Abstract: Pilot-scale tests were conducted to study effect of self-pollution on growth and survival rate of larvae of Haliotis discus hannai Ino at a temperature of 12~14℃. The results revealed that the contents of NH+4-N, NO-2-N, PO4-P and COD Mn increased as a rate of 0.176, 0.050, 0.184, 0.294 mg/(g·d) as water exchange cycle was infrequently or water exchange volume decrease respectively. There were no significant effects of self-pollution on survival rate but on relative growth. Ammonia nitrogen and pH were predominant factors which affects growth of larvae under self-pollution. EC 5 of total ammonia was 0.18 mg/L for relative growth of the larvae, with unionized ammonia (UIA) of 0.004 mg/L, EC 10 of 0.307 mg/L and UIA of 0.007 mg/L. There were significant effects of decrease and frequent fluctuation in pH value on relative weight gain. However, growth rate was improved by moderate high pH by Na2CO3 addition. It is recommends that total ammonia act as an indicator of recirculation aquaculture system.
杨凤, 雷衍之, 王仁波, 刘继承, 李萍, 周艳华. 皱纹盘鲍自污染及其对幼鲍生长及成活率的影响[J]. 大连海洋大学学报, 2003, 18(1): 1-6.
YANG Feng, LEI Yan-zhi, WANG Ren-bo, LIU Ji-cheng, LI Ping, ZHOU Yan-hua. Self-pollution caused by Haliotis discus hannai Ino and effects of the self-pollution on growth and survival rate of the larvae. Journal of Dalian Ocean University, 2003, 18(1): 1-6.