In this paper, we illustrate methods for evaluating the impact
of fisheries using the fishery exploitation for bigeye tuna (Thunnus
obesus) in the eastern Pacific Ocean (EPO) as a case study.We focus
on the impacts of the purse-seine, Japanese longline, and Taiwanese
longline fisheries as examples. For this purpose, the stock assessment
carried out by Aires-da-Silva andMaunder (2008), using Stock