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Overfishing drives over one-third of all sharks and rays toward a global extinction crisis
Overfishing drives over one-third of all sharks and rays toward a global extinction crisis Nicholas K. Dulvy, Nathan Pacoureau, Cassandra L. Rigby, Riley A. Pollom, Rima W. Jabado, David A. Ebert, Brittany Finucci, Caroline M. Pollock, Jessica Cheok, Danielle H. Derrick, Katelyn B. Herman, C. Samantha Sherman, Wade J. Van der Wright, Julia M. Lawson,
Environmental DNA reduces the phantom diversity of sharks and rays in turbid marine habitats
Seeing through sedimented waters: environmental DNA reduces the phantom diversity of sharks and rays in turbid marine habitats Yin Cheong Aden Ip, Jia Jin Marc Chang, Kelvin K P Lim, Zeehan Jaafar, Benjamin J Wainwright, Danwei Huang ABSTRACT: Background: Sharks and rays are some of the most threatened marine taxa due to the high levels
The Subtle Impacts of Tourist Provisioning on the Social Behavior of Tiger Sharks
Social Network Analysis Reveals the Subtle Impacts of Tourist Provisioning on the Social Behavior of a Generalist Marine Apex Predator Jacoby David M. P., Fairbairn Bethany S., Frazier Bryan S., Gallagher Austin J., Heithaus Michael R., Cooke Steven J., Hammerschlag Neil ABSTRACT: Shark dive ecotourism is a lucrative industry in many regions around the globe.
Differential horizontal migration patterns of two male salmon sharks tagged in the Bering Sea
Differential horizontal migration patterns of two male salmon sharks (Lamna ditropis) tagged in the Bering Sea Sabrina Garcia, Cindy A. Tribuzio, Andrew C. Seitz, Michael B. Courtney, Julie K. Nielsen, Jim M. Murphy, Dion S. Oxman ABSTRACT: Background The salmon shark (Lamna ditropis) is a widely distributed apex predator in the North Pacific Ocean. Many
Passive Prey Discrimination in Surface Predatory Behaviour of Bait-Attracted White Sharks from Gansbaai
Passive Prey Discrimination in Surface Predatory Behaviour of Bait-Attracted White Sharks from Gansbaai, South Africa Primo Micarelli, Federico Chieppa, Antonio Pacifico, Enrico Rabboni, Francesca Romana Reinero ABSTRACT: Between the years 2008 and 2013, six annual research expeditions were carried out at Dyer Island (Gansbaai, South Africa) to study the surface behaviour of white sharks in
Phylogeography and population genetics of the cryptic bonnethead shark Sphyrna aff. tiburo
Phylogeography and population genetics of the cryptic bonnethead shark Sphyrna aff. tiburo in Brazil and the Caribbean inferred from mitochondrial DNA markers Cindy Gonzalez, Bautisse Postaire, Rodrigo R Domingues, Kevin A Feldheim, Susana Caballero, Demian Chapman ABSTRACT: Resolving the identity, phylogeny, and distribution of cryptic species within species complexes is an essential precursor to management.
First record of the mating system in the grey smoothhound shark
First record of the mating system in the grey smoothhound shark (Mustelus californicus) Alexis O. Tárula-Marín & Nancy C. Saavedra-Sotelo ABSTRACT: Mating systems constitute an important biological characteristic that must be evaluated in commercially important species due to the effects of these systems on population growth rates and genetic diversity levels, which in turn determine
Functionality and Effectiveness of Marine Protected Areas in Southeastern Brazilian Waters for Demersal Elasmobranchs
Functionality and Effectiveness of Marine Protected Areas in Southeastern Brazilian Waters for Demersal Elasmobranchs Thamíris C. Karlovic, Renata R. Gomes, Paulo C. Paiva, Elizabeth A. Babcock, June F. Dias ABSTRACT: Ensuring the efficacy of Marine Protected Areas (MPAs) requires that adequate management strategies be implemented according to the MPA’s objectives. Within the scope of species
DNA barcoding ray wings in Greece detects protected species
Flying under the radar: DNA barcoding ray wings in Greece detects protected species and umbrella labelling terms Zoe Giagkazoglou, Andrew M. Griffiths, Anastasia Imsiridou, Archontia Chatzispyrou, Konstantinos Touloumis, Jake L. Hebb, Dimitra Mylona, Anna K. Malamidou, Evangelia D. Apostolidi, Ioannis Ε. Batjakas, Chrysoula Gubili ABSTRACT: Mislabeling of seafood products and marketing of protected species remains
Bio-Ecological Features Update on Eleven Rare Cartilaginous Fish in the Central-Western Mediterranean Sea
Bio-Ecological Features Update on Eleven Rare Cartilaginous Fish in the Central-Western Mediterranean Sea as a Contribution for Their Conservation Mulas A, Bellodi A, Carbonara P, Cau A, Marongiu MF, Pesci P, Porcu C, Follesa MC. ABSTRACT: Cartilaginous fish are commonly recognized as key species in marine ecosystems for their fundamental ecological role as top predators.
Nation-wide assessment of the distribution and population size of the data-deficient nurse shark
Nation-wide assessment of the distribution and population size of the data-deficient nurse shark (Ginglymostoma cirratum) Garzon F, Graham RT, Baremore I, Castellanos D, Salazar H, Xiu C, et al. ABSTRACT: The study presents the first national assessment of a nurse shark (Ginglymostoma cirratum) population, conducted using a combination of transect surveys and baited remote underwater
Reef manta rays forage on tidally driven, high density zooplankton patches in Hanifaru Bay, Maldives
Reef manta rays forage on tidally driven, high density zooplankton patches in Hanifaru Bay, Maldives Armstrong AO, Stevens GMW, Townsend KA, Murray A, Bennett MB, Armstrong AJ, Uribe-Palomino J, Hosegood P, Dudgeon CL, Richardson AJ. ABSTRACT: Manta rays forage for zooplankton in tropical and subtropical marine environments, which are generally nutrient-poor. Feeding often occurs at
Successful parks for sharks
Successful parks for sharks: No-take marine reserve provides conservation benefits to endemic and threatened sharks off South Africa Patricia S. Albano, Chris Fallows, Monique Fallows, Olivia Schuitema, Anthony T.F. Bernard, Oliver Sedgwick, Neil Hammerschlag ABSTRACT: Sharks are among the most threatened vertebrates on the planet. Marine protected areas (MPAs) have been widely established and promoted
Size structure of broadnose sevengill sharks in Sawdust Bay, Rakiura/Stewart Island
Size structure of broadnose sevengill sharks (Notorynchus cepedianus) in Sawdust Bay, Rakiura/Stewart Island, estimated using underwater stereo-photogrammetry Robert Lewis, Steve Dawson, Will Rayment ABSTRACT: The broadnose sevengill shark (Notorynchus cepedianus) is a large marine predator found in temperate coastal marine habitats. Despite being commonly encountered, details of its ecology are limited. To partially address this,
New Records of the Great White Shark off the Lybian coast
Using citizen science to detect rare and endangered species: New records of the great white shark Carcharodon carcharias off the Libyan coast Patrick L. JAMBURA & Julia TÜRTSCHER, Alessandro DE MADDALENA, Ioannis GIOVOS, Jürgen KRIWET, Jamila RIZGALLA, Sara A. A. AL MABRUK ABSTRACT: The presence of the great white shark (Carcharodon carcharias) in the Mediterranean