Estimates of sustainable rock lobster yield for the four islands of the Tristan da Cunha group

A simple replacement yield model is fitted to CPUE and annual catch data from 1997 for the four islands of the Tristan da Cunha group. The results suggest that the current TAC be maintained, with a slight increase (perhaps 5 tons) to the allocation to Gough, and the same decrease to the allocation to Tristan.