引用本文:	王召根,吴洪喜,王瑶华,周朝生,陈肖肖.Cd²⁺和Cu²⁺对泥蚶的急性毒性和联合毒性试验[J].海洋科学,2014,38(8):16-20.

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Cd²⁺和Cu²⁺对泥蚶的急性毒性和联合毒性试验
王召根^1,2, 吴洪喜^2,3, 王瑶华^1,2, 周朝生^2,3, 陈肖肖^2,3
1.上海海洋大学水产与生命学院;2.浙江省海洋水产养殖研究所;3.浙江省近岸水域生物资源开发与保护重点实验室

摘要:

为了解重金属Cd²⁺和Cu²⁺对泥蚶的毒害程度和泥蚶对重金属Cd²⁺和Cu²⁺的解毒能力, 用毒理学实验方法研究了Cd²⁺和Cu²⁺对泥蚶(Tegillarca granosa)的急性毒性和联合毒性效应。结果表明: Cd²⁺、Cu²⁺对泥蚶的96 h 半致死质量浓度分别为6.189、0.460 mg/L; 安全质量浓度分别为0.062、0.005 mg/L;相对毒性Cu²⁺>Cd²⁺。在1︰ 1 毒性单位的联合作用下, Cd²⁺和Cu²⁺对泥蚶96 h 的半致死质量浓度分别为1.984、0.147 mg/L; 安全质量浓度分别为0.020、0.001 mg/L。2 种重金属离子的联合毒性大于任一重金属离子的毒性, 联合毒性表现为协同作用。

关键词: Cd²⁺ Cuv 泥蚶(Tegillarca granosa) 急性毒性联合毒性

DOI：10.11759/hykx20130524001

分类号:

基金项目:浙江省近岸水域生物资源开发与保护重点实验室人才培养基金项目(2010F30003); 上海海洋大学研究生科研基金项目(A-2500-11-0013)

Acute toxic and joint toxic experiments of Cd²⁺ and Cu²⁺ on Tegillarca granosa

Abstract:

Acute toxicity and joint toxicity of Cd²⁺ and Cu²⁺ on Tegillarca granosa were studied using toxicological methods. The result indicated that Cu²⁺ had a stronger toxicity than Cd²⁺. The median lethal concentrations (LC₅₀) of Cd²⁺ and Cu²⁺ at 96 hours to the T. granosa were 6.189 mg/L and 0.460 mg/L respectively. The safe concentrations for T. granosa were 0.062 mg/L and 0.005 mg/L for Cd²⁺ and Cu²⁺, respectively. Additive index method was used to evaluate the joint toxic effects of Cd²⁺ and Cu²⁺ on the T. granosa and a combinative toxicity was observed. The median lethal concentrations (LC₅₀) of Cd²⁺ and Cu²⁺ at 96 hours to the T. granosa were 1.984 mg/L and 0.147 mg/L, respectively. The safe concentrations for T. granosa were 0.020 mg/L and 0.001 mg/L for Cd²⁺ and Cu²⁺, respectively. The joint toxicity of Cd²⁺ and Cu²⁺ on T. granosa was stronger than the individual toxicities, suggesting a synergetic action.

Key words: Cd²⁺ Cu²⁺ Tegillarca granosa acute toxicity joint toxicity