Pacific ocean perch (Sebastes alutus) have undergone considerable over-exploitation in Queen Charlotte Sound, British Columbia, largely as a result of excessive removals by foreign fleets in the 1965-1974 period. A new catch-at-age model is used to reconstruct the history of this stock through simultaneous analysis for all cohorts present in the time series of catch data. The reconstruction extends from 1963-1977 and estimates that intensive fishing pressure reduced the stock from an initial size of 82,000 t to only 13,000 t by 1977. Numbers of fish at each age are estimated for the period of the data, together with estimates of fishing mortality. The reconstructed stock status and the stochastic stock-recruit relation estimated by this analysis are used as inputs for a model to simulate stock behaviour over 30-year periods, under various exploitation strategies. Results indicate that rehabilitation will be achieved only at fishing intensities about one-third of the terminal 1977 fishing mortalit...
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Archibald et al. (1983) studied this question.