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New Molecular Tools for the Identification of 2 Endangered Smooth-Hound Sharks
Published on 25. November 2014 New Molecular Tools for the Identification of 2 Endangered Smooth-Hound Sharks, Mustelus mustelus and Mustelus punctulatus Ilaria A. M. Marino, Emilio Riginella, Alessia Cariani, Fausto Tinti, Edward D. Farrell, Carlotta Mazzoldi, Lorenzo Zane ABSTRACT: The smooth-hounds represent a significant proportion of the elasmobranch catch in the Adriatic basin of the
Long-term body pigmentation changes on a manta ray
Published on 24. November 2014 Long-term body pigmentation changes on a manta ray (Mobulidae) Csilla Ari ABSTRACT: Manta rays (genus Manta) are listed as vulnerable on the IUCN Red List based partly on population studies that use body coloration and ventral spot patterns to identify and count individuals, as a result of such patterns being
Arctic skate preys on remarkably large glacial eelpouts
Published on 21. November 2014 Arctic skate Amblyraja hyperborea preys on remarkably large glacial eelpouts Lycodes frigidus I. Byrkjedal, J. S. Christiansen, O. V. Karamushko, G. Langhelle, A. Lynghammar ABSTRACT: During scientific surveys on the continental slopes north-west of Spitsbergen and off north-east Greenland (c. 600 and 1000 m depths), two female Arctic skates Amblyraja hyperborea
Residency patterns and movements of grey reef sharks in semi-isolated coral reef habitats
Published on 16. November 2014 Residency patterns and movements of grey reef sharks (Carcharhinus amblyrhynchos) in semi-isolated coral reef habitats Mario Espinoza, Michelle. R. Heupel, Andrew J. Tobin, Colin A. Simpfendorfer ABSTRACT: The degree of reef isolation may limit the frequency of long-range dispersals in reef-associated sharks. Therefore, understanding how the behaviour and spatial ecology
Ontogenetic migration of a female scalloped hammerhead shark in the Gulf of California
Published on 26. November 2014 Ontogenetic migration of a female scalloped hammerhead shark Sphyrna lewini in the Gulf of California E Mauricio Hoyos-Padilla, James T Ketchum, A Peter Klimley, Felipe Galván-Magaña ABSTRACT: Background Little information exists on the vertical and horizontal movements of juvenile scalloped hammerhead sharks (Sphyrna lewini). Measurements of the sizes of juveniles
Assessing the potential biases of ignoring sexual dimorphism and mating mechanism in using a single-sex demographic model: the mako shark
Published on 21. November 2014 Assessing the potential biases of ignoring sexual dimorphism and mating mechanism in using a single-sex demographic model: the shortfin mako shark as a case study Wen-Pei Tsai, Kwang-Ming Liu, André E. Punt, Chi-Lu Sun ABSTRACT: Most demographic models explicitly track the dynamics of a single sex. However, single-sex models may
Mitogenomics of the Speartooth Shark challenges ten years of control region sequencing
Published on 19. November 2014 Mitogenomics of the Speartooth Shark challenges ten years of control region sequencing Pierre Feutry, Peter M Kyne, Richard D Pillans, Xiao Chen, Gavin JP Naylor, Peter M Grewe ABSTRACT (provisional) : BackgroundMitochondrial DNA markers have long been used to identify population boundaries and are now a standard tool in conservation
First photographic records of the giant manta ray off eastern Australia
Published on 31. October 2014 First photographic records of the giant manta ray Manta birostris off eastern Australia Lydie I. E. Couturier, Fabrice R. A. Jaine, Tom Kashiwagi ABSTRACT: We present the first photographic evidence of the presence of the giant manta ray Manta birostris in east Australian waters. Two individuals were photographed off Montague
Stock assessment of sharks in the northern part (Iranian waters) of the Persian Gulf
Published online on 30. October 2014 Stock assessment of sharks in the northern part (Iranian waters) of the Persian Gulf Nassir Niamaimandi, Toraj Valinassab, Gholam-Abbas Zarshenas ABSTRACT: This study was analyzed the annual catch and trawl survey data of sharks in the northern part of the Persian Gulf (26˚30΄ to 30˚00΄N and 49˚00΄ to 56˚00΄E)
Species diversity of the deep-water gulper sharks in North Atlantic waters
Published online on 12. November 2014 Species diversity of the deep-water gulper sharks (Squaliformes: Centrophoridae: Centrophorus) in North Atlantic waters – current status and taxonomic issues Ana Veríssimo, Charles F. Cotton, Robert H. Buch, Javier Guallart, George H. Burgess ABSTRACT: The gulper sharks (genus Centrophorus) are a group of deep-water benthopelagic sharks with a worldwide
Who let the dogfish out? A review of management and socio-economic aspects of spiny dogfish fisheries
Published online on 18. November 2014 Who let the dogfish out? A review of management and socio-economic aspects of spiny dogfish fisheries Andrea Dell’Apa, Charles W. Bangley, Roger A. Rulifson ABSTRACT: Multi-scaled integrated analysis across biological, economic, social, and political aspects of fisheries is needed to provide effective management strategies. These aspects are naturally conflicting
Bathymetric limits of chondrichthyans in the deep sea
Published online on 29. October 2014 Bathymetric limits of chondrichthyans in the deep sea: A re-evaluation J.A. Musick, C.F. Cotton ABSTRACT: Chondrichthyans are largely absent in abyssal (>3000 m) habitats in most regions of the world ocean and are uncommon below 2000 m. The deeper-living chondrichthyans include certain rajids, squaliforms and holocephalans. Several hypotheses have been erected
Apristurus breviventralis, a new species of deep-water catshark from the Gulf of Aden
Published on 03. November 2014 Apristurus breviventralis, a new species of deep-water catshark (Chondrichthyes: Carcharhiniformes: Scyliorhinidae) from the Gulf of Aden Junro Kawauchi, Simon Weigmann, Kazuhiro Nakaya ABSTRACT: A new deep-water catshark of the genus Apristurus Garman, 1913 is described based on nine specimens from the Gulf of Aden in the northwestern Indian Ocean. Apristurus
Preservation Effects on Stable Isotope Values of Archived Elasmobranch Fin Tissue
Published online on 21. October 2014 Preservation Effects on Stable Isotope Values of Archived Elasmobranch Fin Tissue: Comparisons between Frozen and Ethanol-Stored Samples Jill A. Olin, Gregg R. Poulakis, Philip W. Stevens, Jacquelyn A. DeAngelo, Aaron T. Fisk ABSTRACT: Elasmobranch fin tissue has been sampled and archived for decades to support genetics research. However, these
Distribution and community structure of coastal sharks in the northeastern Gulf of Mexico
Published online on 29. October 2014 Distribution and community structure of coastal sharks in the northeastern Gulf of Mexico Dana M. Bethea, Matthew J. Ajemian, John K. Carlson, Eric R. Hoffmayer, Johanna L. Imhoff, R. Dean Grubbs, Cheston T. Peterson, George H. Burgess ABSTRACT: Coastal shark abundance and community structure was quantified across 10 geographic