TECHNICAL AND FINANCIAL ANALYSIS OF BLUE SWIMMING CRAB (PORTUNUS PELAGICUS) FISHING BUSINESS IN REMBANG DISTRICT, INDONESIA

This research analyzed the technical and financial aspects of blue swimming crab fishing business using folding tray in Tunggul Sari, Rembang District, Indonesia. This research was conducted from February to March 2016. The samples of this descriptive research were selected using purposive sampling method. The obtained data were then analysed based on business feasibility analysis using some indicators including NPV, IRR, payback period and R/C Ratio. The results of the technical analysis showed that fishermen employed folding trays with single size (Length x width x height: 45 cm x 30 cm x 18 cm), yet they applied different numbers of folding trays, ranging between 500 – 600 trays. They also had similar size of fishing boats under 5 GT and they applied one day fishing system. Meanwhile, the results of the financial analysis showed Net Present Value > 0, amounted to IDR 94.691.087 per month, Internal Rate of Return of 45.56% greater than the interest rate of 12%, payback period of 3 years 3 months and 3 days and R/C ratio > 1 at 1.20. Regarding to those results, the blue swimming crab fishing business run using folding tray in Tunggul Sari has been regarded feasible

CONSTRUCTION ANALYSIS OF BOTTOM GILLNET AS AN ALTERNATIVE TO BOTTOM TRAWL IN PEKALONGAN WATERS

A bottom trawl is a fishing tool that is not recommended by the government to capture demersal fish resources in Pekalongan waters. Therefore, a bottom gillnet is an alternative substitute for bottom trawl fishing gear in catching demersal fish. This study aimed to technically analyze bottom gillnet fishing gear and the composition of its catch in Pekalongan waters. This research was carried out in the waters of Pekalongan in August 2018 with a 3 GT fishing boat. A bottom gillnet is PA Monofilament 0.4 mm; 4 inch with a specification of upper net length by 30 meters, bottom net length by 42 meters, net height by 35 mesh for one piece of net, and a hanging ratio by 0.41. With these specifications, bottom gillnet can capture 3 dominant fish species such as Scomberoides commersonnianus, Pomadasys maculatus, and Plicofollis dussumieri where 50% of the fish are viable to catch

MANAGEMENT STATUS OF MACKAREL (RASTRELLIGER SP.) RESOURCES IN THE FISH RESOURCES DOMAIN OF REMBANG DISTRICT, CENTRAL JAVA PROVINCE OF INDONESIA, AS A PART OF ECOSYSTEM APPROACH OF FISHERIES MANAGEMENT

Mackerel is an economically high and dominant fish caught in the waters of Rembang District. Its production volume is the third largest in 2017, by 2,013 tons. Mackerel is commonly caught using a small pelagic – one boat operated purse seine with a 30 GT boat down. Intensive fishing efforts will endanger the population of this fish, so management is needed so that fish resources can be sustainable. The study was conducted in Rembang District to see the status of mackerel (Rastrelliger sp.) resource management in the domain of fish resources with an ecosystem approach. It lasted from December 2018 to February 2019. It employed a survey method. The indicators used in the domain of fish resource are standard CPUE, trends in fish size, proportion of juvenile fish caught, catch species composition, range collapse of fish resources, and ETP species. The results showed that standard CPUE, trends in fish size, catch species composition, proportion of juvenile fish caught, and ETP species are in good condition with a score of 3 (green modeling flag). While the range collapse of fish resources is in a moderate condition, with a score of 2 (yellow modeling flag). The composite score of 97 shows that management status of Mackerel resources in the domain of fish resource in Rembang District is in very good condition (dark green flag modeling)