STOCK STUDY AND THUNNUS SP (TUNA) FISHING SEASON ANALYSIS OF FISHES LANDED AT PPN PRIGI TRENGGALEK EAST JAVA

Fisheries Science

The production of Tongkol catches at PPN Prigi, Trenggalek Regency shows a decrease in catches. This is possible because of the increase in fishing efforts in recent times. So that it is necessary to manage the fishing of tuna species to increase the growth capacity of fish stocks. As the first step in this research, an assessment of fish stocks, utilization rates, and analysis of the fishing season will be carried out. The research was carried out in January 2021 - July 2021, at PPN Prigi, Trenggalek Regency. This research uses a descriptive method with case study type. Data collection was carried out using a survey method. The data used are catch data and data on the number of trips for all fishing gear that catch Tongkol for 10 years (2011-2020). The analysis is used in the calculation of production surplus, calculation of utilization rate, and fishing season. Tuna fishing season occurs in February (151%), March (181%), April (123%), May (198%), June (113%), July (134%). Tuna fish has Fopt: 806 trips, CMSY: 156.058 tons, CPUE MSY: 193.57 tons/trip. The utilization rate of tuna is 128%.

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