Skip Navigation


ICES Journal of Marine Science: Journal du Conseil Advance Access originally published online on August 17, 2007
ICES Journal of Marine Science: Journal du Conseil 2007 64(8):1503-1511; doi:10.1093/icesjms/fsm106
This Article
Right arrow Full Text Freely available
Right arrow FREE Full Text (PDF) Freely available
Right arrow All Versions of this Article:
64/8/1503    most recent
fsm106v1
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrowRequest Permissions
Google Scholar
Right arrow Articles by Reid, D. G.
Right arrow Articles by Turrell, W. R.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Reid, D. G.
Right arrow Articles by Turrell, W. R.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

Published by Oxford University Press 2007. For Permissions, please email: journals.permissions@oxfordjournals.org

Anglerfish catchability for swept-area abundance estimates in a new survey trawl

D. G. Reid1,, V. J. Allen2, D. J. Bova1, E. G. Jones1, R. J. Kynoch1, K. J. Peach1, P. G. Fernandes1 and W. R. Turrell1

1 Fisheries Research Services Marine Laboratory, PO Box 101, 375 Victoria Road, Torry, Aberdeen AB11 9DB, UK
2 Department of Geography, Kings College, University of London, The Strand, London WC2R 2LS, UK

Correspondence to D. G. Reid: tel: +44 1224 876544; fax: +44 1224 295511; e-mail: reiddg{at}marlab.ac.uk

Reid, D. G., Allen, V. J., Bova, D. J., Jones, E. G., Kynoch, R. J., Peach, K. J., Fernandes, P. G., and Turrell, W. R. 2007. Anglerfish catchability for swept-area abundance estimates in a new survey trawl. – ICES Journal of Marine Science, 64: 1503–1511.

In 2005, a new trawl survey was launched in Scotland to estimate anglerfish (Lophius spp.) abundance using swept-area estimates. This required an understanding of the herding of the fish by the gear, particularly in the zone between the doors and wing ends. TV observations at the wing ends and along the sweeps were used to quantify the behavioural reactions of anglerfish. These observations were analysed to develop a gear efficiency estimate. This paper details the construction of the net and the procedures for data collection on the survey. In all, 54 reliable observations of anglerfish were recorded at the groundgear, the wing ends, and along the sweep/bridle combination. Detailed analysis of the recordings showed that all fish in the path of the net were captured, whereas more than half of the fish between the wings and the doors were not. The fish did not appear to herd and many of the encounters with the wires were passive. An individual-based particle-tracking model was constructed to use the behavioural observations to simulate the capture process and generate an efficiency factor. The calculated efficiency factor, based on the behavioural observations, was 1.04, indicating that almost all fish encountering the sweeps and bridles were lost. The implications and suggestions for development of this work are discussed.

Keywords: anglerfish, catchability, survey trawl

Received 31 August 2006; accepted 7 June 2007; advance access publication 17 August 2007.


Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?




Disclaimer: Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.