Report of the bio-economic modelling workshop on the small pelagic fisheries of the west coast of peninsular Malaysia
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A bio-economic modelling workshop was organized in order to improve the information base for the preparation of a fisheries management plan of the small pelagic fisheries of the West Coast of Peninsular Malaysia. Plan preparation by the Department of Fisheries is supported by the FAO/Norway FishCode Project (see Field Reports F-13 and F-17). Two different modelling approaches have been applied to these fisheries. The surplus production bioeconomic model of the Gordon-Schaefer type sugg ests that effort at MSY is about 387,000 standard purse seine days producing a MSY of about 109,000 tonnes of small pelagics. At the MSY effort level, however, resource rent is completed dissipated and the fishery incurs an estimated loss of MR 25.6 million. As current effort level (data of 1997) is about 380,000 standardized fishing days, the analysis suggests that fishing effort and capacity are excessive. A resource rent of about MR 77 million might be attainable through the reducti on of fishing effort to 180,000 standardized fishing days, i.e. less than half of the current level. This result should be interpreted as providing an order of magnitude only because of the application of a single species model to an assemblage of small pelagic species. One species group, namely Rastrelliger, contributes 73 percent to the ex-vessel value of these fisheries. This result should also be interpreted cautiously because the shoaling nature of small pelagic species was not expl icitly taken into account in the modelling exercise....