Environmental and Protection Effects of Shark-Companion Associations Across Three Ocean Basins. [PDF]

Ecol Evol
Companion species frequently associate with large marine hosts, yet the ecological drivers of these relationships remain poorly understood. Using a global dataset of midwater BRUVS deployments, we modelled the presence and abundance of shark‐companion associations across seven shark species and three ocean basins.
Walker JK, Meeuwig JJ, Thompson CDH.
europepmc   +2 more sources

Is Blood Thicker Than Water? The Influence of Kin Within a Bull Shark Social Network. [PDF]

Ecol Evol
This study investigates how kinship (“kinfluence”) shapes social structure in an aggregation of adult bull sharks in Fiji by integrating genomic relatedness, pedigree reconstruction, and detailed behavioral data. It reveals that while genetic relatedness has a small but significant influence on social behavior, especially among males, kin‐category ...
Marosi ND, Croft DP, Jacoby DMP, Ellis S, Griffiths AM.   +4 more
europepmc   +2 more sources

Defining ecological roles of sharks on coral reefs. [PDF]

Biol Rev Camb Philos Soc
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 ...
Klinard NV, Mull CG, Heithaus MR, MacNeil MA.   +3 more
europepmc   +2 more sources

A blacktip's black tip: The reliability of using dorsal-fin patterns for photo identification of blacktip reef sharks (Carcharhinus melanopterus). [PDF]

J Fish Biol
AbstractPhoto identification (photo ID) has increasingly become a valuable technique serving not only to identify individual animals but also to monitor populations, track migration patterns and assess wildlife health, among others uses. Various species of sharks are amenable to photo ID, among which the blacktip reef shark (Carcharhinus melanopterus ...
Lionnet LAMG, Debaere SF, Heuls H, Mourier J, Planes S, Rummer JL.   +5 more
europepmc   +6 more sources

Response of blacktip reef sharks Carcharhinus melanopterus to shark bite mitigation products [PDF]

Scientific Reports, 2020
AbstractGlobally, the frequency of shark bites is rising, resulting in an increasing demand for shark deterrents and measures to lessen the impact of shark bites on humans. Most existing shark protection measures are designed to reduce the probability of a bite, but fabrics that minimise injuries when a shark bite occurs can also be used as mitigation ...
Thiele, Madeline, Mourier, Johann, Papastamatiou, Yannis, Ballesta, Laurent, Chateauminois, Eric, Huveneers, Charlie   +5 more
openaire   +5 more sources

Trouble in the Tank: A Case Report of Fatal Scuticociliate Encephalitis in a Whitetip Reef Shark (Triaenodon obesus). [PDF]

J Fish Dis
Abstract This case report presents a recent case of scuticociliatosis in a whitetip reef shark (Triaenodon obesus), housed at a zoo (Haus des Meeres Aqua Terra Zoo, Vienna, Austria). Clinical signs such as uncoordinated swimming and body tilt were observed prior to death.
Schwegler H, Schreiner J, Prüllage M, Lipnik K, Holzer AS, Lewisch E.   +5 more
europepmc   +2 more sources

Insights into the structure of grey reef shark aggregation, Carcharhinus amblyrhynchos (Bleeker, 1856), in two distinct channels of the Maldivian archipelago, Indian Ocean. [PDF]

J Fish Biol
Abstract The grey reef shark Carcharhinus amblyrhynchos is one of the most frequently encountered reef‐associated shark species in the Maldives, yet very little is known about its local size structure or population dynamics. This study provides new insights into two aggregations of C.
Parmegiani A, Gobbato J, Yoosuf R, Seveso D, Galli P, Whitehead AD, Ismail Y, Montano S.   +7 more
europepmc   +2 more sources

Quantifying changes in umbilicus size to estimate the relative age of neonatal blacktip reef sharks (Carcharhinus melanopterus). [PDF]

Conserv Physiol, 2023
ABSTRACT Sharks can incur a range of external injuries throughout their lives that originate from various sources, but some of the most notable wounds in viviparous shark neonates are at the umbilicus. Umbilical wounds typically heal within 1 to 2 months post-parturition, depending on the species, and are therefore often used as an ...
Debaere SF, Weideli OC, Bouyoucos IA, Eustache KB, Trujillo JE, De Boeck G, Planes S, Rummer JL.   +7 more
europepmc   +5 more sources

Demographic inferences after a range expansion can be biased: the test case of the blacktip reef shark (Carcharhinus melanopterus). [PDF]

Heredity (Edinb), 2019
The evolutionary history of species is a dynamic process as they modify, expand, and contract their spatial distributions over time. Range expansions (REs) occur through a series of founder events that are followed by migration among neighboring demes.
Maisano Delser P, Corrigan S, Duckett D, Suwalski A, Veuille M, Planes S, Naylor GJP, Mona S.   +7 more
europepmc   +4 more sources

Location, Location, Location! Evaluating Space Use of Captive Aquatic Species—A Case Study with Elasmobranchs

Journal of Zoological and Botanical Gardens, 2022
The space use of captive animals has been reliably used as a tool to measure animal welfare in recent years. However, most analyses of space use focus primarily on terrestrial animals, with very little emphasis placed on the space use of aquatic animals.
Alexis M. Hart, Zac Reynolds, Sandra M. Troxell-Smith   +2 more
doaj   +1 more source