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Shark interactions in pelagic longline fisheries

Citation

Gilman, Eric and Clarke, S and Brothers, N and Alfaro-Shigueto, J and Mandelman, J and Mangel, J and Petersen, S and Piovano, S and Thomson, N and Dalzell, P and Donoso, M and Goren, M and Werner, T, Shark interactions in pelagic longline fisheries, Marine Policy, 32, (1) pp. 1-18. ISSN 0308-597X (2008) [Refereed Article]

DOI: doi:10.1016/j.marpol.2007.05.001

Abstract

Substantial ecological, economic and social problems result from shark interactions in pelagic longline fisheries. Improved understanding of industry attitudes and practices towards shark interactions assists with managing these problems. Information on fisher knowledge and new strategies for shark avoidance may benefit sharks and fishers. A study of 12 pelagic longline fisheries from eight countries shows that incentives to avoid sharks vary along a continuum, based on whether sharks represent an economic disadvantage or advantage. Shark avoidance practices are limited, including avoiding certain areas, moving when shark interaction rates are high, using fish instead of squid for bait and deeper setting. Some conventionally employed fishing gear and methods used to target non-shark species contribute to shark avoidance. Shark repellents hold promise; more research and development is needed. Development of specifically designed equipment to discard sharks could improve shark post release survival prospects, reduce gear loss and improve crew safety. With expanding exploitation of sharks for fins and meat, improved data collection, monitoring and precautionary shark management measures are needed to ensure that shark fishing mortality levels are sustainable.

Item Details

Item Type:Refereed Article
Keywords:Bycatch; Depredation; Finning; Fishery; Pelagic longline; Shark
Research Division:Environmental Sciences
Research Group:Environmental Science and Management
Research Field:Wildlife and Habitat Management
Objective Division:Environment
Objective Group:Flora, Fauna and Biodiversity
Objective Field:Marine Flora, Fauna and Biodiversity
Author:Gilman, Eric (Mr Eric Gilman)
ID Code:55344
Year Published:2008
Web of Science® Times Cited:89
Deposited By:Geography and Environmental Studies
Deposited On:2009-03-09
Last Modified:2009-03-19
Downloads:0

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