Scientific Papers

Exercise and Shark Liver Oil Supplementation Reduce Tumor Growth and Cancer Cachexia

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

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

Demographic analysis of the shortfin mako shark in the Northwest Pacific

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

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

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

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

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

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

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

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

Visitation and economic impact of whale shark tourism in a Maldivian marine protected area

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

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

Runx Family Genes in a Cartilaginous Fish, the Elephant Shark

Runx Family Genes in a Cartilaginous Fish, the Elephant Shark

Published on 03. April 2014 Runx Family Genes in a Cartilaginous Fish, the Elephant Shark (Callorhinchus milii) Giselle Sek Suan Nah, Zhi Wei Lim, Boon-Hui Tay, Motomi Osato, Byrappa Venkatesh ABSTRACT: The Runx family genes encode transcription factors that play key roles in hematopoiesis, skeletogenesis and neurogenesis and are often implicated in diseases. We describe

Mortality rate of silky sharks caught in the tropical tuna purse seine fishery in the Indian Ocean

Mortality rate of silky sharks caught in the tropical tuna purse seine fishery in the Indian Ocean

Published online on 27. March 2014 Mortality rate of silky sharks (Carcharhinus falciformis) caught in the tropical tuna purse seine fishery in the Indian Ocean François Poisson, John-David Filmalter, Anne-Lise Vernet, Dagorn Laurent ABSTRACT: Scientists on-board French purse seine vessels recorded the number and condition of silky sharks caught during three fishing cruises in the

Distribution and morphometric characters of the Mediterranean brown ray in the Gulf of Gabes

Distribution and morphometric characters of the Mediterranean brown ray in the Gulf of Gabes

Published online on 30. March 2014 Distribution and morphometric characters of the Mediterranean brown ray, Raja miraletus (Chondrichthyes: Rajidae) in the Gulf of Gabes (Tunisia, Central Mediterranean) Hasna Kadri, Sondes Marouani, Mohamed Nejmeddine Bradai, Abderrahmen Bouaïn, Eric Morize ABSTRACT: To determine some morphometric characters of the Mediterranean brown ray Raja miraletus Linnaeus, 1758 in the