Published online on 20. March 2012 Reproductive variables of Urotrygon rogersi (Batoidea: Urotrygonidae): a species with a triannual reproductive cycle in the eastern tropical Pacific Ocean Mejía-Falla, P. A., Navia, A. F. and Cortés, E. ABSTRACT: Reproductive aspects of the round ray Urotrygon rogersi were studied based on 2005 specimens obtained in the artisanal shrimp
Published online on 20. March 2012 Species composition of skates (Rajidae) in commercial fisheries around the British Isles and their discarding patterns Silva, J. F., Ellis, J. R. and Catchpole, T. L. ABSTRACT: Recent regulations have required European nations to report commercial landings of Rajidae (skates) to species level since 2008. Morphological similarities between some
Published online on 20. March 2012 Assessing the potential for post-copulatory sexual selection in elasmobranchs Fitzpatrick, J. L., Kempster, R. M., Daly-Engel, T. S., Collin, S. P. and Evans, J. P. ABSTRACT: This review highlights the potential role that post-copulatory sexual selection plays in elasmobranch reproductive systems and the utility of this group to further
Published online on 21. March 2012 What is an ‘elasmobranch’? The impact of palaeontology in understanding elasmobranch phylogeny and evolution J. G. Maisey ABSTRACT: The Subclass Elasmobranchii is widely considered nowadays to be the sister group of the Subclass Holocephali, although chimaeroid fishes were originally classified as elasmobranchs along with modern sharks and rays. While
Published online on 21. March 2012 Identification of factors influencing shark catch and mortality in the Marshall Islands tuna longline fishery and management implications Bromhead, D., Clarke, S., Hoyle, S., Muller, B., Sharples, P. and Harley, S. ABSTRACT: Recent average annual catches of sharks by tuna longline vessels fishing in the Republic of the Marshall
Published online on 22. March 2012 A preliminary survey of whale shark Rhincodon typus catch and trade in China: an emerging crisis Li, W., Wang, Y. and Norman, B. ABSTRACT: This study gives an account of spatial and temporal distribution of whale shark Rhincodon typus catch events in China on the basis of historical records
Published online on 22. March 2012 Life history characteristics of a lightly exploited stock of Squalus suckleyi Tribuzio, C. A. and Kruse, G. H. ABSTRACT: The purpose of this study was to examine the basic life history of a lightly exploited stock of Squalus suckleyi in the Gulf of Alaska to establish a baseline for
Published online on 22. March 2012 Vision in elasmobranchs and their relatives: 21st century advances Lisney, T. J., Theiss, S. M., Collin, S. P. and Hart, N. S. ABSTRACT: This review identifies a number of exciting new developments in the understanding of vision in cartilaginous fishes that have been made since the turn of the
Published online on 20. March 2012 Fisheries, management and conservation of the whale shark Rhincodon typus in Taiwan H. H. Hsu, S. J. Joung, K. M. Liu ABSTRACT: The Taiwanese government introduced a catch-and-report system for the whale shark Rhincodon typus in 2001, and in the following year limited the total allowable catch (TAC) to
Published online on 20. March 2012 Diet and scavenging habits of the smooth skate Dipturus innominatus J. S. Forman and M. R. Dunn ABSTRACT: The diet of smooth skate Dipturus innominatus was determined from examination of stomach contents of 321 specimens of 29·3–152·0 cm pelvic length, sampled from research and commercial trawlers at depths of
Published online on 19. March 2012 Stable isotopes and elasmobranchs: tissue types, methods, applications and assumptions Hussey, N. E., MacNeil, M. A., Olin, J. A., McMeans, B. C., Kinney, M. J., Chapman, D. D. and Fisk, A. T. ABSTRACT: Stable-isotope analysis (SIA) can act as a powerful ecological tracer with which to examine diet, trophic
Published online on 15. March 2012 Biology of the silky shark Carcharhinus falciformis (Carcharhinidae) in the eastern Indian Ocean, including an approach to estimating age when timing of parturition is not well defined Hall, N. G., Bartron, C., White, W. T., Dharmadi and Potter, I. C. ABSTRACT: Biological data were recorded for 1265 silky sharks
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