Home » Archives
Feeding requirements of white sharks may be higher than thought
Published on 18. March 2013 Feeding requirements of white sharks may be higher than originally thought J. M. Semmens, N. L. Payne, C. Huveneers, D. W. Sims & B. D. Bruce ABSTRACT: Quantifying the energy requirements of animals in nature is critical for understanding physiological, behavioural, and ecosystem ecology; however, for difficult-to-study species such as
Heavy metal concentrations of two highly migratory sharks
Published on 18. March 2013 Heavy metal concentrations of two highly migratory sharks ( Prionace glauca and Isurus oxyrinchus ) in the southeastern Pacific waters: comments on public health and conservation Lopez, S. A. Abarca, N. L. and Meléndez R. ABSTRACT: Despite the importance of sharks in structuring the marine food web, their biomass is
Frequency of Multiple Paternity in Gummy Shark and Rig
Published online on 15. March 2013 Frequency of Multiple Paternity in Gummy Shark, Mustelus antarcticus, and Rig, Mustelus lenticulatus, and the Implications of Mate Encounter Rate, Postcopulatory Influences, and Reproductive Mode Jessica J. Boomer, Robert G. Harcourt, Malcolm P. Francis, Terence I. Walker, Juan Matias Braccini and Adam J. Stow ABSTRACT: Elasmobranchs (sharks and rays)
Generalized Linear Models and Generalized Estimation Equations to model at-haulback mortality of blue sharks
Published online on 14. March 2013 Application of Generalized Linear Models and Generalized Estimation Equations to model at-haulback mortality of blue sharks captured in a pelagic longline fishery in the Atlantic Ocean Rui Coelho, Paulo Infante, Miguel N. Santos ABSTRACT: At-haulback mortality of blue shark (Prionace glauca) captured by the Portuguese pelagic longline fishery targeting
Oceanic whitetip sharks caught by the Brazilian tuna longline fleet
Size, distribution and catch rates of the oceanic whitetip shark caught by the Brazilian tuna longline fleet Mariana Travassos Tolotti, Paulo Travassos, Flávia Lucena Frédou, Catarina Wor, Fábio Hazin ABSTRACT: Catch and effort data from 14,835 longline sets conducted by foreign tuna longline vessels chartered by Brazil, from 2004 to 2010, were analyzed aiming at
No effect from rare-earth metal deterrent on shark bycatch
No effect from rare-earth metal deterrent on shark bycatch in a commercial pelagic longline trial Aurelie Cosandey Godin, Tonya Wimmer, John H. Wang, Boris Worm ABSTRACT: The indiscriminate capture of non-target organisms (bycatch) in commercial fisheries undermines the sustainable development of marine resources. In the Northwest Atlantic, blue sharks (Prionace glauca) account for most of
Reproductive biology and fisheries of mako and blue sharks in the Pacific Ocean
Insights into the reproductive biology and fisheries of two commercially exploited species, shortfin mako (Isurus oxyrinchus) and blue shark (Prionace glauca), in the south-east Pacific Ocean Carlos Bustamante, Michael B. Bennett ABSTRACT: In 2005 and 2010, 1241 Isurus oxyrinchus and 1153 Prionace glauca were collected from 178 longline sets in a ship-board observer programme in
DNA Identification of Human Remains Obtained from a Tiger Shark
Published on January 31, 2013 DNA Identification of Human Remains Obtained from a Tiger Shark Sheria L. King, Shelley Johnson, Marisa Roe, Thomas Reynolds and Ellison E. Greenslade CASE SUMMARY : On September 4, 2010, a local investment banker caught a 12-foot tiger shark while on a deep-sea fishing trip off the coast of New
Study on freshness of blue sharks landed in Japan
Published in March 2013 The market value of freshness: observations from the swordfish and blue shark longline fishery Gakushi Ishimura, Megan Bailey ABSTRACT: One important component in determining the market value of fish is freshness, essentially the time period from capture to consumer. By shortening the time from harvest to landing, freshness can be improved
Population structure and residency patterns of the blacktip reef shark
Published online on 12. March 2013 Population structure and residency patterns of the blacktip reef shark Carcharhinus melanopterus in turbid coastal environments A. Chin, A. J. Tobin, M. R. Heupel, C. A. Simpfendorfer ABSTRACT: This study examined the characteristics of a blacktip reef shark Carcharhinus melanopterus population in turbid coastal habitats through a multi-year fishery-independent
Global catches, exploitation rates, and rebuilding options for sharks
Final Version to be published in July 2013 Global catches, exploitation rates, and rebuilding options for sharks Boris Worm, Brendal Davis, Lisa Kettemer, Christine A. Ward-Paige, Demian Chapman, Michael R. Heithaus, Steven T. Kessel, Samuel H. Gruber ABSTRACT: Adequate conservation and management of shark populations is becoming increasingly important on a global scale, especially because
Chemical shark repellent: Myth or fact ?
Published online on 05. February 2013 Chemical shark repellent: Myth or fact? The effect of a shark necromone on shark feeding behavior Eric M. Stroud, Craig P. O’Connell, Patrick H. Rice, Nicholas H. Snow, Brian B. Barnes, Mohammed R. Elshaer, James E. Hanson ABSTRACT: Since 1942, the search for an effective chemical shark repellent has
First report of an embryonic dusky shark with cyclopia
Published in January 2013 First report of an embryonic dusky shark (Carcharhinus obscurus) with cyclopia and other abnormalities Olga Marcela Bejarano-Álvarez and Felipe Galván-Magaña ABSTRACT: We report the first record of an elasmobranch (shark) with cyclopia and other abnormalities (albinism, absence of nostrils, a bump on the snout and a slight abnormality in the vertebral
First record of the mandarin dogfish from Western Australia
Published in January 2013 First record of the mandarin dogfish Cirrhigaleus barbifer (Chondrichthyes: Squalidae) from Western Australia Ryan M. Kempster, David M. Hunt, Brett A. Human, Channing A. Egeberg and Shaun P. Collin ABSTRACT: The mandarin dogfish, Cirrhigaleus barbifer, is the only species in this genus found in Western Australia, and represents a significant range
First record of the sand tiger shark from United Arab Emirates waters
Published in January 2013 First record of the sand tiger shark, Carcharias taurus, from United Arab Emirates waters Rima W. Jabado, Saif M. Al Ghais, Waleed Hamza, Aaron C. Henderson and Mohamed A. Ahmad ABSTRACT: On 18 March 2012, a female specimen of the sand tiger shark, Carcharias taurus, measuring 256 cm, was by-caught by a