Scientific Papers

The Energetics of Shark and Ray Megafauna

The Energetics of Shark and Ray Megafauna

Powering Ocean Giants: The Energetics of Shark and Ray Megafauna Christopher L. Lawson, Lewis G. Halsey, Graeme C. Hays, Christine L. Dudgeon, Nicholas L. Payne, Michael B. Bennett, Craig R. White, Anthony J. Richardson ABSTRACT: Shark and ray megafauna have crucial roles as top predators in many marine ecosystems, but are currently among the most

Acoustic accelerometry reveals diel activity patterns in premigratory Port Jackson sharks

Acoustic accelerometry reveals diel activity patterns in premigratory Port Jackson sharks

Acoustic accelerometry reveals diel activity patterns in premigratory Port Jackson sharks Julianna Kadar, Monique Ladds, Johann Mourier, Joanna Day, Culum Brown ABSTRACT: Distinguishing the factors that influence activity within a species advances understanding of their behavior and ecology. Continuous observation in the marine environment is not feasible but biotelemetry devices provide an opportunity for detailed

Global spatial risk assessment of sharks

Global spatial risk assessment of sharks

Global spatial risk assessment of sharks under the footprint of fisheries Nuno Queiroz, Nicolas E. Humphries, David W. Sims, et al. ABSTRACT: Effective ocean management and conservation of highly migratory species depends on resolving overlap between animal movements and distributions and fishing effort. Yet, this information is lacking at a global scale. Here we show,

Seasonal trends in whale shark sightings in an established tourism site

Seasonal trends in whale shark sightings in an established tourism site

Seasonal trends in whale shark Rhincodon typus sightings in an established tourism site in the Gulf of California, Mexico D. A. Whitehead, D. Petatán‐Ramírez, D. Olivier, R. González Armas, F. Pancaldi, F. Galván‐Magaña ABSTRACT: The number of individual whale shark Rhincodon typus sightings registered October 2015–March 2018 in Bahia de La Paz, Mexico, ranged from

Shark and ray entanglement in anthropogenic marine debris

Shark and ray entanglement in anthropogenic marine debris

Global review of shark and ray entanglement in anthropogenic marine debris Kristian J. Parton, Tamara S. Galloway, Brendan J. Godley ABSTRACT: Numerous marine taxa become entangled in anthropogenic marine debris, including cartilaginous fishes (class: Chondrichthyes, e.g. elasmobranchs , holocephalans ). Here we review research that has been conducted on the susceptibility of

Updated taxonomic list and conservation status of chondrichthyans from Venezuela

Updated taxonomic list and conservation status of chondrichthyans from Venezuela

Updated taxonomic list and conservation status of chondrichthyans from the exclusive economic zone of Venezuela, with first generic and specific records Nicolás R. Ehemann, Lorem D. V. González‐González, Alejandro Tagliafico, Simon Weigmann ABSTRACT: Using the last taxonomic review of chondrichthyans of the world, we selected the species distributed in the north‐western Atlantic Ocean (NWA) and

Planonasus indicus sp. n., a new species of pygmy false catshark

Planonasus indicus sp. n., a new species of pygmy false catshark

Planonasus indicus sp. n., a new species of pygmy false catshark (Chondrichthyes: Carcharhiniformes: Pseudotriakidae), with a revised diagnosis of the genus and key to the family David A. Ebert, K. V. Akhilesh, Simon Weigmann ABSTRACT: A new species of the genus Planonasus is described from off southwestern India and Sri Lanka in the northern Indian

Bite performance and feeding behaviour of the sand tiger shark

Bite performance and feeding behaviour of the sand tiger shark

Bite performance and feeding behaviour of the sand tiger shark Carcharias taurus Joshua K. Moyer, Stephanie F. Shannon, Duncan J. Irschick ABSTRACT: This study examines the feeding behaviour and kinematics of three sub‐adult sand tiger sharks Carcharias taurus on display at Mystic Aquarium (Mystic, Connecticut, USA). Using high‐speed video data from 52 bites, we identify

On the Capture of a Blue Shark in Peter the Great Bay

On the Capture of a Blue Shark in Peter the Great Bay

SHORT COMMUNICATIONS On the Capture of a Blue Shark, Prionace glauca (Carcharhinidae), in Peter the Great Bay V. N. Dolganov ABSTRACT: The capture of a blue shark, Prionace glauca, with a body length of 108.5 cm in Peter the Great Bay, Sea of Japan, is reported. Its measurable traits, dental formula, and number of arterial cone valves

Quarter-Century-Old Shark Bite Mystery Solved

Quarter-Century-Old Shark Bite Mystery Solved

DNA from Tooth Embedded in Man’s Foot Resolves Quarter-Century-Old Shark Bite Mystery Lei Yang, John S.S. Denton, Shannon Corrigan, Tyler B.T. Bowling, Gavin J.P. Naylor ABSTRACT: Shark attacks are rare, but when they occur they generate substantial media, public, and other interest. The aftermath of an attack has the potential to influence public attitudes toward

Elasmobranch bycatch in the Gulf of Papua, Papua New Guinea

Elasmobranch bycatch in the Gulf of Papua, Papua New Guinea

Elasmobranch bycatch in the demersal prawn trawl fishery in the Gulf of Papua, Papua New Guinea W. T. White, L. Baje, C. A. Simpfendorfer, S. A. Appleyard, A. Chin, B. Sabub, E. Rochel, G. J. P. Naylor ABSTRACT: The elasmobranch bycatch of the Gulf of Papua Prawn Fishery is investigated in detail for the first

De novo innovation allows shark parasitism and global expansion of the barnacle Anelasma squalicola

De novo innovation allows shark parasitism and global expansion of the barnacle Anelasma squalicola

De novo innovation allows shark parasitism and global expansion of the barnacle Anelasma squalicola David J. Rees, Christoph Noever, Brit Finucci, Kareen Schnabel, Robin E. Leslie, Jim Drewery, Helge Olsen, Theil Bergum, Adele Dutilloy, Henrik Glenner ABSTRACT: The barnacle Anelasma squalicola is a marine epibiont found on members of the species-rich, deep-sea lantern shark family

Simulation-based evaluation of reserve network performance for Southern Dogfish

Simulation-based evaluation of reserve network performance for Southern Dogfish

Simulation-based evaluation of reserve network performance for Centrophorus zeehaani (Centrophoridae): a protected deep-sea gulper shark Ross K Daley, Alistair J Hobday, Jayson M Semmens ABSTRACT: Resource use and conservation objectives can conflict where protected species and commercially fished species occur together. We tested the potential for a previously overfished deep-sea shark (Centrophorus zeehaani) with very

Character based identification system for Elasmobranchs

Character based identification system for Elasmobranchs

Character based identification system for Elasmobranchs for conservation and forensic applications Sneha Vargheese, Labrechai Mog Chowdhury, Shijin Ameri, Anjela mercy A, Kathirvelpandian A ABSTRACT: The term Elasmobranchs or Chondrichthyans refer to the group of marine organisms include sharks, skates, rays and chimeras. Due to high demand most of the Elasmobranch species depleted drastically in recent

A new catshark species (genus Parmaturus) from Brazil

A new catshark species (genus Parmaturus) from Brazil

A New Species of Parmaturus (Chondrichthyes: Carcharhiniformes: Scyliorhinidae) from Brazil, Southwestern Atlantic Karla Diamantina De Araújo Soares, Marcelo Rodrigues De Carvalho, Paulo Ricardo Schwingel, Otto Bismarck Fazzano Gadig ABSTRACT: A new Southwestern Atlantic species of Parmaturus, P. angelae, new species, is described from two specimens captured off Brazil. It is distinguished from congeners by the