Scientific Papers

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Shark finning in eastern Indonesia

Shark finning in eastern Indonesia

Published online on 11. November 2016 Shark finning in eastern Indonesia: assessing the sustainability of a data-poor fishery Vanessa F. Jaiteh, Adrian R. Hordyk, Matías Braccini, Carol Warren, Neil R. Loneragan ABSTRACT: For over two decades, Indonesia has reported higher average shark landings than any other nation, but very little local information exists on the

A new deepwater legskate from the southeastern Indian Ocean on Broken Ridge

A new deepwater legskate from the southeastern Indian Ocean on Broken Ridge

Published on 10. November 2016 A new deepwater legskate, Sinobatis kotlyari n. sp. (Rajiformes, Anacanthobatidae) from the southeastern Indian Ocean on Broken Ridge Matthias F.W. Stehmann, Simon Weigmann ABSTRACT: Sinobatis kotlyari n. sp. is described, based on the nearly adult 331 mm TL holotype male from 1400 m depth in the southeastern Indian Ocean at

Review of the bamboo shark genus Hemiscyllium

Review of the bamboo shark genus Hemiscyllium

Published on 02. November 2016 Review of the bamboo shark genus Hemiscyllium (Orectolobiformes: Hemiscyllidae) Allen, Gerald R.; Erdmann, Mark V.; White, William T.; Fahmi; Dudgeon, Christine L. ABSTRACT: The bamboo sharks, genus Hemiscyllium, comprises a group of nine species mainly restricted to New Guinea and northern Australia, including islands, reefs, and shoals separated from mainland

Bycatch of chondrichthyans in a coastal trawl fishery on Chubut province coast

Bycatch of chondrichthyans in a coastal trawl fishery on Chubut province coast

Published online on 28. October 2016 Bycatch of chondrichthyans in a coastal trawl fishery on Chubut province coast and adjacent waters, Argentina J. Ruibal Núñez, N. D. Bovcon, P. D. Cochia, M. E. Góngora ABSTRACT: Chondrichthyans are usually caught incidentally in fisheries for species of high commercial value and then discarded on board or landed

Analysis of vertebral chemistry to assess stock structure in a deep-sea shark

Analysis of vertebral chemistry to assess stock structure in a deep-sea shark

First published online on 27. October 2016 Analysis of vertebral chemistry to assess stock structure in a deep-sea shark, Etmopterus spinax Matthew N. McMillan, Christopher Izzo, Claudia Junge, Ole Thomas Albert, Armelle Jung, Bronwyn M. Gillanders ABSTRACT: Deep-sea sharks play a valuable ecological role helping maintain food web balance, yet they are vulnerable to commercial

Relations between morphology, buoyancy and energetics of requiem sharks

Relations between morphology, buoyancy and energetics of requiem sharks

Published on 26. October 2016 Relations between morphology, buoyancy and energetics of requiem sharks Gil Iosilevskii, Yannis P. Papastamatiou ABSTRACT: Sharks have a distinctive shape that remained practically unchanged through hundreds of millions of years of evolution. Nonetheless, there are variations of this shape that vary between and within species. We attempt to explain these

Whale Shark Seasonal Occurrence, Abundance and Demographic Structure in the Mid-Equatorial Atlantic Ocean

Whale Shark Seasonal Occurrence, Abundance and Demographic Structure in the Mid-Equatorial Atlantic Ocean

Published online on 26. October 2016 Whale Shark (Rhincodon typus) Seasonal Occurrence, Abundance and Demographic Structure in the Mid-Equatorial Atlantic Ocean Bruno C. L. Macena, Fábio H. V. Hazin ABSTRACT: Whale sharks are generally associated with environmental factors that drive their movements to specific locations where food availability is high. Consequently, foraging is believed to

Visual resolution and contrast sensitivity in two benthic sharks

Visual resolution and contrast sensitivity in two benthic sharks

Published online on 24. October 2016 Visual resolution and contrast sensitivity in two benthic sharks Laura A. Ryan, Nathan S. Hart, Shaun P. Collin, Jan M. Hemmi ABSTRACT: Sharks have long been described as having ‘poor’ vision. They are cone monochromats and anatomical estimates suggest they have low spatial resolution. However, there are no direct

A novel field method to distinguish between Australian blacktip shark and common blacktip shark

A novel field method to distinguish between Australian blacktip shark and common blacktip shark

Published on 24. October 2016 A novel field method to distinguish between cryptic carcharhinid sharks, Australian blacktip shark Carcharhinus tilstoni and common blacktip shark C. limbatus, despite the presence of hybrids G. J. Johnson, R. C. Buckworth, H. Lee1, J. A. T. Morgan, J. R. Ovenden, C. R. McMahon ABSTRACT: Multivariate and machine-learning methods were

How the dogfish shark scavenges ammonia from its environment

How the dogfish shark scavenges ammonia from its environment

Published online on 19. October 2016 Feeding through your gills and turning a toxicant into a resource: how the dogfish shark scavenges ammonia from its environment Chris M. Wood, Marina Giacomin ABSTRACT: Nitrogen (N) appears to be a limiting dietary resource for elasmobranchs, required not only for protein growth but also for urea-based osmoregulation. Building

Global population genetic dynamics of a highly migratory, apex predator shark

Global population genetic dynamics of a highly migratory, apex predator shark

Published on 18. October 2016 Global population genetic dynamics of a highly migratory, apex predator shark Andrea M. Bernard, Kevin A. Feldheim, Michael R. Heithaus, Sabine P. Wintner, Bradley M. Wetherbee, Mahmood S. Shivji ABSTRACT: Knowledge of genetic connectivity dynamics in the world’s large-bodied, highly migratory, apex predator sharks across their global ranges is limited.

Redescription of the Broadfin Shark from the northeastern Arabian Sea

Redescription of the Broadfin Shark from the northeastern Arabian Sea

Published on 13. October 2016 Redescription of the rare and endangered Broadfin Shark Lamiopsis temminckii (Müller & Henle, 1839) (Carcharhiniformes:Carcharhinidae) from the northeastern Arabian Sea K.V. AKHILESH, W.T. WHITE, K.K. BINEESH, G.B. PURUSHOTTAMA, V.V. SINGH, V.V. SINGH, P.U. ZACHARIA ABSTRACT: The genus Lamiopsis (Carcharhinidae) was previously considered to be monotypic, containing only the Broadfin Shark

Parotid duct injury secondary to shark bite injury

Parotid duct injury secondary to shark bite injury

Published online on 11. October 2016 Parotid duct injury secondary to shark bite injury: Repair with a Crawford stent Mallory Highstein, Tristan Tham, Prabhjyot Singh, Peter Costantino ABSTRACT: Introduction Here we present a unique case of repair of a parotid injury caused by a shark attack. The repair technique is of interest due to the

First North Pacific records of the pointy nosed blue chimaera

First North Pacific records of the pointy nosed blue chimaera

Published on 11. October 2016 First North Pacific records of the pointy nosed blue chimaera, Hydrolagus cf. trolli (Chondrichthyes: Chimaeriformes: Chimaeridae) Amber N. Reichert, Lonny Lundsten, David A. Ebert ABSTRACT: The occurrence of Hydrolagus cf. trolli is reported for the first time from the central and eastern North Pacific Ocean. This is a geographic range

Record of a two-headed embryo of Galeus atlanticus and review of the literature

Record of a two-headed embryo of Galeus atlanticus and review of the literature

Published online on 09. October 2016 Dicephalous v. diprosopus sharks: record of a two-headed embryo of Galeus atlanticus and review of the literature V. Sans-Coma, C. Rodríguez, M. A. López-Unzu, M. Lorenzale, B. Fernández, L. Vida, A. C. Durán ABSTRACT: As far as is known, this paper gives the first description of a two-headed shark

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