Assessments of 14 Exploited Fish and Invertebrate Stocks in Chinese Waters Using the LBB Method

Last modified: 
May 29, 2020 - 11:05am
Type: Journal Article
Year of publication: 2020
Date published: 05/2020
Authors: Cui Liang, Weiwei Xian, Shude Liu, Daniel Pauly
Journal title: Frontiers in Marine Science
Volume: 7

Due to limited data availability, only a small subset of the exploited fish and invertebrate populations have been assessed along Chinese coasts, which precludes comprehensive management of the fisheries. Here, we applied a length-based Bayesian biomass estimator (LBB) to 14 fish and invertebrate stocks in China’s coastal waters to estimate their growth, length at first capture and current relative biomass (B/B0B/BMSY) from length-frequency (LF) data. Of the 14 populations assessed, one have collapsed, nine are grossly over-exploited, and three are overfished. Moreover, 13 populations have smaller mean lengths at first capture (Lc) than the optimal length at first capture (Lc_opt), indicating that they are suffering from growth overfishing. Thus, larger mesh sizes in commercial fishery would increase both the catch and biomass for these species, given current levels of fishing mortality. Our results confirm that fishery resources in China’s coastal waters are strongly depleted, and that stricter management measures are needed to restore the abundance of China’s marine fisheries resources.

Freely available?: 
Yes
Summary available?: 
No