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Reproductive biology of the guitarfish from the western South Atlantic Ocean
Published online on 30. November 2012 Reproductive biology of the guitarfish Rhinobatos percellens (Chondrichthyes, Rhinobatidae) from the São Paulo Coast, Brazil, western South Atlantic Ocean F. Rocha and O. B. F. Gadig ABSTRACT: The reproductive biology of the guitarfish Rhinobatos percellens was studied from 751 specimens caught by bottom pair trawlers off the coast of
Spatial Heterogeneity in Fishing Creates Refugia for Elasmobranchs in Celtic Sea
Published on 14. November 2012 Spatial Heterogeneity in Fishing Creates de facto Refugia for Endangered Celtic Sea Elasmobranchs Samuel Shephard, Hans Gerritsen, Michel J. Kaiser, David G. Reid ABSTRACT: The life history characteristics of some elasmobranchs make them particularly vulnerable to fishing mortality; about a third of all species are listed by the IUCN as
Biomarkers of Whale Shark Health
Published on 15. November 2012 Biomarkers of Whale Shark Health: A Metabolomic Approach Alistair D. M. Dove, Johannes Leisen, Manshui Zhou, Jonathan J. Byrne, Krista Lim-Hing, Harry D. Webb, Leslie Gelbaum, Mark R. Viant, Julia Kubanek, Facundo M. Fernández ABSTRACT: In a search for biomarkers of health in whale sharks and as exploration of metabolomics
Archival pop-off tag tracking of Greenland sharks in Norway
Published online on 14. November 2012 Archival pop-off tag tracking of Greenland sharks Somniosus microcephalus in the High Arctic waters of Svalbard, Norway Aaron T. Fisk,Christian Lydersen, Kit M. Kovacs ABSTRACT: The Greenland shark Somniosus microcephalus is the largest fish in Arctic waters and a significant predator that is likely numerous, but little is known
Origin of the white shark based on recalibration of the Upper Neogene Pisco Formation of Peru
Published online on 14. November 2012 Origin of the white shark Carcharodon (Lamniformes: Lamnidae) based on recalibration of the Upper Neogene Pisco Formation of Peru EHRET, D. J., MACFADDEN, B. J., JONES, D. S., DEVRIES, T. J., FOSTER, D. A. and SALAS-GISMONDI, R. ABSTRACT: The taxonomic origin of the white shark, Carcharodon, is a highly
Population Trends in Pacific Oceanic Sharks and Shark Finning
Published online on 30. October 2012 Population Trends in Pacific Oceanic Sharks and the Utility of Regulations on Shark Finning Shelley C. Clarke, Shelton J. Harley, Simon D. Hoyle, Joel S. Rice ABSTRACT: Accurate assessment of shark population status is essential for conservation but is often constrained by limited and unreliable data. To provide a
News Media Portrayal of Sharks and Their Conservation
Published online on 30. October 2012 Australian and U.S. News Media Portrayal of Sharks and Their Conservation Bret A. Muter, Meredith L. Gore, Katie S. Gledhill, Christopher Lamont, Charlie Huveneers ABSTRACT: Investigation of the social framing of human–shark interactions may provide useful strategies for integrating social, biological, and ecological knowledge into national and international policy
Extraordinary growth in tiger sharks from the South Atlantic Ocean
Published online on 19. October 2012 Extraordinary growth in tiger sharks Galeocerdo cuvier from the South Atlantic Ocean A. S. Afonso, F. H. V. Hazin, R. R. Barreto, F. M. Santana, R. P. Lessa ABSTRACT: Two tagged-and-recaptured tiger sharks Galeocerdo cuvier, measuring 172 and 304 cm total length (LT) and at age 0·75 and 3·50
Manta rays in the Marquesas Islands
Published online on 19. October 2012 Manta rays in the Marquesas Islands: first records of Manta birostris in French Polynesia and most easterly location of Manta alfredi in the Pacific Ocean, with notes on their distribution J. Mourier ABSTRACT: Based on direct observations of free-ranging specimens, the giant manta ray Manta birostris is reported from
A new record of whale shark in Brazilian waters
Published online on 16. October 2012 A new record of whale shark Rhincodon typus in Brazilian waters: a report of association with Caranx crysos R. Andrades, H. T. Pinheiro, R. G. Santos, A. S. Martins, P. A. S. Costa ABSTRACT: In May 2011, a Rhincodon typus was sighted on the continental shelf of the central
Experimental infection of yellow stingrays with marine leech
Published online on 10. October 2012 Experimental infection of yellow stingrays Urobatis jamaicensis with the marine leech Branchellion torpedinis David P. Marancik, Alistair D. Dove, Alvin C. Camus ABSTRACT: Infestations of elasmobranchs by the marine leech Branchellion torpedinis can be problematic in aquaria and negatively affect host health. To better characterize the extent and pathogenesis
Reproductive Biology of the Shortspine Spurdog
Published on 01. October 2012 Reproductive Biology of the Shortspine Spurdog Squalus cf. Mitsukurii in the Southwest Waters of Japan Furumitsu, Keisuke; Kume, Gen; Minei, Yuki; Yamaguchi, Atsuko ABSTRACT: Reproductive characteristics of the shortspine spurdog, Squalus cf. mitsukurii Jordan and Snyder, 1903, were examined based on specimens collected around Ishigaki Island, Okinawa, Japan. Females reached sexual maturity at
Feeding biomechanics and bite force in bull sharks during ontogeny
Published online on 02. October 2012 Feeding biomechanics and theoretical calculations of bite force in bull sharks (Carcharhinus leucas) during ontogeny Maria L. Habeggera, Philip J. Mottaa, Daniel R. Huberb, Mason N. Dean ABSTRACT: Evaluations of bite force, either measured directly or calculated theoretically, have been used to investigate the maximum feeding performance of a
Spatial learning and memory retention in the grey bamboo shark
Published online on 03. October 2012 Spatial learning and memory retention in the grey bamboo shark (Chiloscyllium griseum) Vera Schluessel and Horst Bleckmann ABSTRACT: Like other vertebrates, fish can learn to solve a wide variety of tasks; however, many of their cognitive abilities, particularly in cartilaginous fishes, still remain unknown. This study investigated memory retention
Elasmobranch gillnet fishery in the Gulf of Gabès
Published online on 11. October 2012 Preliminary data on elasmobranch gillnet fishery in the Gulf of Gabès, Tunisia K. Echwikhi, B. Saidi, M. N. Bradai, A. Bouain ABSTRACT: Elasmobranchs are an important catch component in Tunisian artisanal fisheries. Generally, species-specific information is largely unavailable for artisanal fisheries; an increase in knowledge thereof is essential to