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In situ observations of a possible skate nursery off the western Antarctic Peninsula
Published online on 20 April 2015 In situ observations of a possible skate nursery off the western Antarctic Peninsula M. O. Amsler, K. E. Smith, J. B. McClintock, H. Singh, S. Thatje, S. C. Vos, C. J. Brothers, A. Brown, D. Ellis, J. Anderson, R. B. Aronson ABSTRACT: A dense aggregation of skate egg cases
Targeted shark fisheries, DNA barcoding and regulating shark fin trade in Indonesia
Published online on 11. April 2015 Targeted shark fisheries, DNA barcoding and regulating shark fin trade in Indonesia Vincent Nijman ABSTRACT: It is challenging to identify shark fins to the individual species level given that sharks are mostly ‘definned’ at sea, removing the fins and discarding the bodies, with the dried fins being sold to
Osmoregulation by juvenile brown-banded bamboo sharks in hypo- and hyper-saline waters
Published online on 11. April 2015 Osmoregulation by juvenile brown-banded bamboo sharks, Chiloscyllium punctatum, in hypo- and hyper-saline waters R.L. Cramp, M.J. Hansen, C.E. Franklin ABSTRACT: While there is a considerable body of work describing osmoregulation by elasmobranchs in brackish and saltwater, far fewer studies have investigated osmoregulation in hypersaline waters. We examined osmo- and
Using biological variables and reproductive strategy of the undulate ray to evaluate productivity and susceptibility to exploitation
Published online on 23. March 2015 Using biological variables and reproductive strategy of the undulate ray Raja undulata to evaluate productivity and susceptibility to exploitation B. Serra-Pereira, K. Erzini, I. Figueiredo ABSTRACT: The present work provides a detailed analysis of the reproductive strategy of the undulate ray Raja undulata in Portuguese mainland waters. The species
Variation in carcass and fin-weight ratios for sharks captured on demersal set-lines off eastern Australia
Published online on 13. March 2015 Variation in whole-, landed- and trimmed-carcass and fin-weight ratios for various sharks captured on demersal set-lines off eastern Australia Naomi Pleizier, Lee F.G. Gutowsky, Victor M. Peddemors, Steven J. Cooke, Paul A. Butcher ABSTRACT: Sharks are important apex predators in marine systems but many populations have experienced large declines,
Demographic history and the South Pacific dispersal barrier for school shark
Published online on 10. March 2015 Demographic history and the South Pacific dispersal barrier for school shark (Galeorhinus galeus) inferred by mitochondrial DNA and microsatellite DNA mark Sebastián Hernández, Ross Daley, Terry Walker, Matias Braccini, Andrea Varela, Malcolm P. Francis, Peter A. Ritchie ABSTRACT: We used mitochondrial DNA (mtDNA) control region (CR) sequences and genotypes
First record of Mollisquama sp. from the Gulf of Mexico, with a morphological comparison to Mollisquama parini Dolganov
Published on 22. April 2015 First record of Mollisquama sp. (Chondrichthyes: Squaliformes: Dalatiidae) from the Gulf of Mexico, with a morphological comparison to the holotype description of Mollisquama parini Dolganov Mark A. Grace, Michael H. Doosey, Henry L. Bart, Gavin J. P. Naylor ABSTRACT: The description of the pocket shark genus Mollisquama (M. parini Dolganov,
Molecular development of chondrichthyan claspers and the evolution of copulatory organs
Published on 14. April 2015 Molecular development of chondrichthyan claspers and the evolution of copulatory organs Katherine L. O’Shaughnessy, Randall D. Dahn, Martin J. Cohn ABSTRACT: The earliest known vertebrate copulatory organs are claspers, paired penis-like structures that are associated with evolution of internal fertilization and viviparity in Devonian placoderms. Today, only male chondrichthyans possess
Molecular and Morphological Analyses Reveal Phylogenetic Relationships of Stingrays Focusing on Dasyatidae
Published on 13. April 2015 Molecular and Morphological Analyses Reveal Phylogenetic Relationships of Stingrays Focusing on the Family Dasyatidae (Myliobatiformes) Kean Chong Lim, Phaik-Eem Lim, Ving Ching Chong, Kar-Hoe Loh ABSTRACT: Elucidating the phylogenetic relationships of the current but problematic Dasyatidae (Order Myliobatiformes) was the first priority of the current study. Here, we studied three
Assessing the viability of releasing captive-bred wobbegongs to restock depleted populations
Published on 09. April 2015 Born to be free? Assessing the viability of releasing captive-bred wobbegongs to restock depleted populations Kathryn A. Lee, Charlie Huveneers, Victor Peddemors, Andrew Boomer, Robert G. Harcourt ABSTRACT: Large predatory fishes, such as sharks, play an important functional role within marine ecosystems. Restocking of depleted populations has been extensively studied
Reconstructing habitat use by juvenile salmon sharks links upwelling to strandings in the California Current
Published on 09. April 2015 Reconstructing habitat use by juvenile salmon sharks links upwelling to strandings in the California Current Aaron B. Carlisle, Steven Y. Litvin, Elliott L. Hazen, Daniel J. Madigan, Kenneth J. Goldman, Robert N. Lea, Barbara A. Block ABSTRACT: The use of nursery areas by elasmobranchs is an important life history strategy
Ecological Drivers of Shark Distributions along a Tropical Coastline
Published on 08. April 2015 Ecological Drivers of Shark Distributions along a Tropical Coastline Peter M. Yates, Michelle R. Heupel, Andrew J. Tobin, Colin A. Simpfendorfer ABSTRACT: As coastal species experience increasing anthropogenic pressures there is a growing need to characterise the ecological drivers of their abundance and habitat use, and understand how they may
Development and microstructure of tooth histotypes in the blue shark and the great white shark
Published on 03. April 2015 Development and microstructure of tooth histotypes in the blue shark, Prionace glauca (Carcharhiniformes: Carcharhinidae) and the great white shark, Carcharodon carcharias (Lamniformes: Lamnidae) Joshua K. Moyer, Mark L. Riccio, William E. Bemis ABSTRACT: Elasmobranchs exhibit two distinct arrangements of mineralized tissues in the teeth that are known as orthodont and
Effect of the Deep Sea Shark-liver Oil Component Food on Secretion Type Immunoglobulin A Density of Saliva in the Normal Man and Woman Adult
Published on 10. April 2015 Effect of the Deep Sea Shark-liver Oil Component Food on Secretion Type Immunoglobulin A Density of Saliva in the Normal Man and Woman Adult Naobumi Hamadate, Yoshiyuki Matsumoto, Mami Shikura, Chiemi Mizukami, Kayoko Seto, Tetsuro Yamamoto, Hideyo Yamaguchi, Muneaki Iizuka, Etsushi Yamamoto, Sumio Kondo, Kazunaga Yazawa ABSTRACT: Secretory immunoglobulin A
Laser photogrammetry improves size and demographic estimates for whale sharks
Published on 07. April 2015 Laser photogrammetry improves size and demographic estimates for whale sharks Christoph A. Rohner, Anthony J. Richardson, Clare E.M. Prebble, Andrea D. Marshall, Michael B. Bennett, Scarla J.Weeks, Geremy Cliff, Sabine P.Wintner, Simon J. Pierce ABSTRACT: Whale sharks Rhincodon typus are globally threatened, but a lack of biological and demographic information