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Research Document - 2004/106

Growth and distribution of 4TVW haddock

By Mohn, R.K., J.E. Simon

Abstract

The directed fishery for 4TVW haddock was closed in 1993 and has not been re-opened in spite of some rebuilding. Research survey data are used to examine the current numbers, growth and distribution of the haddock resource. Furthermore, a Test Fishery was planned for, and conducted in, 2004 to investigate the potential of 4TVW haddock for harvest if the minimum size, current 43 cm, were dropped to a smaller size to make more of the haddock available. Results show that both total and spawning biomass are near the long term average. However, this rebuilding is dominated by small fish as the growth rate has steadily fallen since the early 1980s.

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