Title
The performance of stock indicators of grouper (Serranidae) and snapper (Lutjanidae) fisheries in Saleh Bay, Indonesia
Author(s)
Efendi, Diding Sudira;Adrianto, Luky;Yonvitner;Wardiatno, Yusli;Agustina, Siska
Published
2020
Publisher
Aquaculture, Aquarium, Conservation & Legislation
Abstract
Continuous overexploitation is the biggest problem presently facing small-scale fisheries in Saleh Bay, Indonesia. To further address the fish population decline in this area, the Provincial Government of West Nusa Tenggara (NTB) has introduced the Governor Regulation No. 32 of 2018 since September 2018. This study aims to estimate the status of fish stocks of grouper and snapper in Saleh Bay under the current policy regime. The TropFishR Studio and the length-based spawning potential ratio (LB-SPR) analysis were used to assess stock status. The analysis showed that all species studied indicated overexploitation, with exploitation rates above 0.5: 0.57 for Plectropomus leopardus, 0.53 for Plectropomus maculatus, 0.6 for Epinephelus coioides, and 0.64 for Lutjanus malabaricus. The model results also indicated heavy exploitation for Epinephelus coioides, with estimated SPR for the species below the limit reference point of 0.2. Therefore, to reduce the phenomena of overfishing, the management measures regarding the minimum legal size and gear restrictions should be strengthened in combination with areas and seasonal fishing prohibition strategies in spawning aggregation sites for vulnerable species, as well as institutional development through capacity building mechanisms, and law enforcement.
Keywords
biological reference point;exploitation rate;Saleh Bay;SPR

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