Maximum Sustainable Yield Estimates of Carangoides Fishery Resource in Pakistan and its Bioeconomic Implications
Maximum Sustainable Yield Estimates of Carangoides Fishery Resource in Pakistan and its Bioeconomic Implications
Muhammad Mohsin1, Dai Guilin1,*, Chen Zhuo1, Yin Hengbin1 and Muhammad Noman2
ABSTRACT
Due to the decline of marine capture fisheries in Pakistan, it is necessary to evaluate fishery status and their economic implications of major commercially hunted fish species. In this study maximum sustainable yield (MSY) of Carangoides fishery from Sindh, Pakistan is estimated by using catch and effort data. For data analysis, two specialized fishery software CEDA (catch and effort data analysis) and ASPIC (a stock production model incorporating covariates) were employed. Three surplus production models (SPMs) viz., Fox Model (FM), Schaefer Model (SM) and Pella-Tomlinson Model (PTM) were used in CEDA along with three error assumptions (EAs) viz., normal error assumption (NEA), log-normal error assumption (LNEA) and gamma error assumption (GEA). On the other hand, in ASPIC two SPMs viz., Fox Model (FM) and Logistic Model (LM) were employed. MSY estimates for Carangoides fishery by using CEDA and ASPIC were between 1404-1709 t (tonnes) and 1409-1705 t correspondingly. The calculated MSY range by both the software significantly overlaps. However, ASPIC results showed higher values of R2. On the basis of obtained results, it is concluded that this fishery resource is overexploited which confers several economic disadvantages. In order to manage this fishery resource recommended target reference point (TRP) for MSY in Pakistani marine waters along the Sindh coast is between 1500-1700 t. Moreover, the harvest of this fishery resource beyond 1750 t should be considered as limiting reference point (LRP) which will result in economic loss.
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February 2019
Vol. 51, Iss. 1, Pages 1-398
