• 关键词：草鱼  孵化率  卵黄囊水肿  管状心脏

• 基金项目：

• 张甫英
• 中国科学院水生生物研究所, 武汉

• 周永欣
• 中国科学院水生生物研究所, 武汉

• 周仁珍
• 中国科学院水生生物研究所, 武汉

• 摘要：进行了金属和农药对草鱼不同发育阶段影响的试验。结果表明,对草鱼胚胎孵化率的影响,96h的EC₅₀值分别为:Cd²⁺0.078mg/L;Cu²⁺0.17mg/L;丙体六六六1.0mg/L;对硫磷1.0mg/L。畸形症状呈现出草鱼胚胎卵黄囊水肿,心脏发育受阻而形成管状心脏、胚体弯曲（弯体）等。草鱼的不同发育阶段对金属的敏感性存在着差异:Cd²⁺96h的LC₅₀值,胚胎为0.1—0.5mg/L;10日龄

• Abstract：The effects of Cd, Cu,BHC and parathion on hatching rate of grass carp (Ctenopharyngodon idellus) were evaluated. The results indicated that the 96-hour EC50 were 0.078 mg/L for Cd, 0.17 mg/L for Cu, 1.0 mg/L for both BHC and parathion. The teratological symptoms appeared included kyphosis, yolk sac hydrops and tubular heart.The sensitivities of the fish at different development stages were also found to be different. The 96-hour LC₅₀ were 0.1-0.5mg Cd/L and 0.3-0.5 mg Cu/L for embryo, 0.34 mg Cd/L and 0.11 mg Cu/L for 10 days fry and 8 mg Cd/L and 0.59 mg Cu/L for 120 days juvenile grass carp, respectively.

• Key words：cadmium  copper  BHC  parathion  grass carp  toxicity.

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