Assessing recent gradual upsurge of marine captured Hilsa stock(Tenualosa ilisha)in Bangladesh

作     者：Ehsanul Karim Qun Liu Ming Sun Partho Protim Barman Shanur Jahedul Hasan M.Enamul Hoq 

作者机构：College of FisheriesOcean University of ChinaQingdao 266003China Bangladesh Fisheries Research Institute(BFRI)Mymensingh 2201Bangladesh 

出 版 物：《Aquaculture and Fisheries》 (渔业学报（英文）)

年 卷 期：2019年第4卷第4期

页      面：156-165页

学科分类：090803[农学-渔业资源] 0908[农学-水产] 09[农学] 

基　　金：This work is supported by the special research fund of Ocean University of China(201022001) 

主　　题：Tenualosa ilisha SPM(surplus production model) CEDA(catch and effort data analysis) ASPIC(A surplus production model incorporate covariates) TropFishR 

摘      要：The anadromous Hilsa shad(Tenualosa ilisha)fishery is the prime single species fishery of Bangladesh that driven by open access system which was selected for this *** purpose of this study was to assess the MSY(Maximum Sustainable Yield)in order to review the effectivity of the ongoing management policy of this *** this reason,time series maritime or downstream catch-effort data of the Bay of Bengal were assembled from the Department of Fisheries,***,CPUE and other population parameters were estimated through Surplus Production Models(SPMs)using computer software packages of CEDA,ASPIC and *** biological reference points of MSY from the best fitted CEDA package was 282,100 t(R^(2)=0.822)for the normal assumptions of the Schaefer and Pella-Tomlinson *** values from the ASPIC packages(324,100 t and 263,500 t;for Fox and Schaefer model)and Schaefer model from TropFishR(345,486t)were larger than the catch in 2017(278,948 t).The values of F ratio(F/FMSY)for all SPMs were found less than 1 and B ratio(B/BMSY)were greater than 1 that clearly indicate the gradual upsurge of the Hilsa *** on the above findings of BRPs,it also proves the effectivity of the current“Hilsa fishery management action planby the authorities.