Sustainable Management of Shrimp Trawl Fishery in Tonkin Gulf, Vietnam
Main Article Content
Abstract
This study investigates the sustainability of shrimp stock in the trawl fishery in the Tonkin Gulf, Vietnam. It is a small scale and multi-species fishery. The Verhulst-Schaefer and GompertzFox surplus production models are applied. There are two shrimp spawning seasons in a year in the Gulf. Therefore, in this study, the surplus production models, associated to catch calendar and effort data, are applied for a half-year time interval. The results indicatethat the fishing effort should be reduced by roughly 12-44% to achieve the maximum sustainable yield and 46-61% to reach the maximum economic yield. With a social discount rate of 10%, the effort should decrease by around 45-56% to achieve the optimal yield. The entry tax should be 92-279 USD/month/boat to achieve the maximum sustainable yield and 160-314 USD/month/boat to attain the maximum economic yield.
Keywords : bioeconomic analysis, shrimp trawl fishery, fishery management, Vietnam
JEL Classification : D24, H41, Q22
Article Details
The paper is published under CC BY-NC-ND, in which the article is freely downloaded and shared in its original form non-commercially and its citation details are identified.