Research Document 1998/25
Semi-parametric inferences about fish stock size using sequential population analysis (SPA) and quasi-likelihood theory
By N. Cadigan
Abstract
In this paper we present Quasi-likelihood methods for stock size inferences based on an SPA and estimation with relative abundance indices. These methods are applicable to a variety of types of indices. These methods are semi-parametric in that they only require assumptions about the mean and variance of the indices, and resulting inferences have a degree of distributional robusteness. Profile quasi-likelihood methods are used to stochastically evaluate the impact of a commercial fishing quota on future stock size. These methods are applied to a cod stock off the east coast of Canada
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