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Cone monochromacy and visual pigment spectral tuning in wobbegong sharks
Published online before print September 19, 2012 Cone monochromacy and visual pigment spectral tuning in wobbegong sharks Susan M. Theiss, Wayne I. L. Davies, Shaun P. Collin, David M. Hunt and Nathan S. Hart ABSTRACT: Much is known regarding the evolution of colour vision in nearly every vertebrate class, with the notable exception of the
Social learning in juvenile lemon sharks
Published online on 30. August 2012 Social learning in juvenile lemon sharks, Negaprion brevirostris Tristan L. Guttridge, Sander van Dijk, Eize J. Stamhuis, Jens Krause, Samuel H. Gruber und Culum Brown ABSTRACT: Social learning is taxonomically widespread and can provide distinct behavioural advantages, such as in finding food or avoiding predators more efficiently. Although extensively
An Overview of Shark Utilisation in the Coral Triangle Region
REPORT: An Overview of Shark Utilisation in the Coral Triangle Region Published by WWF, 06 September 2012 The report, An Overview of Shark Utilization in the Coral Triangle Region, examines the catch, trade, and management of sharks in waters of the six Coral Triangle countries, plus the neighbouring countries of Vietnam and Fiji. Despite long-standing
A new species of eagle ray from the Southwestern Atlantic
Puplished online in August 2012 Morphology and DNA barcoding reveal a new species of eagle ray from the Southwestern Atlantic: Myliobatis ridens sp. nov. (Chondrichthyes, Myliobatiformes, Myliobatidae) N.L. Ruocco, L.O. Lucifora, J.M.D. de Astarloa, E. Mabragaña, and S.M. Delpiani ABSTRACT: Two species of Myliobatis, the southern eagle ray M. goodei Garman and the bullnose eagle
Support for behavioural thermoregulation in reef sharks
Published online on 30. August 2012 Heat-seeking sharks: support for behavioural thermoregulation in reef sharks Speed CW, Meekan MG, Field IC, McMahon CR, Bradshaw CJA ABSTRACT: Most fish are ectotherms and for this reason, water temperature is thought to be one of the main physical determinants of behaviour. We tested the hypothesis that behavioural thermoregulation
Discards of sharks by Brazilian leased fleet in 2010
Discards of sharks by Brazilian leased fleet in 2010 Andrade, H.A., Ribeiro Simoni, M.E. and Almeida de Melo, M.P. SUMMARY: The pelagic longline fishery catches not only tuna and tuna-like species but also sharks as bycatch. There are some concerns about the populations of sharks that are probably very vulnerable to fisheries. Also, there are
Habitat use and movements patterns of oceanic whitetip, bigeye thresher and dusky sharks
Habitat use and movements patterns of oceanic whitetip, bigeye thresher and dusky sharks based on archival satellite tags. Carlson, J.K. and Gulak, S.J.B. SUMMARY: As part of a larger program to determine the habitat use and movement patterns of pelagic and semi-pelagic sharks, satellite pop-up archival transmitting (PAT) tags have been deployed on sharks in
Review of information of other sharks caught by Japanese longliners in the Atlantic
Review of information of other sharks caught by Japanese longliners in the Atlantic. Yokawa, K. and Ando, T. SUMMARY: In the late-1990s, the Japanese longline logbook system started collecting catch information on oceanic whitetip shark and thresher sharks. In the present study, the logbook information on these sharks was quickly reviewed from the view point
Standardization CPUE of shortfin mako sharks caught by Japanese longliners in the Atlantic
Standardization CPUE of shortfin mako sharks caught by Japanese longliners in the Atlantic in the period between 1994 and 2009. Kimoto, A. and Yokawa, K. SUMMARY: The Japanese logbook system for distant-water longliners started collecting shortfin mako data in 1994. Because part of the Japanese longliners released/discarded their shortfin mako catch and the Japanese logbook
Standardized CPUE for blue sharks caught by the Japanese longline fishery in the Atlantic Ocean
Standardized CPUE for blue sharks caught by the Japanese longline fishery in the Atlantic Ocean. Hiraoka, Y. and Yokawa, K. SUMMARY: The standardized CPUEs of blue shark in the North and South Atlantic are updated to 2009 by the new models in the short- and long-term, respectively. The trends of standardized CPUEs given by the
Preliminary results of standardized CPUE for porbeagle in the South Atlantic
Preliminary results of standardized CPUE for porbeagle in the South Atlantic from Japanese longline logbook data between 1994 and 2010. Semba, Y. and Yokawa, K. SUMMARY: CPUE (catch per unit effort) for porbeagle caught by the Japanese longline fishery in the South Atlantic was standardized using filtered logbook data from 1994 to 2010. There was
Stomach Contents of Mako Sharks caught off Brazil
Stomach contents analysis of shortfin mako (Isurus oxyrinchus) caught off southern Brazil: A Bayesian analysis. Gorni, G.R., Loibel, S., Goitein, R. and Amorim, A.F. SUMMARY: This study proposes to ascertain the importance of each alimentary category in the Isurus oxyrinchus diet composition, as well, to reinforce the use of the Bayesian approach for analysis of
Climate Change Impacts on Pelagic Fishes and Sharks in Australia
Pelagic fishes and sharks. In A Marine Climate Change Impacts and Adaptation Report Card for Australia 2012 Alistair J Hobday, Tim Ward, Shane Griffiths SUMMARY : Pelagic fishes and sharks occupy surface waters from the coast to the open ocean. There are ~260 pelagic species around Australia. While some of the most well known are
First record of a whale shark in continental Europe
Published online on 13. August 2012 First record of a whale shark Rhincodon typus in continental Europe Rodrigues, N. V., Correia, J. P. S., Graça, J. T. C., Rodrigues, F., Pinho, R. and Hirofumi, M. ABSTRACT: A whale shark Rhincodon typus was found in a set-net in southern Portugal in October 2011. This was the
Reproductive Ecology of two sympatric Blacktip sharks in Australia
Published online on 15. August 2012 Comparison of the reproductive ecology of two sympatric blacktip sharks (Carcharhinus limbatus and Carcharhinus tilstoni) off north-eastern Australia with species identification inferred from vertebral counts Harry, A. V., Morgan, J. A. T., Ovenden, J. R., Tobin, A. J., Welch, D. J. and Simpfendorfer, C. A. ABSTRACT: Precaudal vertebral counts