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Scarring patterns of whale sharks at a provisioning site in the Philippines
Scarring patterns of whale sharks, Rhincodon typus, at a provisioning site in the Philippines Luke Penketh, Anna Schleimer, Jessica Labaja, Sally Snow, Alessandro Ponzo, Gonzalo Araujo ABSTRACT: 1. Shark‐based tourism continues to be a rapidly growing industry, and thus understanding the impacts of such activities is essential to mitigate the potential negative effects on the
Genetic connectivity of the scalloped hammerhead shark across Indonesia and the Western Indian Ocean
Genetic connectivity of the scalloped hammerhead shark Sphyrna lewini across Indonesia and the Western Indian Ocean Sutanto Hadi, Noviar Andayani, Efin Muttaqin, Benaya M. Simeon, Muhammad Ichsan, Beginer Subhan, Hawis Madduppa ABSTRACT: Scalloped Hammerhead shark (Sphyrna lewini) is an endangered species which its populations have been declining globally including in Indonesia, the world’s top shark
Growth pattern, condition factor and sex ratio of Grey Reef Shark in Makassar Strait
Growth pattern, condition factor and sex ratio of Grey Reef Shark Carcharhinus amblyrhynchos (Bleeker,1856) in Makassar Strait N L Rapi, A Mallawa, J Tresnati, F Amir ABSTRACT: Shark has been a sought-after species by fishermen due to its high economic value in the International market. It has increased shark’s fishing pressure on its wild population.
A real‐time PCR assay to detect predation by spiny dogfish on Atlantic cod in the western North Atlantic Ocean
A real‐time PCR assay to detect predation by spiny dogfish on Atlantic cod in the western North Atlantic Ocean Steven C. Pitchford, Brian E. Smith, Richard S. McBride ABSTRACT: Conventional observations show spiny dogfish (Squalus acanthius Linnaeus) rarely eat Atlantic cod (Gadus morhua Linnaeus; 0.02% of stomachs) in the northwestern Atlantic Ocean. Critics express concern
A Blacktip Reef Shark Bite to the Hand in the Remote Solomon Islands
A Blacktip Reef Shark Bite to the Hand in the Remote Solomon Islands Daniel Popa, MD, PhD; Nancy Beach, PA-C; Charlotte Sadler, MD ABSTRACT: Background Solomon Islands is a country in the South Pacific Ocean with excellent scuba diving, particularly among its remote islands that can be accessed by liveaboard dive boats. Blacktip reef sharks
The Use of Drones in Marine Animal Research
Operational Protocols for the Use of Drones in Marine Animal Research Vincent Raoult, Andrew P Colefax, Blake M. Allan, Daniele Cagnazzi, Nataly Castelblanco-Martínez, Daniel Ierodiaconou, David W. Johnston, Sarah Landeo-Yauri, Mitchell Lyons, Vanessa Pirotta, Gail Schofield, Paul A Butcher ABSTRACT: The use of drones to study marine animals shows promise for the examination of numerous
Relative contribution to the shark fin trade of Indo‐Pacific and Eastern Pacific pelagic thresher sharks
Relative contribution to the shark fin trade of Indo‐Pacific and Eastern Pacific pelagic thresher sharks D. Cardeñosa, A. T. Fields, S. K. H. Shea, K. A. Feldheim, D. D. Chapman ABSTRACT: Fins from highly mobile shark species entering large shark fin trade hubs can originate from various geographical locations and stocks. Tracing fins from internationally
Forensic species identification of elasmobranchs landed in Costa Rican artisanal fisheries
Forensic species identification of elasmobranchs landed in Costa Rican artisanal fisheries Jason R.O’Bryhim, E.C.M. Parsons, Stacey L. Lance ABSTRACT: Elasmobranchs represent one of the most imperiled taxa, yet few nations have developed catch limits and no international or bilateral catch limits exist. One barrier to establishing catch limits is a lack of accurate species-specific extraction
Standardized data to support conservation prioritization for sharks and batoids
Standardized data to support conservation prioritization for sharks and batoids (Elasmobranchii) Rikke Oegelund Nielsen, Rita da Silva, Jacqueline Juergens, Johanna Staerk, Line Lindholm Sørensen, John Jackson, Simeon Quirinus Smeele, Dalia A. Conde ABSTRACT: We collated and synthesized information on 1,226 Elasmobranch species (i.e., sharks, rays, and skates) globally from a wide range of sources. We
Comparative morphology of shark pectoral fins
Comparative morphology of shark pectoral fins Sarah L. Hoffmann, Thaddaeus J. Buser, Marianne E. Porter ABSTRACT: Sharks vary greatly in morphology, physiology, and ecology. Differences in whole body shape, swimming style, and physiological parameters have previously been linked to varied habitat uses. Pectoral fin morphology has been used to taxonomically classify species and hypotheses on
The immunoglobulins of cartilaginous fishes
The immunoglobulins of cartilaginous fishes Hanover Matz, Danish Munir, James Logue, Helen Dooley ABSTRACT: Cartilaginous fishes, comprising the chimeras, sharks, skates, and rays, split from the common ancestor with other jawed vertebrates approx. 450 million years ago. Being the oldest extant taxonomic group to possess an immunoglobulin (Ig)-based adaptive immune system, examination of this group
Over 90 endangered fish and invertebrates are caught in industrial fisheries
Over 90 endangered fish and invertebrates are caught in industrial fisheries Roberson, L.A., Watson, R.A. & Klein, C.J. ABSTRACT: Industrial-scale harvest of species at risk of extinction is controversial and usually highly regulated on land and for charismatic marine animals (e.g. whales). In contrast, threatened marine fish species can be legally caught in industrial fisheries.
Uncovering the ecological roles and importance of rays
Buried in the sand: Uncovering the ecological roles and importance of rays Kathryn I. Flowers, Michael R. Heithaus, Yannis P. Papastamatiou ABSTRACT: Rays (superorder Batoidea) are the most diverse group of elasmobranchs, and many are threatened with extinction. However, there remain areas where research on the ecology of this group is lacking, from trophic interactions
When large marine predators feed on fisheries catches
When large marine predators feed on fisheries catches: Global patterns of the depredation conflict and directions for coexistence Paul Tixier, Mary‐Anne Lea, Mark A. Hindell, Dirk Welsford, Camille Mazé, Sophie Gourguet, John P. Y. Arnould ABSTRACT: The sustainable mitigation of human–wildlife conflicts has become a major societal and environmental challenge globally. Among these conflicts, large
Sex differentiation in seasonal distribution of the starry smooth‐hound
Sex differentiation in seasonal distribution of the starry smooth‐hound Mustelus asterias Niels W. P. Brevé, Hendrik V. Winter, Paul A. D. M. Wijmans, Eleanor S. I. Greenway, Leopold A. J. Nagelkerke ABSTRACT: This mark‐recapture study of starry smooth‐hound Mustelus asterias tagged during the summer months near the Dutch coast demonstrates a large‐scale spatial sex differentiation