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Increasing rate of species discovery in sharks coincides with sharp population declines
Accepted on 28. April 2014 Increasing rate of species discovery in sharks coincides with sharp population declines: implications for biodiversity Randhawa, Haseeb; Poulin, Robert; Krkosek, Martin ABSTRACT: The global biodiversity of some taxonomic groups is poorly described, but thought to be decreasing rapidly. Surprisingly, this holds for a group of the world’s most iconic large-bodied
Exercise and Shark Liver Oil Supplementation Reduce Tumor Growth and Cancer Cachexia
Published on 20. March 2014 Exercise and Shark Liver Oil Supplementation Reduce Tumor Growth and Cancer Cachexia in Walker 256 Tumor Bearing Rats Kryczyk M, Bordignon J, Iagher F, Nunes EA, Yamazaki RK, et al. ABSTRACt: This study investigated whether exercise associated to shark liver oil supplementation (1 g/kg b.w./day) affects tumor growth, cachexia, lipid
Age and Growth of the Round Stingray Urotrygon rogersi
Published on 28. April 2014 Age and Growth of the Round Stingray Urotrygon rogersi, a Particularly Fast-Growing and Short-Lived Elasmobranch Paola A. Mejía-Falla, Enric Cortés, Andrés F. Navia, Fernando A. Zapata ABSTRACT: We examined the age and growth of Urotrygon rogersi on the Colombian coast of the Eastern Tropical Pacific Ocean by directly estimating age
A pre-COSEWIC assessment of Porbeagle Shark in Newfoundland and Labrador waters
Canadian Science Advisory Secretariat (CSAS) Research Document 2013/088 Newfoundland and Labrador, Maritimes, and Gulf Regions A pre-COSEWIC assessment of Porbeagle Shark (Lamna nasus) in Newfoundland and Labrador waters M.R. Simpson and C.M. Miri Published in April 2014 ABSTRACT: Reassessment of the Porbeagle Shark (Lamna nasus) has recently been proposed by the Committee on the Status
Demographic analysis of the shortfin mako shark in the Northwest Pacific
Published online on 16. April 2014 Demographic analysis of the shortfin mako shark, Isurus oxyrinchus, in the Northwest Pacific using a two-sex stage-based matrix model Wen-Pei Tsai, Chi-Lu Sun, André E. Punt, Kwang-Ming Liu ABSTRACT: Most demographic models are single sex, and assume both sexes have the same vital rates. However, many species, including the
Evidence of fishing down and illegal shark finning in the Galápagos Islands
Published online on 23. April 2014 The demise of Darwin’s fishes: evidence of fishing down and illegal shark finning in the Galápagos Islands Laurenne Schiller, Juan José Alava, Jack Grove, Günther Reck, Daniel Pauly ABSTRACT: The fauna of the Galápagos Island chain is characterized by high biodiversity and endemism. Thus, the conservation of its terrestrial
Historical records reveal potential extirpation of four hammerhead sharks in Mexican Pacific waters
Published online on 23. April 2014 Historical records reveal potential extirpation of four hammerhead sharks (Sphyrna spp.) in Mexican Pacific waters Juan Carlos Pérez-Jiménez ABSTRACT: Populations of hammerhead sharks (Sphyrna and Eusphyra) have declined in many regions of the world. Six of the eight hammerheads known to date are distributed in the Mexican Pacific: S.
A Palaeozoic shark with osteichthyan-like branchial arches
Published online on 16. April 2014 A Palaeozoic shark with osteichthyan-like branchial arches Alan Pradel, John G. Maisey, Paul Tafforeau, Royal H. Mapes, Jon Mallatt ABSTRACT: The evolution of serially arranged, jointed endoskeletal supports internal to the gills—the visceral branchial arches—represents one of the key events in early jawed vertebrate (gnathostome) history, because it provided
Catch Records of White Sharks in the Northwest Pacific Ocean
Published on 16. April 2014 The Last Frontier: Catch Records of White Sharks (Carcharodon carcharias) in the Northwest Pacific Ocean Heather M. Christiansen, Victor Lin, Sho Tanaka, Anatoly Velikanov, Henry F. Mollet, Sabine P. Wintner, Sonja V. Fordham, Aaron T. Fisk, Nigel E. Hussey ABSTRACT: White sharks are highly migratory apex predators, globally distributed in
Modeling the population dynamics of lemon sharks
Published on 15. April 2014 Modeling the population dynamics of lemon sharks Easton R White, John D Nagy, Samuel H Gruber ABSTRACT: Long-lived marine megavertebrates (e.g. sharks, turtles, mammals, and seabirds) are inherently vulnerable to anthropogenic mortality. Although some mathematical models have been applied successfully to manage these animals, more detailed treatments are often needed
Intraspecific variation in vertical habitat use by tiger sharks in the western North Atlantic
Published online on 12. April 2014 Intraspecific variation in vertical habitat use by tiger sharks (Galeocerdo cuvier) in the western North Atlantic Jeremy J. Vaudo, Bradley M. Wetherbee, Guy Harvey, Richard S. Nemeth, Choy Aming, Neil Burnie, Lucy A. Howey-Jordan, Mahmood S. Shivji ABSTRACT: Tiger sharks (Galeocerdo cuvier) are a wide ranging, potentially keystone predator
Generalized additive models to examine ontogenetic and seasonal distributions of spiny dogfish in Northeast US
Published online on 10. April 2014 Application of generalized additive models to examine ontogenetic and seasonal distributions of spiny dogfish (Squalus acanthias) in the Northeast (US) shelf large marine ecosystem Skyler R. Sagarese, Michael G. Frisk, Robert M. Cerrato, Kathy A. Sosebee, John A. Musick, Paul J. Rago ABSTRACT : Increased commercial importance of spiny
Reform options for the school and gummy shark component of the NSW Ocean Trap and Line Fishery
Published by the NSW Department of Primary Industries Public consultation paper: Reform options for the school and gummy shark component of the NSW Ocean Trap and Line Fishery First published April 2014 PDF – DOWNLOAD –
Visitation and economic impact of whale shark tourism in a Maldivian marine protected area
Published on 10. April 2014 Visitation and economic impact of whale shark tourism in a Maldivian marine protected area Edgar Fernando Cagua, Neal M Collins, James Hancock, Richard Rees ABSTRACT: Whale sharks are a major attraction for tourist divers and snorkelers in South Ari Atoll, Maldives. Yet without information regarding the use and economic extent
Age and growth parameters of shark-like batoids
Published online on 07. April 2014 Age and growth parameters of shark-like batoids J. White, C. A. Simpfendorfer, A. J. Tobin and M. R. Heupel ABSTRACT: Estimates of life-history parameters were made for shark-like batoids of conservation concern Rhynchobatus spp. (Rhynchobatus australiae, Rhynchobatus laevis and Rhynchobatus palpebratus) and Glaucostegus typus using vertebral ageing. The sigmoid