Pustaka Ilmiah Universitas Padjadjaran

Abstrak

Pengaruh Warna Cahaya Terhadap Kelangsungan Hidup Dan Pertumbuhan Larva Kerapu Bebek (Effect Of Light Colour On Survival And Growth Rate Of Polkadot Grouper Larvae)

Penelitian ini dilakukan untuk mendapatkan warna cahaya yang tepat dalam pemeliharaan larva kerapu bebek secara intensif sehingga dapat meningkatkan kelangsungan hidup dan pertumbuhan larva. Penelitian dilaksanakan di Balai Budidaya Air Payau Situbondo, Jawa Timur dari bulan Januari sarnpai dengan bulan Februari 2012. Larva kerapu bebek yang digunakan adalah larva yang berumur satu hari setelah menetas dan dipelihara dalam tangki plastik warna biru berkapasitas 30 L selama 14 hari dengan padat tebar larva 5 ekor/L. Penelitian menggunakan lima perlakuan cahaya yaitu A (merah), B (kuning), C (hijau), D (biru) dan E (putih) dengan intensitas cahaya sebesar 600 lux. Hasil penelitian menunjukkan kelangsungan hidup terbaik adalah perlakuan D (5.67%). diikuti C (5,33%) dan E (5,33%), yang berbeda nyata dengan perlakuan A (2,67%), dan B (2,33%). Pertumbuhan panjang mutlak menunjukkan hasil yang tidak berbeda nyata berturut-turut yaitu A (1,58 mm), B (1,54 mm), C (1.58 mm), D (1,71 mm) dan E (1,75 mm).

This research was conducted to determine the effect of light color on the survival and growth of mouse grouper larvae to get the exact light color in the larviculture of intensive mouse grouper that can improve survival and growth of mouse grouper larvae. This research have been done at Center for Brackish Water Aquaculture Situbondo, East Java from January until February 2012. Mouse grouper larvae used in the study were larvae of one day age after hatching and maintained in plastic tanks with blue colour with 30 L of sea water for 14 days with larvae at density 5 individu/L. The treatments used five light that were A (red), B (yellow), C (green), D (blue) and E (white) with a light intensity of 600 lux. The results of this study provide the highest survival from treatment D (5.67%), followed by treatment C (5.33%) and E (5.33%), and significantly different from treatment A (2.67%), and B (2.33%). The absolute growth length in this study showed no significant difference respectively, A (1.58 mm), B (1.54 mm), C (1.58 mm), D (1.71 mm) and E (1.75 mm).