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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
Horizontal and vertical movements of immature dusky sharks
Horizontal and vertical movements of immature dusky sharks Carcharhinus obscurus in relation to commercial longline fisheries in the western North Atlantic Ocean Kroetz, A.M., Gulak, S.J.B. & Carlson, J.K. ABSTRACT: BackgroundMany species of sharks, including the dusky shark Carcharhinus obscurus, are often incidentally captured in commercial pelagic and bottom longline fisheries. Incidental capture can lead
Suspected predatory bites on a snorkeler by an oceanic whitetip shark off Moorea island
Suspected predatory bites on a snorkeler by an oceanic whitetip shark Carcharhinus longimanus off Moorea island (French Polynesia) Eric E. G. Clua DVM, PhD, Simon Demarchi MSc, Carl G. Meyer PhD ABSTRACT: Understanding why sharks bite humans is essential for developing strategies to prevent these incidents. Here, we use bite wound characteristics and eye witness
The whale shark genome reveals patterns of vertebrate gene family evolution
The whale shark genome reveals patterns of vertebrate gene family evolution Milton Tan, Anthony K Redmond, Helen Dooley, Ryo Nozu, Keiichi Sato, Shigehiro Kuraku, Sergey Koren, Adam M Phillippy, Alistair DM Dove, Timothy Read ABSTRACT: Chondrichthyes (cartilaginous fishes) are fundamental for understanding vertebrate evolution, yet their genomes are understudied. We report long-read sequencing of the
Complete mitochondrial genome of the Caribbean reef shark
Complete mitochondrial genome of the Caribbean reef shark, Carcharhinus perezi (Carcharhinformes: Carcharhinidae) Austin J. Gallagher, Oliver N. Shipley, Bo Reese & Vijender Singh ABSTRACT: The Caribbean reef shark (Carcharhinus perezi; Poey, 1876) is a medium to large-bodied coastal and reef-associated predator found throughout the subtropical and tropical waters of the Atlantic Ocean and Caribbean Sea,
Sharks, Lies, and Videotape: A content analysis of 32 years of Shark Week documentaries
Sharks, Lies, and Videotape: A content analysis of 32 years of Shark Week documentaries Lisa B. Whitenack, Brady L. Mickley, Julia Saltzman, Stephen M. Kajiura, Catherine C. Macdonald, David S. Shiffman ABSTRACT: Despite evidence of their importance to marine ecosystems, at least 25% of all chondrichthyan species are estimated or assessed as threatened with extinction.
The role and value of science in shark conservation advocacy
The role and value of science in shark conservation advocacy David S Shiffman, Catherine C Macdonald, S Scott Wallace, Nicholas K Dulvy ABSTRACT: Many species of sharks are threatened with extinction, and there has been a longstanding debate in scientific and environmental circles over the most effective and appropriate strategy to conserve and protect them.