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ICES Journal of Marine Science: Journal du Conseil Advance Access originally published online on August 18, 2008
ICES Journal of Marine Science: Journal du Conseil 2008 65(7):1316-1325; doi:10.1093/icesjms/fsn130
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© 2008 International Council for the Exploration of the Sea. Published by Oxford Journals. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

Distribution, abundance, and growth of anglerfish (Lophius piscatorius) on the Porcupine Bank (west of Ireland)

Francisco Velasco, Jorge Landa, Joaquín Barrado and Marian Blanco

Instituto Español de Oceanografía, Promontorio de San Martín s/n 39080, Santander, Spain

Correspondence to F. Velasco: tel: +34 942 291060; fax: +34 942 275072; e-mail: francisco.velasco{at}st.ieo.es

Velasco, F., Landa, J., Barrado, J., and Blanco, M. 2008. Distribution, abundance, and growth of anglerfish (Lophius piscatorius) on the Porcupine Bank (west of Ireland). – ICES Journal of Marine Science, 65: 1316–1325.

This manuscript presents the first results on abundance and distribution of white anglerfish (Lophius piscatorius) from a series of groundfish surveys carried out on the Porcupine Bank. White anglerfish were caught in all trawlable areas, recruits and juveniles mainly from the shallower parts of the bank, around the central mound and closer to the Irish shelf. A strong cohort was manifest in 2001, and it could be tracked over time by age matrices obtained with illicia age–length keys (ALKs) collected during the surveys. However, a mismatch in the cohort analysis suggests that the growth pattern based on illicia underestimates around three of the younger age classes. Using an ALK estimated numerically from a faster growth model, this mismatch disappears, which seems to confirm faster growth. Recruits of the 0-group and adults of age 4 (with the faster growth: ca. ~57–65 cm) dominated, whereas the intermediate age groups were scarce on the bank. These results and recent findings from tag-and-recapture experiments suggest that white anglerfish move to and from the Porcupine Bank, calling into question the stock boundaries currently accepted for the species in the North Atlantic.

Keywords: anglerfish, groundfish surveys, growth, movements, Northeast Atlantic Ocean, Porcupine Bank

Received 18 December 2007; accepted 15 July 2008; advance access publication 18 August 2008.


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