Evaluation on Joint Acute Toxicity of Bata-Cypermethrin and Chlorpyrifos to Freshwater Protozoan Community

摘要：

The joint acute toxicity of chlorpyrifos and bata-cypermethrin on freshwater protozoan community was examined with the polyurethane foam unit method. Forty-eight-hour LC50 values were 8.72 mg/L for chlorpyrifos and 1.92mg/L for bata-cypermethrin in individual acute toxicity test. Our data indicated that the extent of toxic interactions of two insecticides showed synergism in 48h exposure. Additive Index (AI) was 2.2 associated to the joint acute toxicity test. In addition, the structure of protozoan community was simplified and the functional-trophic groups changed with the increasing concentration of insecticides. The species and population of Algivores(A) and Predators Raptors (P) reduced but Bactivoresdetrivores(B) became predominant relatively.

作者: Haijuan Xu Guoguang Liu Lixia Wang Liqing Zheng

作者单位: Guangdong Poison Control Center GDPCC Guangzhou, P.R.China College of environment science and engineering Guangdong University of Technology,GDUT Guangzhou, P. Northeast Institute of Geography and Agroecology Chinese Academy of Sciences, CAS Changchun, P.R.Chi College of Chemistry and Environmental Science Henan Normal University, HNNU Xinxiang, P.R.China

会议类型: 国际会议

会议名称: The 4th International Conference on Bioinformatics and Biomedical Engineering(第四届IEEE生物信息与生物医学工程国际会议 iCBBE 2010)

会议地点: 成都

会议语种:英文

页码: 1-4

在线出版日期: 2010-06-18（万方平台首次上网日期，不代表论文的发表时间）