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ICES Journal of Marine Science: Journal du Conseil Advance Access originally published online on August 5, 2009
ICES Journal of Marine Science: Journal du Conseil 2009 66(10):2183-2194; doi:10.1093/icesjms/fsp192
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© 2009 International Council for the Exploration of the Sea. Published by Oxford Journals. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

Integrating spatial and temporal mortality from herring on capelin larvae: a study in the Barents Sea

O. P. Pedersen1, T. Pedersen1, K. S. Tande3 and D. Slagstad2

1 Norwegian College of Fishery Science, University of Tromsø, 9037 Tromsø, Norway
2 SINTEF Fisheries and Aquaculture, 7465 Trondheim, Norway
3 Bodø University College, 8049 Bodø, Norway

Correspondence to O. P. Pedersen: tel: +47 77 646036; fax: +47 77 646020; e-mail: ope000{at}uit.no

Pedersen, O. P., Pedersen, T., Tande, K. S., and Slagstad, D. 2009. Integrating spatial and temporal mortality from herring on capelin larvae: a study in the Barents Sea. – ICES Journal of Marine Science, 66: 2183–2194.

Barents Sea herring and capelin are commercially very important fish stocks. We investigate the spatial and temporal mortality rate of capelin larvae in 2001 as a function of herring predation. Our methods are based on Lagrangian modelling, field surveys, and experimental data. The impact of juvenile herring predation on capelin recruitment is corroborated, in particular the importance of the integrated spatio-temporal overlap between the two stocks. Capelin larvae were reduced to 20–50% in two weeks in accordance with different simulation scenarios. Hamre advanced a hypothesis in 1994 that juvenile herring are important predators of capelin larvae and a main cause of poor capelin recruitment in years when herring are very abundant in the Barents Sea. This hypothesis is supported through the results of this work.

Keywords: capelin larvae, juvenile herring, modelling, mortality, predation

Received 30 October 2008; accepted 18 May 2009; advance access publication 5 August 2009.


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