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Norwegian investigations on young cod and haddock in the Barents Sea during the winter 1982

Dalen, John; Hylen, Arvid; Nakken, Odd; Randa, Kjell; Smedstad, Odd M.
Working paper
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URI
http://hdl.handle.net/11250/100219
Date
1982
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  • Barents Sea NOR-RUS demersal fish cruise in winter [39]
  • ICES CM documents authored by IMR scientists (1949-2011) [3138]
Abstract
An acoustic survey and a bottom trawl survey were carried out in the Barents Sea during winter 1982. Both surveys showed that there has been a reduction in the total number of cod of about 50% and about 75% for haddock in the area surveyed. This reduction mostly reflect the reduction of fish 6 years and older for cod and 5 years and older for haddock. This is probably due to an early maturing of the 1975 yearclass of cod

and the 1976 yearclass of haddock and a migration to spawning areas south of the area surveyed. For cod 2-4 years old no reduction was observed, and for young haddock the 1979 yearclass was reduced. The investigations indicate that the yearclasses 1977-1980 are very poor for both cod and haddock.
Description
This paper not to be cited without prior reference to the authors.
Publisher
ICES
Series
ICES CM documents
1982/G:41

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