Ca^(2+)、Mg^(2+)对长毛对虾(Penaeus penicillatus Alcock)仔虾生长和成活率的影响

Influences of Ca^(2+) and Mg^(2+)on the Ratioof Growth and Survival in Post Larvaeof Penaeus penicillatus Alcock

研究了Ca^(2+)和Mg^(2+)对长毛对虾仔虾生长和成活率的影响,实验结果表明:盐场水库水体中Ca^(2+)和Mg^(2+)质量浓度及它们之间的比例是影响长毛对虾(Penaeus penicillatus Alcock)仔虾生长和成活率的重要因素;当水体中Mg^(2+)质量浓度为877.8mg/l,Ca^(2+)含量为278.7-292.6mg/l,并且Mg^(2+)/Ca^(2+)=3.00-3.15/1时长毛对虾仔虾生长发育最佳。

Influences of Ca + and Mg2+ on the ratio of growth and survival in post larvae of Penaeus penicillatus Alcock were studied. The results showed that the concentration of Ca2+ , Mg2+ and the ratio between Ca2+ and Mg2+ in the salting water were the important factors to interfere in the rates of growth and survival in post larvae of Penaeus penicillatus. The post larvae growth and survival rates of Penaeus peni-cillatus reached the best-level when the concentration of Mg2 + was 877. 8mg/1, the concentration of Ca2 + was 278.7 - 292. 6mg/1 and the ratio between Mg2+ and Ca2 + was 3.00 - 3.15/1.