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ICES Journal of Marine Science: Journal du Conseil Advance Access originally published online on January 19, 2009
ICES Journal of Marine Science: Journal du Conseil 2009 66(2):323-333; doi:10.1093/icesjms/fsn220
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Crown Copyright © 2009. Published by Oxford Journals on behalf of the International Council for the Exploration of the Sea. All rights reserved

Lost and abandoned nets in deep-water gillnet fisheries in the Northeast Atlantic: retrieval exercises and outcomes

Philip A. Large1, Norman G. Graham2, Nils-Roar Hareide3, Robert Misund4, Dominic J. Rihan5, Myles C. Mulligan6, Peter J. Randall1, David J. Peach7, Philip H. McMullen8 and Xavier Harlay2

1 Centre for Environment, Fisheries and Aquaculture Science, Pakefield Road, Lowestoft NR33 0HT, UK
2 Marine Institute, Rinville, Oranmore, Co. Galway, Ireland
3 Runde Environment Centre, 6096 Runde, Norway
4 Directorate of Fisheries, Development Section, PO Box 185, Sentrum, 5804 Bergen, Norway
5 Bord Iascaigh Mhara, PO Box 12, Crofton Road, Dun Laoghaire, Co. Dublin, Ireland
6 Bord Iascaigh Mhara, The Auction Hall, Dunmore East, Co. Waterford, Ireland
7 Centre for Environment, Fisheries and Aquaculture Science, The Barn, Boswednan Farm, Tremethick Cross, Penzance, Cornwall TR20 8UA, UK
8 Seafish, St Andrew's Dock, Hull, East Yorkshire, UK

Correspondence to P. A. Large: tel: +44 1502 524491; fax: +44 1502 513865; e-mail: phil.large{at}cefas.co.uk

Large, P. A., Graham, N. G., Hareide, N-R., Misund, R., Rihan, D. J., Mulligan, M. C., Randall, P. J., Peach, D. J., McMullen, P. H., and Harlay, X. 2009. Lost and abandoned nets in deep-water gillnet fisheries in the Northeast Atlantic: retrieval exercises and outcomes. – ICES Journal of Marine Science, 66: 323–333.

The methods used and the results, including estimates of ghost catches present at the time of retrieval, from Irish and UK (England and Wales) gillnet retrieval exercises carried out in deep-water gillnet fisheries west of the British Isles are described. Summaries of the exercises are currently found only in the grey literature, and there is a need to make them more widely available to the scientific community. The fisheries are currently principally for anglerfish (mainly Lophius piscatorius), along with a small bycatch of deep-water sharks [mainly leafscale gulper shark (Centrophorous squamosus) and Portuguese dogfish (Centroscymnus coelolepis)]. The methods used and the results from retrieval exercises in the Norwegian Greenland halibut (Reinhardtius hippoglossus) gillnet fishery are also presented. It is suggested that the efficiency of the Norwegian retrieval gear (which was used in all but one of the retrieval exercises described) be investigated under a range of conditions using an attached underwater camera. The outcomes from this could be used to improve the design of retrieval gear and future gillnet retrieval survey/mitigation exercises. Suggestions are made to improve the format and interpretation of results from future retrieval surveys and to enhance their value to fishery managers and stock assessment scientists. The importance of the continued need for structured gillnet retrieval exercises in deep-water gillnet fisheries is emphasized, and suggestions are made for conducting future studies.

Keywords: deep-water gillnets, ghost fishing, gillnet retrieval, lost gear

Received 4 June 2008; accepted 11 December 2008; advance access publication 19 January 2009.


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