Effect of photoperiod on growth and survival rate of sea cucumber larvae (Holothuria scabra)
1998
Moria S., S.B. | Sugama, K. | Swastika, M. (Loka Penelitian Perikanan Pantai Gondol, Bali (Indonesia))
إنجليزي. The experiment aimed to find out the effect of photoperiod on growth and survival rate of pentactula stage of sea cucumber larvae. Fifteen fiberglass tanks of 30 L in size were used in this experiment. Each tank was stocked with 120 larvae of sea cucumber of 15 days old of pentactula stage and the larvae were reared for 30 days. Five photoperiod treatments were applied i.e.: A: 12 hours light-12 hours dark (LD=12:12); B: 8 hours light-16 hours dark (LD=8:16); C: 4 hours light-20 hours dark (LD=4:20); D: 0 hours light-24 hours dark (LD=0:24) and E: 24 hours light-0 hours dark (LD=24:0). The results showed that photoperiod of 12 hours light and 12 hours dark gave significantly (P0.05) highest survival rate (60.83 percent). However, effect of photoperiod was not significant on the growth of the larva (P0.05)
اظهر المزيد [+] اقل [-]الأندونيسية. Tujuan penelitian ini adalah untuk mengetahui pengaruh periode penyinaran terhadap pertumbuhan dan sintasan larva teripang pasir stadia pentactula. Wadah percobaan adalah 15 bak serat gelas volume 30 L yang masing-masing ditebari dengan 120 ekor larva teripang pasir stadia pentactula umur 15 hari dan dipelihara selama 30 hari. Perlakuan periode penyinaran adalah A: 12 jam terang 12 jam gelap; B: 8 jam terang 16 jam gelap; C: 4 jam terang 20 jam gelap; D: 0 jam terang 24 jam gelap dan E: 24 jam terang 0 jam gelap. Percobaan berlangsung selama 30 hari. Hasil penelitian menunjukkan bahwa periode penyinaran berpengaruh terhadap sintasan larva (P0,05), di mana sintasan larva tertinggi diperoleh pada periode penyinaran 12 jam terang 12 jam gelap (60,83 persen). Namun demikian periode penyinaran tidak berpengaruh terhadap pertumbuhan larva (P0,05)
اظهر المزيد [+] اقل [-]