Article ID: | iaor19961245 |
Country: | United Kingdom |
Volume: | 46 |
Issue: | 9 |
Start Page Number: | 1052 |
End Page Number: | 1062 |
Publication Date: | Sep 1995 |
Journal: | Journal of the Operational Research Society |
Authors: | Glen J.J. |
Keywords: | programming: integer |
The concept of sustainable yield, i.e. the fish catch that can be maintained in the long run from a fishery in a steady state, is widely used in fisheries management. In traditional methods of sustainable yield analysis, based on the Schaefer model of a fish stock, the age structure of the stock is ignored. Approaches based on the Beverton-Holt multicohort fish population model take account of age structure but assume that instantaneous natural and fishing mortality rates are constant throughout the year. Using a fish population model in which this assumption is not required, a mixed integer programming model is developed for the analysis of a multicohort single-species fishery in a steady state. This new method of sustainable yield analysis is demonstrated using data for the western mackerel fishery. Comparisons with results from other studies of this fishery are presented.