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Life-history traits inform population trends when assessing the conservation status of a declining tiger shark population
Life-history traits inform population trends when assessing the conservation status of a declining tiger shark population Christopher Brown, George Roff ABSTRACT: The assessment of the conservation status of wide ranging species depends on estimates of the magnitude of their population trends. The accuracy of trend estimates will depend on where and how many locations within
Shark-based tourism presents opportunities for facultative dietary shift in coral reef fish
Shark-based tourism presents opportunities for facultative dietary shift in coral reef fish Joshua A. Drew, Mallory McKeon ABSTRACT: Tourism represents an important opportunity to provide sustainable funding for many ecosystems, including marine systems. Tourism that is reliant on aggregating predator species in a specific area using food provisioning raises questions about the long-term ecological impacts
Deep learning accurately predicts white shark locomotor activity from depth data
Deep learning accurately predicts white shark locomotor activity from depth data Zac Yung-Chun Liu, Jerry H. Moxley, Paul KaniveAdrian C. Gleiss, Thom Maughan, Larry Bird, Oliver J. D. Jewell, Taylor K. Chapple, Tyler Gagne, Connor F. White, Salvador J. Jorgensen ABSTRACT: Background The study of bioenergetics, kinematics, and behavior in free-ranging animals has been transformed
Social preferences and network structure in a population of reef manta rays
Social preferences and network structure in a population of reef manta rays Robert J. Y. Perryman, Stephanie K. Venables, Ricardo F. Tapilatu, Andrea D. Marshall, Culum Brown, Daniel W. Franks ABSTRACT: Understanding how individual behavior shapes the structure and ecology of populations is key to species conservation and management. Like many elasmobranchs, manta rays are
Protection from illegal fishing and shark recovery restructures mesopredatory fish communities
Protection from illegal fishing and shark recovery restructures mesopredatory fish communities on a coral reef Conrad W. Speed, Matthew J. Rees, Katherine Cure, Brigit Vaughan, Mark G. Meekan ABSTRACT: The recovery of communities of predatory fishes within a no‐take marine reserve after the eradication of illegal fishing provides an opportunity to examine the role of
Stable isotope analysis of dermal tissue reveals foraging behavior of whale sharks at Ningaloo Reef
Stable isotope analysis of dermal tissue reveals foraging behavior of whale sharks at Ningaloo Reef, Western Australia Lara Marcus, Patti Virtue, Peter D. Nichols, Luciana C. Ferreira, Heidi Pethybridge, Mark Meekan ABSTRACT: In order to examine the foraging behavior of whale sharks at Ningaloo Reef in Western Australia, stable isotope analysis of the dermis was
The acute physiological status of white sharks exhibits minimal variation after capture on SMART drumlines
The acute physiological status of white sharks (Carcharodon carcharias) exhibits minimal variation after capture on SMART drumlines R D Tate, B R Cullis, S D A Smith, B P Kelaher, C P Brand, C R Gallen, J W Mandelman, P A Butcher ABSTRACT: Drumlines incorporating SMART (Shark-Management-Alert-in-Real-Time) technology are a new tool used in several
Effects of temperature on the reproductive physiology of female elasmobranchs
Effects of temperature on the reproductive physiology of female elasmobranchs: The case of the narrownose smooth-hound shark (Mustelus schmitti) Elisio M, Awruch CA, Massa AM, Macchi GJ, Somoza GM ABSTRACT: The knowledge of how temperature influences elasmobranchs reproductive physiology allows a better understanding of their reproductive patterns. This study describes the relationship between temperature fluctuations
Shark and ray conservation research
Shark and ray conservation research: Absent where the need is greatest Alec B.M. Moore, R. Dean Grubbs ABSTRACT: No abstract is available for this article. Aquatic Conservation, Early View Version, DOI: 10.1002/aqc.3192 SOURCE
Shark Fin Regulations in the United States
Shark Fin Regulations in the United States: Animal Welfare, Cultural, and Policy Considerations John Chung-En Liu, Brandon Gertz, Naomi Newman ABSTRACT: Sharks play critical roles in the marine ecosystem, and they face serious threats due to overfishing. Conservation efforts have focused on the consumption of shark fins, especially the “finning” practice that removes the fins
Element composition of shark vertebrae shows promise as a natural tag
Element composition of shark vertebrae shows promise as a natural tag J. C. A. Pistevos, P. Reis-Santos, C. Izzo, B. M. Gillanders ABSTRACT: Reconstructing movements and environmental histories of sharks may be possible by using the element composition of vertebrae, but unlocking such possibilities requires an understanding of the effects of extrinsic and intrinsic factors
Mesoscale eddies release pelagic sharks from thermal constraints
Mesoscale eddies release pelagic sharks from thermal constraints to foraging in the ocean twilight zone Camrin D. Braun, Peter Gaube, Tane H. Sinclair-Taylor, Gregory B. Skomal, and Simon R. Thorrold ABSTRACT: Mesoscale eddies are critical components of the ocean’s “internal weather” system. Mixing and stirring by eddies exerts significant control on biogeochemical fluxes in the
Reproductive biology, multiple paternity and polyandry of the bull shark
Reproductive biology, multiple paternity and polyandry of the bull shark Carcharhinus leucas Agathe Pirog, Hélène Magalon, Thomas Poirout, Sébastien Jaquemet ABSTRACT: To improve understanding of bull shark Carcharhinus leucas reproductive biology, we analysed reproductive traits from 118 bull sharks caught along Reunion Island coasts (Western Indian Ocean), including 16 gravid females. Specific microsatellite loci were
Bright Green Biofluorescence in Sharks Derives from Bromo-Kynurenine Metabolism
Bright Green Biofluorescence in Sharks Derives from Bromo-Kynurenine Metabolism Hyun Bong Park, Yick Chong Lam, Jean P.Gaffney, James C.Weaver, Sara Rose Krivoshik, Randy Hamchand, Vincent Pieribone, David F. Gruber, Jason M. Crawford ABSTRACT: Although in recent years there has been an increased awareness of the widespread nature of biofluorescence in the marine environment, the diversity
Global diet analysis of 23 species of chondrichthyes
Feeding together: a global diet analysis of twenty-three species of chondrichthyes on a feeding ground area Mauro Belleggia, Cristian Battagliotti, Federico Cortés, Jorge Horacio Colonello ABSTRACT: A global analysis of the diet of chondrichthyes (23 species) was conducted during one bottom-trawl research cruise in the region where the highest catches of skates occurred off southwestern