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| Cd2+和Cu2+对泥蚶的急性毒性和联合毒性试验 |
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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
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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
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| 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 |
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| 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) |
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| Acute toxic and joint toxic experiments of Cd2+ and Cu2+ on Tegillarca granosa |
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| 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 |