• 关键词：农药毒性  土壤动物  生态毒理效应  持久性有机污染物  环境内分泌干扰物

• 基金项目：辽宁省教育厅项目(No.05L196)

• 史雅娟
• 中国科学院生态环境研究中心, 北京 100085

• 王昕
• 中国环境监测总站, 北京 100029

• 吕永龙
• 中国科学院生态环境研究中心, 北京 100085

• 郭非凡
• 中国农业大学资源环境学院, 北京 100094

• 摘要：采用人工土培养法,通过急性和亚急性暴露实验,研究了DDT和三氯杀螨醇对蚯蚓(赤子爱胜蚓)的存活、生长和繁殖能力的影响.结果表明,DDT在急性暴露期对蚯蚓存活具有一定的毒性,其14d的LC₅₀为484.76mg·kg^-1;三氯杀螨醇对蚯蚓的存活基本没有影响(LC₅₀>4000mg·kg^-1).DDT在急性和亚急性暴露期(10～28d)对蚯蚓的生长都具有显著的抑制作用(p<0.05),三氯杀螨醇在急性期对蚯蚓的生长没有抑制作用(p>0.05),在亚急性期对蚯蚓生长的影响尚不确定.DDT和三氯杀螨醇都显著抑制蚯蚓的繁殖能力(p<0.05).

• Abstract：The artificial soil method was adopted to compare the toxicological effects of DDT and dicofol on earthworms after both acute and subtle exposure. The results showed that DDT had a lethal effect on earthworms, with LC_{50(14 d)}=484.76 mg·kg^-1, while dicofol had no obvious lethal effect on earthworms with LC₅₀ >4000 mg·kg^-1. DDT significantly inhibited the growth of earthworms after both acute and subtle exposure (p<0.05). Dicofol had no inhibition to the growth of earthworms in acute test (p>0.05), and uncertain inhibition to the growth in the subtle test. Both DDT and dicofol significantly inhibited the reproduction ability of earthworms (p<0.05). The research results provided a good indication for assessing soil pollutions of both DDT and dicofol and eco-toxicity of pesticides.

• Key words：pesticide toxicity  soil animal  eco-toxological effects  persistent organic pollutants  environmental endocrine disruptors

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