Results 61 to 70 of about 1,562 (195)

Shark–Cetacean trophic interaction, Duinefontein, Koeberg, (5 Ma), South Africa

South African Journal of Science, 2015
This study forms part of a larger project to reconstruct the Mio-Pliocene marine palaeoenvironment along South Africa’s west coast. It documents the shark–cetacean trophic interaction during the Zanclean (5 Ma) at Duinefontein (Koeberg).
Romala Govender
doaj   +1 more source

The Unseen Crisis of Sharks and Rays in Senegal

Ecology and Evolution, Volume 16, Issue 4, April 2026.
This study presents a conservative quantitative assessment of shark and ray landings and trade in Senegal, revealing extensive exploitation of threatened species. Surveys at two major artisanal processing sites in the Casamance region recorded over 170,000 individuals, mostly rays, with nearly all biomass comprising species at risk of extinction, and ...
Rima W. Jabado, Luc Badji, Ryan Charles, Christoph A. Rohner   +3 more
wiley   +1 more source

Effects of provisioning ecotourism activity on the behaviour of white sharks Carcharodon carcharias [PDF]

Marine Ecology Progress Series, 2007
Ecotourism operations which provide food to large predators have the potential to neg- atively affect their target species, by conditioning them to associate humans with food, or by gener- ally altering their behavioural patterns. This latter effect could have potentially detrimental conse- quences for the ecosystem inhabited by the predator, because ...
RK Laroche, AA Kock, LM Dill, WH Oosthuizen   +3 more
openaire   +1 more source

A “Wicked Problem” Reconciling Human-Shark Conflict, Shark Bite Mitigation, and Threatened Species

Frontiers in Conservation Science, 2021
Conservation measures often result in a “wicked problem,” i.e., a complex problem with conflicting aims and no clear or straightforward resolution without severe adverse effects on one or more parties.
Yuri Niella, Victor M. Peddemors, Marcel Green, Amy F. Smoothey, Robert Harcourt   +4 more
doaj   +1 more source

The Dynamic Nature of Nearshore Shark Nurseries in the Northern Gulf of Mexico

Journal of Biogeography, Volume 53, Issue 4, April 2026.
ABSTRACT Aim Some habitats serve particularly important functions for wildlife. Identifying and appropriately managing these ‘essential habitats’ is critical, especially for wildlife that have faced severe population declines like sharks. Nursery habitats aid in the survival and development of juvenile sharks, which until recently were not formally ...
Philip Matich, Lindsay L. Mullins, Jeffrey D. Plumlee, Mark R. Fisher, John Mareska, J. Marcus Drymon   +5 more
wiley   +1 more source

Records of white shark, Carcharodon carcharias, in the Gulf of California, Mexico

Marine Biodiversity Records, 2010
The white shark is known to inhabit the Gulf of California, but few published records exist for the most frequent localities of captures or sightings of this protected and relatively uncommon shark in Gulf waters. We have compiled and here report 38 records of white shark captures and reliable sightings for the Gulf.
Felipe Galván-Magaña, Edgar Mauricio Hoyos-Padilla, Carlos J. Navarro-Serment, Fernando Márquez-Farías   +3 more
openaire   +1 more source

Genome‐Wide DNA Methylation Patterns Predict Age in the Zebra Shark (Stegostoma tigrinum) and Provide Insight Into the Evolution of Vertebrate Aging

Molecular Ecology, Volume 35, Issue 7, April 2026.
ABSTRACT Epigenomic changes are a hallmark of aging, and DNA methylation (DNAm) has emerged as the most reliable molecular marker of an individual's age. Genome‐wide patterns of age‐associated hypo‐ and hypermethylation have been applied to generate predictive models (i.e., “epigenetic clocks”) capable of estimating chronological age in an increasingly
Samantha L. Bock, Kady Lyons, Lei Yang, Jennifer Wyffels, Lance Adams, Nienke Klerks, Aaron Jeskie, Ellen Leever, Taylor Hartl, Javier Almunia, Dan Peterson, Ana Ferreira, Joe Okamoto, Kate Archibald, Chris Spaulding, Kayla Leyden, Gisele A. Montano, Savannah Vasey, Adrienne Rowland, Lise Watson, Alfonso Lopez, Jay Hemdal, Mike Stafford, Anne Bronikowski, Gavin J. P. Naylor, Benjamin B. Parrott   +25 more
wiley   +1 more source

Vertebral bomb radiocarbon suggests extreme longevity in white sharks. [PDF]

PLoS ONE, 2014
Conservation and management efforts for white sharks (Carcharodon carcharias) remain hampered by a lack of basic demographic information including age and growth rates.
Li Ling Hamady, Lisa J Natanson, Gregory B Skomal, Simon R Thorrold   +3 more
doaj   +1 more source

Integrating Local Ecological Knowledge and Fishing Effort Data to Inform Bycatch Management of Threatened Marine Fauna in Small‐Scale Fisheries

Diversity and Distributions, Volume 32, Issue 3, March 2026.
ABSTRACT Aim To examine the utility of local ecological knowledge (LEK) and fishing effort data in revealing bycatch patterns of marine threatened species in small‐scale fisheries to inform their conservation and management. Location Northern Haizhou Bay, China (35° to 37° N, 119° to 122° E).
Wenyi Li, Yining Chen, Xiong Zhang
wiley   +1 more source

Contemporary Methods for Capturing Juvenile Salmonids in the Marine Environment

Fish and Fisheries, Volume 27, Issue 2, Page 160-178, March 2026.
ABSTRACT Anadromous salmonids play vital roles in marine and freshwater ecosystems. The most abundant of these fishes—Pacific salmon (Oncorhynchus spp.)—are integral to coastal ecosystems and communities across the North Pacific Rim, but numerous populations are experiencing dramatic declines, particularly towards the south of their range.
Sean C. Godwin, Emma M. Atkinson, Jamieson B. Atkinson, Mackenzie C. Bartlett, William D. P. Duguid, Marc Trudel, Andrew W. Bateman   +6 more
wiley   +1 more source