ESR 13:111-116 (2011)  -  doi:10.3354/esr00332

NOTE
Range extension of the Endangered great hammerhead shark Sphyrna mokarran in the Northwest Atlantic: preliminary data and significance for conservation

Neil Hammerschlag1,2,3,*, Austin J. Gallagher2,3, Dominique M. Lazarre1,3, Curt Slonim3,4 

1Rosenstiel School of Marine and Atmospheric Science, University of Miami, 4600 Rickenbacker Causeway, Miami, Florida 33149, USA
2Leonard and Jayne Abess Center for Ecosystem Science and Policy, University of Miami, PO Box 248203, Coral Gables, Florida 33124, USA
3RJ Dunlap Marine Conservation Program, University of Miami, 4600 Rickenbacker Causeway, Miami, Florida 33149, USA
4Curt-A-Sea Fishing Charters, 117 El Capitan Drive, Islamorada, Florida 33036, USA

ABSTRACT: We provide pilot data from a satellite-tracked great hammerhead shark Sphyrna mokarran in the Atlantic, representing the first such data on this species in the literature. The 250 cm shark was tagged off the coast of the middle-Florida Keys (USA) and transmitted for 62 d. During this time it migrated a minimum distance of ~1200 km northeast from the coast of Florida, into pelagic international waters of the Northwest Atlantic. When compared to the primary literature, this migration represented a northeasterly range extension for this species off the continental slope in the Atlantic. The significance of this range extension is discussed in terms of the vulnerability of S. mokarran to target and non-target fisheries.


KEY WORDS: Predator · Satellite tag · Argos · Shark · Habitat use · Elasmobranch


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Cite this article as: Hammerschlag N, Gallagher AJ, Lazarre DM, Slonim C (2011) Range extension of the Endangered great hammerhead shark Sphyrna mokarran in the Northwest Atlantic: preliminary data and significance for conservation. Endang Species Res 13:111-116

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