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Changes in catchability of cod, haddock and whiting associated with the Scottish seine-net fleet
Cook, R.M.; Armstrong, D.W. (1985). Changes in catchability of cod, haddock and whiting associated with the Scottish seine-net fleet. J. Cons. - Cons. Int. Explor. Mer 42(2): 171-178
In: Journal du Conseil - Conseil International pour l'Exploration de la Mer. Conseil International pour l'Exploration de la Mer: Copenhague. ISSN 0020-6466, more

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Keywords
    Catchability; Fishing mortality; Mathematical analysis; Population dynamics; Pisces [WoRMS]; ANE, North Sea [Marine Regions]; Marine

Authors  Top 
  • Cook, R.M.
  • Armstrong, D.W.

Abstract
    The catchability coefficient Q of cod, haddock and whiting associated with the Scottish seine-net fleet is examined. Cod and haddock show increasing catchability for the period 1963 to 1979. The rise in Q is related to the spatial distribution of the fleet as vessels increasingly fish in areas of high fish abundance. Additionally, for haddock, catchability is related to year-clas strength. The utility of catchability trends in the prediction of fishing mortality is discussed.

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