Stock Assessment of Exploited Sardine Populations from Northeastern Bay of Bengal Water, Bangladesh Using the Length-Based Bayesian Biomass (LBB) Method

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Barman , P P , Liu , Q , Al-Mamun , M A , Schneider , P & Mozumder , M M H 2021 , ' Stock Assessment of Exploited Sardine Populations from Northeastern Bay of Bengal Water, Bangladesh Using the Length-Based Bayesian Biomass (LBB) Method ' , Journal of marine science and engineering , vol. 9 , no. 10 , 1137 . https://doi.org/10.3390/jmse9101137

Title: Stock Assessment of Exploited Sardine Populations from Northeastern Bay of Bengal Water, Bangladesh Using the Length-Based Bayesian Biomass (LBB) Method
Author: Barman, Partho Protim; Liu, Qun; Al-Mamun, Md Abdullah; Schneider, Petra; Mozumder, Mohammad Mojibul Hoque
Contributor organization: Helsinki Inequality Initiative (INEQ)
Helsinki Institute of Sustainability Science (HELSUS)
Faculty of Biological and Environmental Sciences
Date: 2021-10
Language: eng
Number of pages: 13
Belongs to series: Journal of marine science and engineering
ISSN: 2077-1312
DOI: https://doi.org/10.3390/jmse9101137
URI: http://hdl.handle.net/10138/337726
Abstract: Stock assessment is necessary to understand the status of fishery stocks. However, for the data-poor fishery, it is very challenging to assess the stock status. The length-based Bayesian biomass (LBB) technique is one of the most powerful methods to assess the data-poor fisheries resources that need simple length frequency (LF) data. Addressing the present gap, this study aimed to assess the stock status of three sardines (Sardinella fimbriata, Dussumieria acuta, and D. elopsoides) in the Bay of Bengal (BoB), Bangladesh using the LBB method. The estimated relative biomass for S. fimbriata was B/B-0 < B-MSY/B-0, indicating the overfished biomass, while the assessed B/B-0 > B-MSY/B-0 for D. acuta and D. elopsoides indicates healthy biomass. Additionally, for S. fimbriata, the length at first landing was smaller than the optimum length at first landing (Lc < L-c_opt), indicating an overfishing status, but a safe fishing status was assessed for D. acuta and D. elopsoides (Lc > L-c_opt). Therefore, increasing the mesh size of fishing gears may help to ensure the long-term viability of sardine populations in the BoB, Bangladesh.
Subject: clupeiformes
size frequency
capture fisheries
stock status
management
REFERENCE POINTS
FISHERIES
CATCH
COASTAL
BIOLOGY
FISH
1181 Ecology, evolutionary biology
Peer reviewed: Yes
Rights: cc_by
Usage restriction: openAccess
Self-archived version: publishedVersion


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