Abstract
Abstract A generalized computer model for fish population simulation and maximum yield determination is described. The model utilizes age-specific natural mortality rates, growth rates, relative fecundities, and any desired stock-recruitment relationship. Best harvest strategies are found by treating long-term yield as a response surface on the set of age- and year-specific fishing rates. The model is illustrated using data on arctic cod, stream brook trout, and on a hypothetical population with strong age-class dominance. Best predicted management strategies include periodic harvest when age at entry to the fishery cannot be controlled, but maximum yield is usually obtained with constant fishing rate.
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