Cd^2+和Hg^2+对波纹龙虾的急性毒性  

Acute Toxicity of Cd^2+and Hg^2+to Salloped Spiny Lobster Panulirus homarus

作　　者：梁华芳[1] 卓宏标 廖永岩 洪桂鑫 温崇庆[1] LIANG Huafang;ZHUO Hongbiao;LIAO Yongyan;HONG Guixin;WEN Chongqing(Fisheries College, Guangdong Ocean University, Zhanjiang 524088, China;Guangxi Key Laboratory of Beibu Gulf Marine Biodiversity Conservation, Beibu Gulf University, Qinzhou 535011, China)

机构地区：[1]广东海洋大学水产学院,广东湛江524088 [2]北部湾大学,广西北部湾海洋生物多样性养护重点实验室,广西钦州535011

出　　处：《水产科学》2020年第3期420-424,共5页Fisheries Science

基　　金：广东省科技厅农业攻关项目(2013B020308009);广西北部湾海洋生物多样性养护重点实验室(钦州学院)开放基金资助项目(2015KB03);广东海洋大学科研项目(C16394).

摘　　要：采用毒理学方法,在水温28.0~29.0℃下于0.5 m^3的圆形玻璃钢桶中,用氯化镉和氯化汞配成不同质量浓度的Cd^2+和Hg^2+试验溶液,研究Cd^2+和Hg^2+对体质量49.10~52.10 g波纹龙虾的毒性,用直线内插法求得Cd^2+和Hg^2+的半致死质量浓度及安全质量浓度。试验结果显示,Cd^2+对波纹龙虾的24、48、72、96 h半致死质量浓度分别是2.5169、1.3378、1.0445、0.9500 mg/L,安全质量浓度为0.0095 mg/L;Hg^2+对波纹龙虾的24、48、72、96 h半致死质量浓度分别是0.0560、0.0333、0.0246、0.0227 mg/L,安全质量浓度为0.000227 mg/L。Hg^2+对波纹龙虾的毒性作用强于Cd^2+的毒性作用。Acute toxicity of heavy metals Cd^2+and Hg^2+prepared from cadmium chloride and mercury chloride to scalloped spiny lobster Panulirus homarus with body weight of 49.10—52.10 g was tested in a 0.5 m^3 round glass steel bucket at water temperature of 28.0—29.0°C by a toxicological method.The median lethal concentration(LC50)and safety concentrations(SC)of Cd^2+and Hg^2+were obtained by linear interpolation based on the relationship between mortality rates of shrimp and heavy metal doses.The LC50 value of Cd^2+in scalloped spiny lobster was found to be 2.5169 mg/L at 24 h,1.3378 mg/L at 48 h,1.0445 mg/L at 72 h and 0.9500 mg/L at 96 h,with the corresponding SC level of 0.0095 mg/L.The LC50 of Hg^2+in spiny lobster were 0.0560 mg/L at 24 h,0.0333 mg/L at 48 h,0.0246 mg/L at 72 and 0.0227 mg/L at 96 h,with SC of 0.000227 mg/L,indicating that metal Hg^2+was more toxic to scalloped spiny lobster than that of metal Cd^2+.

关 键 词：波纹龙虾 重金属离子 毒性 半致死质量浓度 安全质量浓度 

分 类 号：S968.22[农业科学—水产养殖]