Preliminary study on the coconut crab (Birgus latro) rearing in captive pond
Abstract
Preliminary study on the coconut crab (Birgus latro) rearing was employed in captive pond at Citarate village, Lebak Regency (Banten) from May to December 2008. The rearing activity was done in captive pond sized 5x5x1.3 m3 divided into 22 smaller ponds sized 1x1x1.3 m3 with a hiding hole (constructed by pile stones), supported by two small ponds sized 30x40x40 cm3 for sea and fresh water stocks, respectively. The coconut crab (N=22 individuals at cement pond I and N=18 individuals at cement pond II) were reared in each small ponds (density: 1 individual/pond), feed by a piece of coconut (20-50 gram per individual in each cement pond). The coconut and the water (sea and fresh water) were replaced for 2-3 times per week. Result of the study showed that survival rate was around 82% (ponds I) and 83% (ponds II), and mortality was around 18% (ponds I) and 18% (ponds II). The coconut crab growth at captive ponds I and II were around 17.5 and 52 gram per month, respectively.
Key words: Preliminary study, rearing, coconut crab (Birgus latro)
ABSTRAK
Uji coba pemeliharaan kepiting kelapa (Birgus latro) dilakukan di kolam penangkaran di Desa Citarate, Kabupaten Lebak (Banten) pada Bulan Mei sampai Desember 2008. Kegiatan pemeliharaan dilakukan pada bak semen berukuran 5x5x1.3 m2 yang terbagi menjadi 22 bak semen lebih kecil yang berukuran 1x1x1.3 m3 dilengkapi dengan tempat persembunyian (berupa tumpukan batu), serta bak kecil sebagai tempat penampungan air laut dan tawar masing-masing berukuran 30x40x40 cm3. Kepiting kelapa (N=22 ekor pada kolam I dan N=18 pada kolam II) dimasukkan ke dalam setiap kolam (kepadatan 1 individu/kolam), dan diberikan pakan utama berupa potongan kelapa ukuran sekitar 20-50 gram per individu per kolam. Penggantian kelapa dan air (tawar dan laut) dilakukan 2-3 kali per minggu. Hasil uji coba pemeliharaan kepiting kelapa menunjukkan bahwa tingkat sintasan (survival rate) di kolam peliharaan berkisar 82 (Kolam I) dan 83% (Kolam II), sedangkan tingkat kematian (mortalitas) sebesar 18 (Kolam I) dan 17% (Kolam II). Pertumbuhan kepiting kelapa di kolam penangkaran I dan masing-masing adalah sekitar 17,5 dan 52 gram per bulan.
Kata kunci: Uji coba, pemeliharaan, kepiting kelapa (Birgus latro).
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