Results 11 to 20 of about 153,955 (353)

Depth and temperature profiles reflect individual differences in the daytime diving behaviours of pelagic thresher sharks

Frontiers in Marine Science, 2023
We used acoustic telemetry to investigate the roles of depth and temperature in the daytime foraging behaviours of 13 tagged pelagic thresher sharks by monitoring their fine scale vertical movements in the Philippines.
Simon P. Oliver, Simon P. Oliver, Thomas M. Grothues, Thomas M. Grothues, Zoe J. Mayo, Amie L. Williams, Medel Silvosa, Medel Silvosa, Gary Cases, Gary Cases   +9 more
doaj   +1 more source

Analysis of the temporal and spatial variability of whale shark (Rhincodon typus) aggregation in the South Ari Marine Protected Area, Maldives, Indian Ocean

The European Zoological Journal, 2021
Whale sharks are known to aggregate in coastal areas. In the South Ari Marine Protected Area (Maldives) a aggregation, mostly represented by young males with a high level of residency, has been described in the literature.
S. Valsecchi, C. Lanfredi, A. Azzellino, A. Savini, V. A. Bracchi, F. Marchese, J. Hancock, R. Rees, C. Cánovas Pérez   +8 more
doaj   +1 more source

Depredation influences anglers’ perceptions on coastal shark management and conservation in the United States Gulf of Mexico

Frontiers in Conservation Science, 2023
Overfishing, habitat degradation, and climate change have caused declines in shark populations throughout the world’s oceans. However, in the United States Gulf of Mexico (GoM), populations of several coastal shark species are starting to stabilize ...
Evan Gerald Prasky, J. Marcus Drymon, J. Marcus Drymon, Mandy Karnauskas, Alena Q. Anderson, Sarah L. Gibbs, Sarah L. Gibbs, Jonathan H. Grabowski, Amanda E. Jargowsky, Amanda E. Jargowsky, Danielle M. McAree, Ana R. Osowski, Ana R. Osowski, Savannah H. Swinea, Savannah H. Swinea, Savannah H. Swinea, Steven B. Scyphers, Steven B. Scyphers, Steven B. Scyphers   +18 more
doaj   +1 more source

The complete mitochondrial genome of a gray reef shark, Carcharhinus amblyrhynchos (Carcharhiniformes: Carcharhinidae), from the Western Indian Ocean

Mitochondrial DNA. Part B. Resources, 2020
We present the mitochondrial genome sequence of a gray reef shark, Carcharhinus amblyrhynchos (Bleeker 1856), a coral reef associated species. This is the first mitogenome for this species from the western Indian Ocean.
Ela Patel, Andrea M. Bernard, Marissa Mehlrose, Sydney Harned, Kimberly A. Finnegan, Cristín K. Fitzpatrick, James S. Lea, Mahmood S. Shivji   +7 more
doaj   +1 more source

Shark Attacks and Shark Diving [PDF]

Wilderness & Environmental Medicine, 2015
Ctr Ecol Evolut &Environm Changes, Azorean Biodivers Grp, Angra Do Heroismo, Azores ...
openaire   +2 more sources

Active acoustic telemetry tracking and tri-axial accelerometers reveal fine-scale movement strategies of a non-obligate ram ventilator

Movement Ecology, 2020
Background California horn sharks (Heterodontus francisci) are nocturnally active, non-obligate ram ventilating sharks in rocky reef habitats that play an important ecological role in regulating invertebrate communities.
Emily N. Meese, Christopher G. Lowe
doaj   +1 more source

A Time-Extended (24 h) Baited Remote Underwater Video (BRUV) for Monitoring Pelagic and Nocturnal Marine Species

Journal of Marine Science and Engineering, 2020
Baited remote underwater video systems (BRUVs) are efficient devices for remotely characterising the assemblage and relative density of fishes and other marine organisms.
Agusti Torres, Ana-Maria Abril, Eric E. G. Clua   +2 more
doaj   +1 more source

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

PLoS 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, Kátya G Abrantes, Adam Barnett   +2 more
doaj   +1 more source

Stock Status Estimating of 5 Shark Species in the Waters Around Taiwan Using a Length-Based Bayesian Biomass Estimation (LBB) Method

Frontiers in Marine Science, 2020
Five shark stocks in the waters around Taiwan were assessed using the LBB method, addressing the present gap. Among them, only one filter-feeding shark, megamouth shark Megachasma pelagios, qualified as having a healthy status.
Peilong Ju, Peilong Ju, Mingru Chen, Mingru Chen, Mingru Chen, Yongjun Tian, Yongjun Tian, Yongjun Tian, Yu Zhao, Shengyun Yang, Jiamei Xiao   +10 more
doaj   +1 more source

Diving behaviour of whale sharks in relation to a predictable food pulse [PDF]

, 2005
We present diving data for four whale sharks in relation to a predictable food pulse (reef fish spawn) and an analysis of the longest continuous fine-resolution diving record for a planktivorous shark.
Callum M Roberts, Finstad W.O, Gudger E.W, James C.R Smart, Rachel T Graham   +4 more
core   +2 more sources