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Elasmobranchs of the Persian (Arabian) Gulf ecology, human aspects and research priorities for their improved management
Published on 17. May 2011 Alec B. M. Moore ABSTRACT: Given widespread concern about the status of elasmobranch fishes globally, information on this group in the Persian (Arabian) Gulf is reviewed comprehensively for the first time. The Arabian region may be of overlooked significance to elasmobranch biogeography, and the environmentally unique Gulf has some highly
Characteristics of a manta ray Manta alfredi population off Maui, Hawaii, and implications for management
Published on 16. May 2011 Mark H. Deakos, Jason D. Baker, Lars Bejder ABSTRACT: Late maturity, few offspring and a residential nature are typical characteristics of Manta alfredi that make this species vulnerable to localized anthropogenic threats. Improving its life history information is crucial for successful management. A total of 229 surveys was conducted from
Spatial predictions of blue shark (Prionace glauca) catch rate and catch probability of juveniles in the Southwest Atlantic
Published on 05. May 2011 Carvalho, F. C., Murie, D. J., Hazin, F. H. V., Hazin, H. G., Leite-Mourato, B., and Burgess, G. H. ABSTRACT: Generalized regression analysis and spatial prediction was applied to catch per unit effort (cpue) data for blue shark (Prionace glauca) caught by the Brazilian tuna longline fleet between 1997 and
A new species of Neotropical freshwater stingray of the genus Potamotrygon Garman, 1877 from the Río Madre de Díos, Peru (Chondrichthyes: Potamotrygonidae)
Published on 04. May 2011 João Paulo C.B. da Silva, Marcelo R. de Carvalho ABSTRACT: Potamotrygon tatianae sp. nov., is described from Río Madre de Díos, Peru, upper Rio Madeira basin. The new species is distinguished from all congeners by a unique combination of characters, including its dorsal color pattern formed by a relatively slender,
Potamotrygon tigrina, a new species of freshwater stingray from the upper Amazon basin
Published on 21. April 2011 Marcelo R. de Carvalho, Mark H. Sabaj Perez, Nathan R. Lovejoy ABSTRACT: A new species of Neotropical freshwater stingray, family Potamotrygonidae, is described from the Río Nanay in the upper Río Amazonas basin of Peru. Potamotrygon tigrina, n. sp., is easily distinguished from all congeners by its conspicuous dorsal disc
Sharks of British Columbia
Published by Fisheries and Oceans Canada, 2011. Sharks of British Columbia Fisheries and Oceans Canada (DFO) is committed to developing the highest standard of bycatch data, and to the conservation of shark species in British Columbia waters. The information in this guide is designed to assist DFO to monitor bycatch, and fish harvesters to correctly
An unusual, dwarf new species of Neotropical freshwater stingray
Published on 20. April 2011 An unusual, dwarf new species of Neotropical freshwater stingray, Plesiotrygon nana sp. nov., from the upper and mid Amazon basin: the second species of Plesiotrygon (Chondrichthyes: Potamotrygonidae) Marcelo R. de Carvalho, Maíra P. Ragno ABSTRACT: A new species of the relatively poorly known Neotropical freshwater stingray genus Plesiotrygon Rosa, Castello
Noteworthy elasmobranch records from Oman
Short Communication published in April 2011 AC Henderson and AJ Reeve ABSTRACT: Records of 11 elasmobranch species previously unreported from, or uncommon in, Omani waters are presented. Records new to Oman include Carcharhinus altimus, C. leiodon, Centrophorus isodon, Ctenacis fehlmanni, Himantura fai, Mobula eregoodootenke and Sphyrna zygaena, whereas noteworthy records of uncommon species include Himantura
Gear selectivity of large-mesh nets and drumlines used to catch sharks in the Queensland Shark Control Program
Published in April 2011 WD Sumpton, SM Taylor, NA Gribble, G. McPherson, T. Ham ABSTRACT: Catches of sharks and bycatch in large-mesh nets and baited drumlines used by the Queensland Shark Control Program were examined to determine the efficacy of both gear types and assess fishing strategies that minimise their impacts. There were few significant
Bycatch of high sea longline fisheries and measures taken by Taiwan: Actions and challenges
Published online on 17 March 2011. Hsiang-Wen Huang ABSTRACT: Taiwan is a major longline fishing nation with an interest in proactive conservation measures. Facing global concerns about the incidental catch in longline fisheries, Taiwan has focused on bycatch issues since the 2000s. This paper reviews the existing information on bycatch and the actions taken by
Evaluating post-release behaviour modification in large pelagic fish deployed with pop-up satellite archival tags
Advance access publication on 15 March 2011. John P. Hoolihan, Jiangang Luo, Francisco J. Abascal, Steven E. Campana, Gregorio De Metrio, Heidi Dewar, Michael L. Domeier, Lucy A. Howey, Molly E. Lutcavage , Michael K. Musyl, John D. Neilson, Eric S. Orbesen, Eric D. Prince, and Jay R. Rooker ABSTRACT: Post-release behaviour modification, possibly a
Reproductive biology and embryonic development of Squalus blainvillei in the eastern Mediterranean Sea
Published online on 08 March 2011. Vasiliki Kousteni and Persefoni Megalofonou. ABSTRACT: A total number of 526 Squalus blainvillei was sampled from the bottom trawl and bottom longline catches in the eastern Mediterranean Sea from December 2004 to December 2009. Females outnumbered males and the overall sex ratio was 1.26:1. Females ranged from 182 to
Tropical Eastern Pacific Records of the Prickly Shark, Echinorhinus cookei (Chondrichthyes: Echinorhinidae)
Published on 06. March 2011 Early view paper : Douglas J. Long, John E. McCosker, Shmulik Blum, Avi Klapfer. ABSTRACT: Most records of the prickly shark, Echinorhinus cookei Pietschmann, 1928 are from temperate and subtropical areas of the Pacific Rim, with few records from the tropics. This seemingly disjunct distribution led some authors to consider
Rediscovery and description of the quagga shark, Halaelurus quagga (Alcock, 1899) (Chondrichthyes: Scyliorhinidae) from the southwest coast of India
Published on 02. March 2011 K.V. Akhilesh, K.K. Bineesh, C.P.R. Shanis, B.A. Human, U. Ganga ABSTRACT: The Quagga shark Halaelurus quagga (Alcock, 1899) is one of the poorest known scyliorhinid (Carcharhiniformes) sharks of the world, described from a single specimen collected from the Arabian Sea coast of India (off Malabar). Since its description, the only
Long-term individual identification and site fidelity of white sharks, Carcharodon carcharias, off California using dorsal fins
Published on 1 March 2011 Scot D. Anderson, Taylor K. Chapple, Salvador J. Jorgensen, A. Peter Klimley, Barbara A. Block ABSTRACT: Mark-recapture techniques can be used to estimate white shark (Carcharodon carcharias) population abundance. These frameworks are based on assumptions that marks are conserved and animals are present at the sampling location over the entire