Uji Coba Krendet Bertingkat Tiga Pintu dan Krendet Tradisional untuk Pemanfaatan Krustasea di Teluk Palabuhanratu

Abstract

Penelitian ini dilaksanakan di Teluk Palabuhanratu yang memiliki potensi sumber daya krustasea tinggi, khususnya rajungan dan lobster. Tujuan penelitian membandingkan efektivitas krendet bertingkat tiga pintu dan krendet tradisional dalam meningkatkan hasil tangkapan. Metode yang digunakan adalah experimental fishing sebanyak 25 trip. Pengoperasian bubu dilakukan dengan sistem rawai, masing-masing menggunakan 3 unit krendet tradisional berdiameter 80 cm dan 3 unit krendet bertingkat tiga pintu dengan diameter perangkap bawah 80 cm dan atas 60 cm. Seluruh krendet dilengkapi booster umpan campuran ikan tembang, cumi-cumi, cacing tanah, dan telur ayam yang dibekukan. Data yang dikumpulkan meliputi jumlah, berat, dan panjang karapas krustasea hasil tangkapan. Analisis dilakukan secara deskriptif kemudian diuji menggunakan uji normalitas dan uji Mann-Whitney. Hasil penelitian menunjukkan bahwa krendet bertingkat tiga pintu menghasilkan jumlah dan berat tangkapan krustasea lebih tinggi dibandingkan krendet tradisional. Produktivitasnya lebih besar, yaitu 2.28 ± 0,27 ekor/trip. 0.094 ± 0,014kg/trip, maupun. 0.031 ± 0,014 kg/unit, 0.66 ± 0,09 ekor/unit. Serta margin produksi yang meningkat signifikan sebesar 200 % dalam ekor dan 273,4 % dalam kg. Peningkatan ini diduga dipengaruhi oleh perluasan ruang tangkapan bubu dengan desain tiga pintu yang menambah peluang masuknya target tangkapan. Dengan demikian krendet bertingkat tiga pintu berpotensi menjadi alternatif teknologi penangkapan yang lebih efektif dan mendukung pemanfaatan sumber daya krustasea.

This study was conducted in Palabuhanratu Bay, which has a high potential for crustacean resources, particularly blood-spotted swimming crabs (Portunus sanguinolentus) and scalloped spiny lobster (Panulirus homarus). This study aims to compare the effectiveness of the storeyed krendet trap with three-door and the traditional one to catch crustacean. An experimental fishing method was employed over 25 fishing trips using a longline system. Each fishing trip deployed three traditional krendet traps with a diameter of 80 cm and three storeyed krendet traps with three-door with a lower trap diameter of 80 cm and an upper trap diameter of 60 cm. All traps were equipped with frozen bait boosters made from Indian mackerel (Rastrelliger kanagurta), squid, earthworms, and chicken eggs. The data of number of individuals, total catch weight, and carapace length of the captured crustaceans were collected. The data were then analyzed descriptively, followed by a normality test and the Mann–Whitney test. The results showed that the storeyed krendet traps with three-door harvested higher numbers and weights of crustacean catches than the traditional one. Compared with the traditional krendet trap, the production margin increased by 200% based on the number of individuals and by 273.4% based on catch weight. The improved fishing performance is likely attributable to the larger traping room and the additional trap entrances, which increased the probability of crustaceans entering the trap. Therefore, the storeyed krendet trap with three-door has the potential to serve as a more effective fishing technology for utilization of crustacean resources.