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Connectivity in grey reef sharks determined using empirical and simulated genetic data
Published online on 28. August 2015 Connectivity in grey reef sharks (Carcharhinus amblyrhynchos) determined using empirical and simulated genetic data Paolo Momigliano, Robert Harcourt, William D. Robbins, Adam Stow ABSTRACT: Grey reef sharks (Carcharhinus amblyrhynchos) can be one of the numerically dominant high order predators on pristine coral reefs, yet their numbers have declined even
Hooks equipped with magnets can increase catches of blue shark by longline fishery
Published online on 24. August 2015 Hooks equipped with magnets can increase catches of blue shark (Prionace glauca) by longline fishery Sebastián Biton Porsmoguer, Daniela Bănaru, Charles F. Boudouresque, Ivan Dekeyser, Christophe Almarcha ABSTRACT: Blue shark (Prionace glauca) populations are decreasing worldwide and the species is currently classified as near threatened. However, it is the
Angular roughshark in captivity feeding exclusively on elasmobranch eggs: an overlooked feeding niche or a matter of individual taste?
Published online on 17. August 2015 Angular roughshark Oxynotus centrina (Squaliformes: Oxynotidae) in captivity feeding exclusively on elasmobranch eggs: an overlooked feeding niche or a matter of individual taste? J. Guallart, P. García-Salinas, A. E. Ahuir-Baraja, M. Guimerans, J. R. Ellis, M. Roche ABSTRACT: A specimen of angular roughshark Oxynotus centrina has been kept successfully
A shift in anterior–posterior positional information underlies the fin-to-limb evolution
Published on 18. August 2015 A shift in anterior–posterior positional information underlies the fin-to-limb evolution Koh Onimaru, Shigehiro Kuraku, Wataru Takagi, Susumu Hyodo, James Sharpe, Mikiko Tanaka ABSTRACT: The pectoral fins of ancestral fishes had multiple proximal elements connected to their pectoral girdles. During the fin-to-limb transition, anterior proximal elements were lost and only the
Age and growth of the tiger shark off the east coast of Australia
Published online on 06. August 2015 Age and growth of the tiger shark Galeocerdo cuvier off the east coast of Australia B. J. Holmes, V. M. Peddemors, A. N. Gutteridge, P. T. Geraghty, R. W. K. Chan, I. R. Tibbetts, M. B. Bennett ABSTRACT: Total lengths (LT) at age and growth rates for south-west Pacific
Differential gene flow patterns for two commercially exploited shark species along the south–west coast of South Africa
Published online on 04. August 2015 Differential gene flow patterns for two commercially exploited shark species, tope (Galeorhinus galeus) and common smoothhound (Mustelus mustelus) along the south–west coast of South Africa Daphne N. Bitalo, Simo N. Maduna, Charlene da Silva, Rouvay Roodt-Wilding, Aletta E. Bester-van der Merwe ABSTRACT: South Africa’s demersal sharks are threatened by
DNA evidence of the consumption of short-beaked common dolphin by the shortfin mako shark
Published online on 21.July 2015 DNA evidence of the consumption of short-beaked common dolphin Delphinus delphis by the shortfin mako shark Isurus oxyrinchus Sebastián Biton Porsmoguer, Daniela Banaru, Charles F. Boudouresque, Ivan Dekeyser, Amélia Viricel, Manuel Merchán ABSTRACT: Stomachs of shortfin mako sharks Isurus oxyrinchus caught in the northeastern Atlantic by Iberian longliners were analyzed.
The small-scale shark fisheries in the southern Gulf of Mexico
Published online on 25. July 2015 The small-scale shark fisheries in the southern Gulf of Mexico: Understanding their heterogeneity to improve their management Juan Carlos Pérez-Jiménez, Iván Mendez-Loeza ABSTRACT: Fisheries targeting sharks in the southern Gulf of Mexico are generally restricted to a few months or fish in several months but participate in other fisheries.
Predictive habitat suitability models to aid conservation of elasmobranch diversity in the central Mediterranean Sea
Published online on 14. August 2015 Predictive habitat suitability models to aid conservation of elasmobranch diversity in the central Mediterranean Sea V. Lauria, M. Gristina, M. J. Attrill, F. Fiorentino, G. Garofalo ABSTRACT: Commercial fisheries have dramatically impacted elasmobranch populations worldwide. With high capture and bycatch rates, the abundance of many species is rapidly declining
Dramatic increase in sea otter mortality from white sharks in California
Published online on 14. August 2015 Dramatic increase in sea otter mortality from white sharks in California M. Tim Tinker, Brian B. Hatfield, Michael D. Harris, Jack A. Ames ABSTRACT: Although southern sea otters (Enhydra lutris nereis) are not considered prey for white sharks (Carcharodon carcharias), sharks do nonetheless bite sea otters. We analyzed spatial
Multiple paternity and hybridization in two smooth-hound sharks
Published on 10. August 2015 Multiple paternity and hybridization in two smooth-hound sharks Ilaria A. M. Marino, Emilio Riginella, Michele Gristina, Maria B. Rasotto, Lorenzo Zane, Carlotta Mazzoldi ABSTRACT: Multiple paternity appears to be a common trait of elasmobranch mating systems, with its occurrence likely driven by convenience, due to females seeking to minimize the
A histology-based study in apparently healthy wild freshwater stingrays
Published on 06. August 2015 A histology-based study in apparently healthy wild freshwater stingrays Potamotrygon motoro Julieta Engrácia de Moraes, Jefferson Yunis Aguinaga, Pedro de Oliveira Viadanna, Flávio Ruas de Moraes ABSTRACT: Histopathological studies are important as a reference in pathological process. There are a few of these studies in elasmobranchs. The aim of this
Tonic immobility as an anaesthetic for elasmobranchs during surgical implantation procedures
Published online on 17. June 2015 Tonic immobility as an anaesthetic for elasmobranchs during surgical implantation procedures Steven T. Kessel, Nigel E. Hussey ABSTRACT: Tonic immobility is a widely used technique for the surgical implantation of acoustic tags in elasmobranchs (sharks, skates, and rays), yet it is still not broadly recognised as an acceptable procedure
Genetic analysis of stock structure of blue shark in the north Pacific ocean
Published online on 31. July 2015 Genetic analysis of stock structure of blue shark (Prionace glauca) in the north Pacific ocean J.R. King, M. Wetklo, J. Supernault, M. Taguchi, K. Yokawa, O. Sosa-Nishizaki, R.E. Withler ABSTRACT: The blue shark (Prionace glauca) is globally distributed, occupying the pelagic, open ocean in temperate and tropical waters. It
Reproductive biology of the Alaska skate, with comments on an intersexual individual
Published online on 29. July 2015 Reproductive biology of the Alaska skate Bathyraja parmifera, with comments on an intersexual individual M. E. Matta ABSTRACT: A total of 1357 specimens of Alaska skate Bathyraja parmifera were collected in the eastern Bering Sea by fisheries observers and during scientific groundfish surveys from 2003 to 2005. Male and