Stock Assessment and Rebuilding of Two Major Shrimp Fisheries (Penaeus monodon and Metapenaeus monoceros) from the Industrial Fishing Zone of Bangladesh

Journal of Marine Science and Engineering

Suman Barua¹  Mohammed Shahidul Alam¹  Qun Liu¹  Petra Schneider²  Md. Enamul Hoque³  Mohammad Muslem Uddin³  Mohammad Mojibul Hoque Mozumder⁴  Md. Mostafa Monwar⁵ 

[1] College of Fisheries, Ocean University of China, Qingdao 266003, China;Department for Water, Environment, Civil Engineering and Safety, University of Applied Sciences Magdeburg-Stendal, Breitscheidstraße 2, D-39114 Magdeburg, Germany;Department of Oceanography, University of Chittagong, Chattogram 4331, Bangladesh;Fisheries and Environmental Management Group, Helsinki Institute of Sustainability Science (HELSUS), Faculty of Biological and Environmental Sciences, University of Helsinki, 00014 Helsinki, Finland;Institute of Marine Science, University of Chittagong, Chattogram 4331, Bangladesh;

关键词: tiger shrimp;    brown shrimp;    depletion-based stock reduction analysis;    stock assessment;    overfishing;   

DOI  :  10.3390/jmse10020201

来源: DOAJ

【 摘 要 】

The two economically important shrimp species in Bangladesh are the tiger shrimp, Penaeus monodon, and the brown shrimp, Metapenaeus monoceros. However, a continuous decline in the landing of these species from the industrial trawling made it critical to assess their stock biomass status to explore their response to the present degree of removal. Given the minimum data requirement and robustness, this study employed the depletion-based stock reduction analysis (DB-SRA) to assess these fisheries rigorously. For the industrial fishing zone (beyond the 40 m depth in the EEZ of Bangladesh), the estimated historic mean carrying capacity (K) was 5015 metric tons for the Penaeus monodon and 35,871 metric tons for Metapenaeus monoceros. The estimated overfishing limits (OFL), which were much smaller than the reported catches throughout the time series, indicate the overfishing status of these fisheries. As a result, the estimated biomass for the reference year (B₂₀₂₀) for both species was lower than B_MSY, indicating that these fisheries are not producing MSY. Therefore, for the rebuilding and sustainable management of these stocks, this study recommended a catch limit of 100 metric tons for P. monodon and 750 metric tons for M. monoceros for the next ten years from biomass projections.

【 授权许可】

Unknown