Stock Status Estimating of 5 Shark Species in the Waters Around Taiwan Using a Length-Based Bayesian Biomass Estimation (LBB) Method

Frontiers in Marine Science

Mingru Chen¹  Yongjun Tian³  Peilong Ju⁴  Yu Zhao⁵  Shengyun Yang⁵  Jiamei Xiao⁵ 

[1] China-ASEAN College of Marine Sciences, Xiamen University Malaysia, Sepang, Malaysia;Frontiers Science Center for Deep Ocean Multispheres and Earth System, Ocean University of China, Qingdao, China;Laboratory for Marine Fisheries Science and Food Production Processes, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, China;Laboratory of Fisheries Oceanography, Fisheries College, Ocean University of China, Qingdao, China;State Key Laboratory of Marine Environmental Science, and College of Ocean and Earth Sciences, Xiamen University, Xiamen, China;Xiamen City Key Laboratory of Urban Sea Ecological Conservation and Restoration (USER), Xiamen University, Xiamen, China;

关键词: sharks;    stock status;    Taiwan waters;    LBB;    stock assessments;   

DOI  :  10.3389/fmars.2020.00632

来源: DOAJ

【 摘 要 】

Five shark stocks in the waters around Taiwan were assessed using the LBB method, addressing the present gap. Among them, only one filter-feeding shark, megamouth shark Megachasma pelagios, qualified as having a healthy status. Of the remaining filter-feeding shark, whale shark Rhincodon typus, was seriously overexploited, possibly even collapsed, spadenose shark Scoliodon macrorhynchos, and other two large sharks (dusky shark Carcharhinus obscurus and silky shark Carcharhinus falciformis) were also overexploited. These stock status estimates for the five shark species using the LBB method were consistent with international agreements such as IUCN, CITES and CMS.

【 授权许可】

Unknown