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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
Non-lethal efforts to deter shark predation of Hawaiian monk seal pups
Published on 14. September 2012 Non-lethal efforts to deter shark predation of Hawaiian monk seal pups Kathleen S. Gobush and Shawn C. Farry ABSTRACT: More than a decade of shark predation on nursing and newly weaned pups of the endangered Hawaiian monk seal (Monachus schauinslandi) has significantly contributed to a steep decline of the French
Thesis: The magnitude and global distribution of the shark fin trade
Published in September 2012 Using shark catch data to estimate the magnitude and global distribution of the shark fin trade Leah Elisabeth Biery ABSTRACT: China’s economic growth in recent years has led to a rapid increase in shark fin soup consumption, fueling the demand for shark fins and encouraging fishers worldwide to engage in shark
The status of the whale shark watching tourist industry in Oslob
Report on the status of the whale shark watching tourist industry in Tan-awan, Oslob, Cebu. This report has been written by Samantha Craven Oslob’s Whale Shark Project Coordinator BSc. Marine Biology (Hons), MSc. Applied Marine Science University of Plymouth, (UK) September 2012 Preface This report is the result of 5 months of intensive work and
Feeding chronology of six species of carcharhinid sharks in the western North Atlantic Ocean
Published online on 28. September 2012 Feeding chronology of six species of carcharhinid sharks in the western North Atlantic Ocean as inferred from longline capture data William B. Driggers III, Matthew D. Campbell, Eric R. Hoffmayer, G. Walter Ingram Jr. ABSTRACT: Time-at-capture data for 6 species of carcharhinid sharks were collected during 2692 fishery-independent longline
Movement and habitat use by the spine-tail devil ray in the Eastern Pacific Ocean
Published online on 28. September 2012 Movement and habitat use by the spine-tail devil ray in the Eastern Pacific Ocean Donald A. Croll, Kelly M. Newton, Kevin Weng, Felipe Galván-Magaña, John O’Sullivan, Heidi Dewar ABSTRACT: The devil-ray family Mobulidae (order Myliobatiformes) comprises wide-ranging, pelagic batoids, but little is known about their basic ecology. We present
Ontogenetic and individual dietary variation within Northeast Pacific white shark population
Published on 28. September 2012 Ontogenetic and Among-Individual Variation in Foraging Strategies of Northeast Pacific White Sharks Based on Stable Isotope Analysis Kim SL, Tinker MT, Estes JA, Koch PL ABSTRACT: There is growing evidence for individuality in dietary preferences and foraging behaviors within populations of various species. This is especially important for apex predators,
Predicted habitat shifts of Pacific top predators in a changing climate
Published online on 23. September 2012 Predicted habitat shifts of Pacific top predators in a changing climate Elliott L. Hazen, Salvador Jorgensen, Ryan R. Rykaczewski, Steven J. Bograd, David G. Foley, Ian D. Jonsen, Scott A. Shaffer, John P. Dunne, Daniel P. Costa, Larry B. Crowder and Barbara A. Block ABSTRACT: To manage marine ecosystems
Morphological and molecular differentiation of smooth-hound sharks from the Gulf of California
Published online on 24. September 2012 Morphological and molecular differentiation of smooth-hound sharks (Genus Mustelus, Family Triakidae) from the Gulf of California Pérez-Jiménez, J. C., Rocha-Olivares, A. and Sosa-Nishizaki, O. ABSTRACT: The genus Mustelus is the most species-rich of the widespread family Triakidae whereby its taxonomy and systematics have been historically challenging. They represent a
CMS Sharks Memorandum of Understanding
CONVENTION ON MIGRATORY SPECIES FIRST MEETING OF THE SIGNATORIES TO THE MEMORANDUM OF UNDERSTANDING ON THE CONSERVATION OF MIGRATORY SHARKS Bonn, Germany, 24-27 September 2012 Agenda Item 7 BACKGROUND PAPER ON THE CONSERVATION STATUS OF MIGRATORY SHARKS CMS/Sharks/MOS1/Doc.7.4 20 September 2012 PDF – DOWNLOAD
Ontogenetic dietary shifts and feeding ecology of the rasptail skate and the brown smoothhound shark
Published online on 20. September 2012 Ontogenetic dietary shifts and feeding ecology of the rasptail skate Raja velezi and the brown smoothhound shark Mustelus henlei along the Pacific coast of Costa Rica, Central America Espinoza, M., Clarke, T. M., Villalobos-Rojas, F. and Wehrtmann, I. S. ABSTRACT: Stomachs from 511 Raja velezi and 340 Mustelus henlei