在恒温(28±0.5℃)和充气条件下,研究了Hg--(2+)、Cd--(2+)、zn--(2+)、Mn--(2+)对日本对虾仔虾的急性致毒效应.结果表明,Hg--(2+)、Cd--(2+)、zn--(2+)、Mn--(2+)对日本对虾仔虾的毒性顺序为Hg--(2+)>Cd--(2+)>zn--(2+)>Mn--(2+).根据重金属对日本对虾仔虾的96HlC_(50)值计算的Hg--(2+)、Cd--(2+)、zn--(2+)、Mn--(2+)的安全浓度分别为0.0012、0.0342、0.0449、0.0950Mg/dM--3.The effects of acute toxicity of Hg2+, Cd2+, Zn2+ , Mn2+ under the condition of aeration postlarvae of Penaeus japonicus Bate have been studied at the temperature of 28±0.5℃.The results show that the order of toxicity of Hg2+, Cd2+ , Zn2+, Mn2+for postlarvae is Hg2+>Cd2+ >Zn2+>Mn2+.The "safe level" of Hg2+, Cd2+ , Zn2+ , Mn2+ to the larvae is 0.0012, 0.0342, 0.0449, 0.0950 mg/dm3 on the basis of the 96h LC50 value calculated for postlarvae
