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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
A case of genetic polyandry in the shortfin mako shark
Published online on 28. July 2015 A case of genetic polyandry in the shortfin mako Isurus oxyrinchus S. Corrigan, D. Kacev, J. Werry ABSTRACT: This article documents a case of genetic polyandry in the oceanic and pelagic shortfin mako Isurus oxyrinchus and briefly comments on the implications of this finding. Journal of Fish Biology. doi:
Thesis: The Reproductive Biology of the Finetooth Shark in the Northwest Atlantic Ocean
Published in May 2015 The Reproductive Biology of the Finetooth Shark, Carcharhinus isodon, in the Northwest Atlantic Ocean Amanda Brown ABSTRACT: Shark fisheries are a multimillion dollar industry in the United States and have significant contributions both recreationally and commercially. In order to maintain this industry, fisheries must be properly managed. An understanding of life
Respiratory mode and gear type are important determinants of elasmobranch immediate and post-release mortality
Published online on 30. July 2015 Respiratory mode and gear type are important determinants of elasmobranch immediate and post-release mortality Derek R Dapp, Terence I Walker, Charlie Huveneers, Richard D Reina ABSTRACT: Estimated declines in shark and ray populations worldwide have raised major, widespread concern about the impacts of global fisheries on elasmobranchs. The mechanisms
Genetic structure of leopard shark populations along the Pacific coast of North America
Published online on 28. July 2015 Genetic structure of leopard shark (Triakis semifasciata) populations along the Pacific coast of North America Amanda M. Barker, Andrew P. Nosal, Eric A. Lewallen, Ronald S. Burton ABSTRACT: Poorly understood genetic structure throughout a species’ range can impede the implementation of effective management strategies. Leopard sharks (Triakis semifasciata) are
Displaying uncertainty in the biological reference points of sharks
Published online on 28. July 2015 Displaying uncertainty in the biological reference points of sharks Matias Braccini, Elizabeth N. Brooks, Brent Wise, Rory McAuley ABSTRACT: Variability in life-history traits influences biological reference points (BRP). For data-poor species such as sharks, BRP have commonly been set at arbitrary values with little consideration of life-history variability. The
The presence of lateral photophores correlates with increased speciation in deep-sea bioluminescent sharks
Published on 29. July 2015 The presence of lateral photophores correlates with increased speciation in deep-sea bioluminescent sharks Julien M. Claes, Dan-Eric Nilsson, Jérôme Mallefet, Nicolas Straube ABSTRACT: The vast majority of species within the lanternshark genus Etmopterus harbour complex luminescent markings on their flanks, whose functional significance has long remained obscure. Recent studies, however,
First data on the age, growth and sexual maturity of the piked spurdog in the Gulf of Gabès
Published online on 29. July 2015 First data on the age, growth and sexual maturity of the piked spurdog, Squalus megalops (Chondrichthyes: Squalidae), in the Gulf of Gabès (central Mediterranean Sea) Sondes Marouani, Hasna Kadri, Mohamed Nejmeddine Bradai ABSTRACT: The occurrence of the piked spurdog (Squalus megalops) in the Gulf of Gabès (Tunisia, central Mediterranean