Abstract
A simple method to estimate the parameters of the Ricker stock-recruitment model is described. The method is based on the Beverton and Holt yield per recruit model, as a function of fishing mortality, which can be used to describe the stock-recruitment relationship of an exploited stock even when the data are limited to 1 year of estimates for average biomass and fishing mortality, or, to describe virgin biomass (educated guess). Once the parameters are estimated, the surplus production and maximum sustainable yield can be established. The method is applied to Merluccius gayi of the central zone off Chile and Sardinops sagax off northern Chile. The application of the method is discussed.
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