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Physiological markers suggest energetic and nutritional adjustments in male sharks linked to reproduction
Physiological markers suggest energetic and nutritional adjustments in male sharks linked to reproduction Bianca S. Rangel, Neil Hammerschlag, James A. Sulikowski, Renata Guimarães Moreira ABSTRACT: Energetic condition is one of the most important factors that influence fitness and reproductive performance in vertebrates. Yet, we lack evidence on how energetic states change in response to reproduction
Basking shark sub-surface behaviour
Basking shark sub-surface behaviour revealed by animal-towed cameras Jessica L. Rudd, Tiago Bartolomeu, Haley R. Dolton, Owen M. Exeter, Christopher Kerry, Lucy A. Hawkes, Suzanne M. Henderson, Marcus Shirley, Matthew J. Witt ABSTRACT: While biologging tags have answered a wealth of ecological questions, the drivers and consequences of movement and activity often remain difficult to
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 D.M. Dove, Timothy D. Read ABSTRACT: Chondrichthyes (cartilaginous fishes) are fundamental for understanding vertebrate evolution, yet their genomes are understudied. We report long-read sequencing of
Checklist of Chondrichthyans in Cyprus
Integrating Literature, Biodiversity Databases, and Citizen-Science to Reconstruct the Checklist of Chondrichthyans in Cyprus (Eastern Mediterranean Sea) Ioannis Giovos, Fabrizio Serena, Dimitra Katsada, Athanasios Anastasiadis, Adi Barash, Charis Charilaou, Jason M. Hall-Spencer, Fabio Crocetta, Alexander Kaminas, Demetris Kletou, Mary Maximiadi, Vasileios Minasidis, Dimitrios K. Moutopoulos, Roxani Naasan Aga-Spyridopoulou, Ioannis Thasitis, Periklis Kleitou ABSTRACT: Chondrichthyans are
The diet of porbeagle shark Lamna nasus
Eating catch of the day: The diet of porbeagle shark Lamna nasus (Bonnaterre 1788) based on stomach content analysis, and the interaction with trawl fisheries in the southwestern Atlantic (52°S–56°S) Belleggia Mauro, Colonello Jorge, Cortés Federico, Figueroa Daniel ABSTRACT: The present work examined the diet of the porbeagle shark Lamna nasus in the Southwest Atlantic
Complex Human-Shark Conflicts Confound Conservation Action
Complex Human-Shark Conflicts Confound Conservation Action Colin A. Simpfendorfer, Michelle R. Heupel, Dave Kendal ABSTRACT: Human-wildlife conflicts are a growing phenomenon globally as human populations expand and wildlife interactions become more commonplace. While these conflicts have been well-defined in terrestrial systems, marine forms are less well-understood. As concerns grow for the future of many shark
Conventional tagging of sharks in Western Australia
Conventional tagging of sharks in Western Australia: the main commercial species exhibit contrasting movement patterns Saia Bartes , Colin Simpfendorfer , Terence I. Walker, Carissa King, Neil Loneragan, Matías Braccini ABSTRACT: Understanding movement patterns underlies effective management and conservation measures. The current study summarises the main findings from a tagging program of Western Australian sharks
All we know about the crocodile shark Pseudocarcharias kamoharai
All we know about the crocodile shark (Pseudocarcharias kamoharai): Providing information to improve knowledge of this species Richard Kindong, Meng Xia, Njomoue Achille Pandong, Ousmane Sarr, Feng Wu, Siquan Tian, Xiaojie Dai ABSTRACT: Despite their global distribution across major oceans, biological and fisheries information related to the crocodile shark (Pseudocarcharias kamoharai) is still scarce. The
Potential factors influencing the condition of demersal sharks in the Mediterranean deep sea ecosystems
Potential factors influencing the condition of demersal sharks in the Mediterranean deep sea ecosystems Francesc Ordines, Maria Valls, María José Meléndez, Sergio Ramírez-Amaro, Eduardo López, Josep Lloret, Mariel Rodríguez, M. Teresa Farriols, Beatriz Guijarro, Cristina García-Ruiz, Enric Massutí ABSTRACT: The Alboran Sea and the Balearic Islands are two contrasting areas in terms of primary productivity.
Transfer DNA technique to identify species involved in shark bite incidents
Development and successful real-world use of a transfer DNA technique to identify species involved in shark bite incidents Derek Kraft PhD, Lauren Meyer PhD, Maryann Webb BS, Kaylee Scidmore-Rossing BS, Charlie Huveneers PhD, Eric Clua PhD, Carl Meyer PhD ABSTRACT: Identifying the species involved in shark bite incidents is an ongoing challenge but is important
Dynamic use of coastal areas by bull sharks
Dynamic use of coastal areas by bull sharks and the conciliation of conservation and management of negative human–wildlife interactions Johann Mourier, Marc Soria, Antonin Blaison, Monique Simier, Grégoire Certain, Angélique Demichelis, Tarek Hattab ABSTRACT: Knowledge about spatial and temporal variability in the distribution and abundance of predators is necessary to adapt measures to mitigate human–wildlife
Environmental preferences of sharks bycaught by the tuna purse-seine fishery
Environmental preferences of sharks bycaught by the tuna purse-seine fishery in the Eastern Pacific Ocean Eric Díaz-Delgado, Osman Crespo-Neto, Raúl O. Martínez-Rincón ABSTRACT: Sharks play important ecological roles in marine ecosystems. However, due to their life-history traits and low resilience, their vulnerability increases with overexploitation. The Eastern Pacific Ocean (EPO) purse-seine fishery catches several pelagic
A hitchhiker guide to manta rays
A hitchhiker guide to manta rays: Patterns of association between Mobula alfredi, M. birostris, their symbionts, and other fishes in the Maldives Aimee E. Nicholson-Jack, Joanna L. Harris, Kirsty Ballard, Katy M. E. Turner, Guy M. W. Stevens ABSTRACT: Despite being among the largest and most charismatic species in the marine environment, considerable gaps remain
Resource partitioning between fisheries and endangered sharks
Resource partitioning between fisheries and endangered sharks in a tropical marine food web Viviana Márquez-Velásquez, Andrés F Navia, Ricardo S Rosa, Paulo R Guimarães, Jr, Rafael L G Raimundo ABSTRACT: Fisheries can act as top predators and affect marine biodiversity and ecosystem functioning via their target species. We studied a coastal food web in the
Probable nursery habitat for critically endangered great hammerhead on the US Atlantic Coast
First identification of probable nursery habitat for critically endangered great hammerhead Sphyrna mokarran on the Atlantic Coast of the United States Catherine Macdonald, Jacob Jerome, Christian Pankow, Nicholas Perni, Kristina Black, David Shiffman, Julia Wester ABSTRACT: Great hammerheads (Sphyrna mokarran) have undergone significant global population declines and were assessed as Critically Endangered by the IUCN