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Different behaviour of North and Irish Sea cod

Author

Listed:
  • David Righton

    (Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory)

  • Julian Metcalfe

    (Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory)

  • Paul Connolly

    (The Marine Institute)

Abstract

Cod (Gadus morhua) are bottom-living, predatory fish of considerable commercial importance1, but surprisingly little is known of what cod do for most of their time because it is difficult and costly to study the behaviour of fish at sea2,3. Here we use electronic data-storage tags to investigate the behaviour of cod in the North Sea and in the Irish Sea and find that there are marked differences in the activity of fish in the two regions. This difference could be explained by dissimilar foraging ecology and may have implications for the future management of severely depleted cod stocks.

Suggested Citation

  • David Righton & Julian Metcalfe & Paul Connolly, 2001. "Different behaviour of North and Irish Sea cod," Nature, Nature, vol. 411(6834), pages 156-156, May.
    • Handle: RePEc:nat:nature:v:411:y:2001:i:6834:d:10.1038_35075667
    DOI: 10.1038/35075667
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    Cited by:

    1. Timothy B Grabowski & Vilhjálmur Thorsteinsson & Bruce J McAdam & Guđrún Marteinsdóttir, 2011. "Evidence of Segregated Spawning in a Single Marine Fish Stock: Sympatric Divergence of Ecotypes in Icelandic Cod?," PLOS ONE, Public Library of Science, vol. 6(3), pages 1-9, March.

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