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| Experimental Rearing of Sandfish Holothuria scabra Juveniles in Net Cages on Open Sea |
| CHEN Mingqiang,ZHANG Li,YANG Xueming,JIANG Linyuan,HUANG Guanghua,LI Youning |
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Abstract Sandfish Holothuria scabra juveniles with average initial body length of 1 .13 cm and body weight of 0.04 g were reared in three net cages with the size of 0 .6 m × 0 .6 m × 1 m at a frame site for shellfish culture on open sea for 95 days .The results showed that the juveniles had average final body length of 3 .24 cm ,with daily growth of 0 .02 cm ,and final body weight of 0 .84 g ,with daily weight gain of 0.008 g ,as 20 times large as the initial body weight ,and with survival of 57% .The best growth of the juveniles was observed in the first 25 days of the experiment with steady lower survival rate ,thereafter the growth and survival rate of the juveniles was found to be changed slowly and keep stable until the end of the experiment .The findings indicated that sandfish juvenile culture in net cages on the open sea was technically feasible ,but the effects were far from the ideal and further study is needed for improvement of the techniques .
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Received: 25 September 2015
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