Journal
SUSTAINABILITY
Volume 14, Issue 19, Pages -Publisher
MDPI
DOI: 10.3390/su141912208
Keywords
shrimp trawl; codend selectivity; size selectivity; catch efficiency; T90
Funding
- National Key R&D Program of China [2020YFD0901205]
- Central Public-interest Scientific Institution Basal Research Fund, South China Sea Fisheries Research Institute, CAFS [2020YJ01]
- Ministry of Agriculture and Rural Affair Standard and management regime of fishing gears in the South China Sea
Ask authors/readers for more resources
This study tested and compared the size selectivity and catch efficiency of four codends for shrimp trawl fishery in the South China Sea. The results showed that increasing mesh sizes or applying specific mesh shapes can improve catch efficiency and size selectivity. Based on the findings, the T0 codend with a mesh size of 35 mm or the T90 codend with a mesh size of 30 mm are recommended as potential choices to mitigate the issue of undersized individuals. This study has important implications for gear-based management in the specific shrimp trawl fishery of the South China Sea.
In order to obtain gear-based management instruments of shrimp trawl fishery for southern velvet shrimp in the South China Sea (SCS), the size selectivity and catch efficiency of four codends were tested and compared. These codends included two mesh sizes, 30 and 35 mm, and two mesh shapes, T0 (diamond-mesh) and T90 (diamond-mesh turned by 90 degrees), respectively. Our results demonstrated that increasing the mesh-sizes of the T0 codends or/and applying the T90 codends would statistically and significantly improve the size selectivity and catch efficiency. Comparing the size selectivity and catch efficiency of four codends tested, and accounting for the results of the previous study, we conclude that the T0 codend with a mesh size of 35 mm (T0_35) or T90 codend with a mesh size of 30 mm (T90_30) would be potential choices for mitigating the bycatch issue of undersized individuals for southern velvet shrimp (Metapenaeopsis palmensis) in the SCS. We recommend that they are applied as the compulsory gears in the fishery management regulation. Our study will be beneficial for the decision-making regarding gear-based management for sustainable fishing in the specific shrimp trawl fishery of the SCS.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available