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

Show full item record



Permalink

http://hdl.handle.net/10138/335604

Citation

Barman, P.P.; Liu, Q.; Al-Mamun, M.A.; Schneider, P.; Mozumder, M.M.H. Stock Assessment of Exploited Sardine Populations from Northeastern Bay of Bengal Water, Bangladesh Using the Length-Based Bayesian Biomass (LBB) Method. J. Mar. Sci. Eng. 2021, 9, 1137.

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
Publisher: Multidisciplinary Digital Publishing Institute
Date: 2021-10-16
URI: http://hdl.handle.net/10138/335604
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 (<i>Sardinella fimbriata</i>, <i>Dussumieria acuta</i>, and <i>D. elopsoides</i>) in the Bay of Bengal (BoB), Bangladesh using the LBB method. The estimated relative biomass for <i>S. fimbriata</i> was <i>B/B</i><sub>0</sub> &lt; <i>B<sub>MSY</sub>/B</i><sub>0</sub>, indicating the overfished biomass, while the assessed <i>B/B</i><sub>0</sub> &gt; <i>B<sub>MSY</sub>/B</i><sub>0</sub> for <i>D. acuta</i> and <i>D. elopsoides</i> indicates healthy biomass. Additionally, for <i>S. fimbriata</i>, the length at first landing was smaller than the optimum length at first landing (<i>Lc</i> &lt; <i>L<sub>c_opt</sub></i>), indicating an overfishing status, but a safe fishing status was assessed for <i>D. acuta</i> and <i>D. elopsoides</i> (<i>Lc</i> &gt; <i>L<sub>c_opt</sub></i>). Therefore, increasing the mesh size of fishing gears may help to ensure the long-term viability of sardine populations in the BoB, Bangladesh.


Files in this item

Total number of downloads: Loading...

Files Size Format View
jmse-09-01137.pdf 1.998Mb PDF View/Open

This item appears in the following Collection(s)

Show full item record