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Tiger sharks support the characterization of the world’s largest seagrass ecosystem
Tiger sharks support the characterization of the world’s largest seagrass ecosystem Austin J. Gallagher, Jacob W. Brownscombe, Nourah A. Alsudairy, Andrew B. Casagrande, Chuancheng Fu, Lucy Harding, S. David Harris, Neil Hammerschlag, Wells Howe, Antonio Delgado Huertas, Sami Kattan, Andrew S. Kough, Andre Musgrove, Nicholas L. Payne, Adrian Phillips, Brendan D. Shea, Oliver N. Shipley,
First report of synophthalmia and leucism in a bull shark embryo
First report of synophthalmia and leucism in a bull shark (Carcharhinus leucas) embryo from the southeastern Gulf of Mexico Armando T. Wakida-Kusunoki, Vicente Anislado-Tolentino, Luis Fernando Del Moral-Flores ABSTRACT: An abnormal embryo (male of 465 mm total length) and 13 other embryos were removed from a pregnant female bull shark (Carcharhinus leucas) caught in coastal
Policy and transparency gaps for oceanic shark and rays in high seas tuna fisheries
Policy and transparency gaps for oceanic shark and rays in high seas tuna fisheries Melissa R. Cronin, Julia E. Amaral, Alexis M. Jackson, Jennifer Jacquet, Katherine L. Seto, Donald A. Croll ABSTRACT: The incidental capture by marine fisheries as bycatch poses a global threat to pelagic sharks and rays. In large, industrialized fisheries that often
Phylogeny explains capture mortality of sharks and rays in pelagic longline fisheries
Phylogeny explains capture mortality of sharks and rays in pelagic longline fisheries: a global meta-analytic synthesis Eric Gilman, Milani Chaloupka, Lee R. Benaka, Heather Bowlby, Mark Fitchett, Michel Kaiser, Michael Musyl ABSTRACT: Apex and mesopredators such as elasmobranchs are important for maintaining ocean health and are the focus of conservation efforts to mitigate exposure to
Trace elements in the silky shark in the Central Pacific Mexican Shelf
Trace elements in the silky shark Carcharhinus falciformis in the Central Pacific Mexican Shelf Christian Vega-Barba, Federico Páez-Osuna, Felipe Galván-Magaña, Isis Baró-Camarasa, Bernabé Aguilar-Palomino, Víctor Hugo Galván-Piña, Ana J. Marmolejo-Rodríguez ABSTRACT: Mercury (Hg), cadmium (Cd) and copper (Cu) concentrations were determined in muscle, liver and fin of the silky shark (Carcharhinus falciformis) caught in the
Challenges in avoiding deep-water shark bycatch in Azorean hook-and-line fisheries
Challenges in avoiding deep-water shark bycatch in Azorean hook-and-line fisheries Laurence Fauconnet, Diana Catarino, Diya Das, Eva Giacomello, José Manuel Gonzalez-Irusta, Pedro Afonso, Telmo Morato ABSTRACT: Deep-water sharks are highly diverse, vulnerable, and understudied as a group, despite the increasing pressures on their populations. Twenty-five species of deep-water sharks have been recorded in the Azores,
Parasites and prey of the nursehound shark Scyliorhinus stellaris
Parasites and prey of the nursehound shark Scyliorhinus stellaris (Linnaeus, 1758): Insights into hidden trophic web interactions in the Mediterranean Sea Mario Santoro, Bruno Bellisario, Fernando Ángel Fernández-Álvarez, Fabio Crocetta, Marialetizia Palomba ABSTRACT: The metazoan parasite community and the stomach contents of the nursehound shark Scyliorhinus stellaris from the Gulf of Naples (central Mediterranean Sea)
Development and validation of a drill attachment for faster and safer deployments of fin-mounted geolocators in large-bodied sharks
Development and validation of a drill attachment for faster and safer deployments of fin-mounted geolocators in large-bodied sharks C. Samantha Sherman, Eric D. Digel, Patrick Zubick, Jonathan Eged, Alifa B. Haque, Jay H. Matsushiba, Colin A. Simpfendorfer, Glenn Sant, Nicholas K. Dulvy ABSTRACT: Fin-mounted geolocators are widely used in marine studies to track animal movements
High overexploitation risk due to management shortfall in highly traded requiem sharks
High overexploitation risk due to management shortfall in highly traded requiem sharks C. Samantha Sherman, Eric D. Digel, Patrick Zubick, Jonathan Eged, Alifa B. Haque, Jay H. Matsushiba, Colin A. Simpfendorfer, Glenn Sant, Nicholas K. Dulvy ABSTRACT: Much of the international trade in fins (and likely meat too) is derived from requiem sharks (family Carcharhinidae),
Detection of numerous phycotoxins in young bull sharks
Detection of numerous phycotoxins in young bull sharks (Carcharhinus leucas) collected from an estuary of national significance Michelle L.Edwards, Adam M. Schaefer, Malcolm McFarland, Spencer Fire, Christopher R. Perkins, Matthew J. Ajemian ABSTRACT: Florida’s Indian River Lagoon (IRL) has experienced large-scale, frequent blooms of toxic harmful algae in recent decades. Sentinel, or indicator, species can
Influence of social media on fear of sharks, perceptions of intentionality associated with shark bites, and shark management preferences
Influence of social media on fear of sharks, perceptions of intentionality associated with shark bites, and shark management preferences William R. Casola, Justin M. Beall, M. Nils Peterson, Lincoln R. Larson, Carol S. Price ABSTRACT: Sharks, a critical component of marine ecosystems, represent one of the most threatened taxa globally. Shark conservation efforts are constrained
Sharks are the preferred scraping surface for large pelagic fishes
Sharks are the preferred scraping surface for large pelagic fishes: Possible implications for parasite removal and fitness in a changing ocean Christopher D. H. Thompson, Jessica J. Meeuwig ABSTRACT: Mutualistic and commensal interactions can have significant positive impacts on animal fitness and survival. However, behavioural interactions between pelagic animals living in offshore oceanic environments are
Long-term use of a shark breeding ground: Three decades of mating site fidelity in the nurse shark
Long-term use of a shark breeding ground: Three decades of mating site fidelity in the nurse shark, Ginglymostoma cirratum Harold L Pratt Jr, Theo C Pratt, Ryan J Knotek, Jeffrey C Carrier, Nicholas M Whitney ABSTRACT: Understanding shark mating dynamics and mating site use may be vital to species management. The Dry Tortugas courtship and mating ground (DTCMG) has
New Occurrences of the Tiger Shark off the Coast of Rio de Janeiro, Southeastern Brazil
New Occurrences of the Tiger Shark (Galeocerdo cuvier) (Carcharhinidae) off the Coast of Rio de Janeiro, Southeastern Brazil: Seasonality Indications Izar Aximoff, Rodrigo Cumplido, Marcelo Tardelli Rodrigues, Ubirajara Gonçalves de Melo, Eduardo Barros Fagundes Netto, Sérgio Ricardo Santos, Rachel Ann Hauser-Davis ABSTRACT: The tiger shark Galeocerdo cuvier (Péron & Lesueur, 1822) (Carcharhinidae) is classified as
Effects of Altered Stock Assessment Frequency on the Management of a Large Coastal Shark
Effects of Altered Stock Assessment Frequency on the Management of a Large Coastal Shark Cassidy D. Peterson, Michael J. Wilberg, Enric Cortés, Dean L. Courtney, Robert J. Latour ABSTRACT: Stock assessments are particularly resource-intensive processes. Demand for assessments typically exceeds capacity, stimulating interest in reducing stock assessment frequency for suitable species. Species with slow population