Cohort analysis of the numbers by age-group of Atlantic cod caught off southern Labrador and eastern Newfoundland during 1961-80 were used, together with certain assumptions on inshore migration of cod and the seasonal nature of the offshore and inshore fisheries, to estimate rates of inshore exploitation of the stock during 1961-76.The results indicated that during 1961-74 only a small proportion (about 5%) of the cod, which survived the offshore fishery each year, were actually caught in the inshore fishery in the same year, although the proportions were higher in 1975 and 1976.Factors affecting the annual inshore migration of cod and the estimation of inshore exploitation rates are discussed. 3MFlemish Cap 3K 2J
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Creaser et al. (1984) studied this question.