Research Document 1997/130

Spawning times of haddock and cod on Georges Bank as indicated by the MARMAP Icthyoplankton dataset

By F.H. Page, R. Losier and P. Berrien

Abstract

Spawning times for cod and haddock have been estimated from the MARMAP data set for fisheries statistical areas 5Zg-o. When the dates of cod stage III egg appearance are adjusted for an egg age of 15d, ninety percent of the spawning occurs after February 8 (December 5), 70% after March 11 (February 16) and 50% after March 14 (March 20) based on an abundance (presence-absence) weighting. When the date of haddock stage III egg appearance are adjusted for an egg age of 15d, ninety percent of the haddock eggs appear after March 11 (January 22), 70% after March 14 (March 18) and 50% after March 20 (March 25) based on an abundance (presence-absence) weighting. These estimates are consistent with previous estimates for the area.

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