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Preliminary investigation of reproductive hormone profiles in the blacktip shark
Preliminary investigation of reproductive hormone profiles in the blacktip shark (Carcharhinus limbatus), a placental viviparous species, in southern Florida Hannah J. Verkamp, Neil Hammerschlag, James Quinlan, Joseph A. Langan, James A. Sulikowski ABSTRACT: Accurate reproductive information is crucial for the effective management of sharks. Here, we used non-lethal methods to evaluate reproductive hormone profiles of
Varying reef shark abundance trends inside a marine reserve
Varying reef shark abundance trends inside a marine reserve: evidence of a Caribbean reef shark decline Kathryn I. Flowers, Elizabeth A. Babcock, Yannis P. Papastamatiou, Mark E. Bond, Norlan Lamb, Ashbert Miranda, Randolph Nuñez, Jasmine Valentin-Albanese, Gina M. Clementi, Megan C. Kelley, Demian D. Chapman ABSTRACT: Spatial comparisons of reef shark abundance inside and outside
A new record of the rare Bigeye Sand Tiger shark from the northwestern Pacific
A new record of the rare Bigeye Sand Tiger shark Odontaspis noronhai Maul, 1955 (Lamniformes: Odontaspididae) from the northwestern Pacific, with notes on dentition NG, S.-L. ., YU, C.-J. ., SU, S.-H. ., & JOUNG, S.-J. ABSTRACT: In the Pacific Ocean, the rare Bigeye Sand Tiger shark Odontaspis noronhai has only been recorded twice, once
Whale sharks feed on baitfish with other predators at Ningaloo Reef
Whale sharks (Rhincodon typus) feed on baitfish with other predators at Ningaloo Reef E. Lester, T. Cannon, S. Lawrence, J. Wilton, G. Araujo ABSTRACT: We provide rare in-water evidence of whale sharks feeding on baitballs in the presence of other predators. Our observations provide evidence of the complexity of whale shark feeding behaviour and provide
Unravelling the taxonomy of the gulper shark genus Centrophorus in the Mediterranean Sea
Call me by my name: unravelling the taxonomy of the gulper shark genus Centrophorus in the Mediterranean Sea through an integrated taxonomic approach Andrea Bellodi, Anna Benvenuto, Riccardo Melis, Antonello Mulas, Monica Barone, Claudio Barría, Alessia Cariani, Laura Carugati, Archontia Chatzispyrou, Monique Desrochers, Alice Ferrari, Javier Guallart, Farid Hemida, Cecilia Mancusi, Carlotta Mazzoldi, Sergio Ramírez-Amaro,
Behavioural plasticity and the realised thermal niche of basking sharks
Cool runnings: behavioural plasticity and the realised thermal niche of basking sharks E. M. Johnston, J. D. R. Houghton, P. A. Mayo, G. K. F. Hatten, A. P. Klimley & P. J. Mensink ABSTRACT: Long-distance migrations by marine vertebrates are often triggered by pronounced environmental cues. For the endangered basking shark (Cetorhinus maximus), seasonal changes
Extinction risk, reconstructed catches, and management of chondrichthyan fishes in the Western Central Atlantic Ocean
Extinction risk, reconstructed catches, and management of chondrichthyan fishes in the Western Central Atlantic Ocean Brendan S. Talwar, Brooke Anderson, Cristopher G. Avalos-Castillo, María del Pilar Blanco-Parra, Alejandra Briones, Diego Cardeñosa, John K. Carlson, Patricia Charvet, Charles F. Cotton, Zoe Crysler, Danielle H. Derrick, Michael R. Heithaus, Katelyn B. Herman, Olga Koubrak, David W. Kulka,
Population genetics at two whale shark aggregations in the western Indian Ocean
Pieces in a global puzzle: Population genetics at two whale shark aggregations in the western Indian Ocean Royale S. Hardenstine, Song He, Jesse E. M. Cochran, Camrin D. Braun, Edgar Fernando Cagua, Simon J. Pierce, Clare E. M. Prebble, Christoph A. Rohner, Pablo Saenz-Angudelo, Tane H. Sinclair-Taylor, Gregory B. Skomal, Simon R. Thorrold, Alexandra M.
Thermally insensitive physiological performance allows neonatal sharks to use coastal habitats as nursery areas
Thermally insensitive physiological performance allows neonatal sharks to use coastal habitats as nursery areas Ian A. Bouyoucos, Colin A. Simpfendorfer, Serge Planes, Gail D. Schwieterman, Ornella C. Weideli, Jodie L. Rummer ABSTRACT: Coastal sharks can use shallow, nearshore habitats as nursery areas, which is a behaviour that may increase fitness. The ecological benefits of shark
Dermal denticle shedding rates vary between two captive shark species
Dermal denticle shedding rates vary between two captive shark species Erin M. Dillon, Anshika Bagla, Kiera D. Plioplys, Douglas J. McCauley, Kevin D. Lafferty, Aaron O’Dea ABSTRACT: Shark dermal scale (denticle) accumulation in the fossil record can provide information about the abundance and composition of past shark communities. Denticles are shed continuously, such that a
Scyliorhinus hachijoensis, a new species of catshark from the Izu Islands
Scyliorhinus hachijoensis, a new species of catshark from the Izu Islands, Japan (Carcharhiniformes: Scyliorhinidae) ITO, N. ., FUJII, M. ., NOHARA, K. ., & TANAKA, S. ABSTRACT: A new species of catshark genus Scyliorhinus, S. hachijoensis sp. nov., is described for the islands of Mikurajima, Hachijojima, and Torishima in southeastern Japan. Scyliorhinus hachijoensis has clasper
Longfin Mako Shark in the Eastern Tropical Pacific
Longfin Mako Shark, Isurus paucus, in the Eastern Tropical Pacific: First Evidence of Trophic Ontogeny Based on the Isotopic Analysis of Long-term Tissues Estupiñán-Montaño, C., Delgado-Huertas, A. ABSTRACT: The ontogeny of pelagic species is difficult to study due to their migratory patterns and the inaccessibility of their habitats, leaving a large part of their life
Drivers of variation in occurrence, abundance, and behaviour of sharks on coral reefs
Drivers of variation in occurrence, abundance, and behaviour of sharks on coral reefs E. Lester, T. Langlois, I. Lindgren, M. Birt, T. Bond, D. McLean, B. Vaughan, T. H. Holmes, M. Meekan ABSTRACT: Quantifying the drivers of population size in reef sharks is critical for the development of appropriate conservation strategies. In north-west Australia, shark
Ocean warming alters the distributional range, migratory timing, and spatial protections of the tiger shark
Ocean warming alters the distributional range, migratory timing, and spatial protections of an apex predator, the tiger shark (Galeocerdo cuvier) Neil Hammerschlag, Laura H. McDonnell, Mitchell J. Rider, Garrett M. Street, Elliott L. Hazen, Lisa J. Natanson, Camilla T. McCandless, Melanie R. Boudreau, Austin J. Gallagher, Malin L. Pinsky, Ben Kirtman ABSTRACT: Given climate change
Shark teeth can resist ocean acidification
Shark teeth can resist ocean acidification Jonathan Y. S. Leung, Ivan Nagelkerken, Jennifer C. A. Pistevos, Zonghan Xie, Sam Zhang, Sean D. Connell ABSTRACT: Ocean acidification can cause dissolution of calcium carbonate minerals in biological structures of many marine organisms, which can be exacerbated by warming. However, it is still unclear whether this also affects