2种除草剂联合胁迫下日本青鳉的逐级行为响应  

The Stepwise Behavioral Responses of the Japanese Medaka under the Joint Stress of Two Herbicides

作　　者：刘勇[1,2] 张高生[1] 陈琳琳[1] 任宗明[1] 付荣恕[2] 王子健[3] 赵建平[4] 高占国[4] 翁燕波[4] 

机构地区：[1]中国科学院烟台海岸带研究所,烟台264003 [2]山东师范大学生命科学学院,济南250014 [3]中国科学院生态环境研究中心,北京100085 [4]宁波市环境监测中心,宁波315012

出　　处：《生态毒理学报》2010年第1期32-37,共6页Asian Journal of Ecotoxicology

基　　金：国家水体污染控制与治理科技重大专项(No.2009ZX07527-002-06);环保公益性行业科研专项(No.200809147)

摘　　要：探讨了日本青鳉在两种除草剂阿特拉津和百草枯联合暴露下的逐级行为响应,采用水质安全在线生物预警系统(BEWs)记录行为强度数据,分析不同暴露浓度、不同暴露时间日本青鳉的行为响应.10、5、1和0.1TU的暴露浓度下行为反应时间分别为:0.74、7.7、29.4和42.2h,而每个浓度不同配比之间行为反应时间差异明显.结果表明:在两种除草剂的暴露下,日本青鳉的逐级行为响应既受化合物浓度高低的影响,又受暴露时间的影响,而且每个浓度两种药物不同配比暴露下的青鳉鱼的逐级行为响应基本一致,每个浓度不同配比之间行为反应时间差异明显,即两种作用机制不同的除草剂对日本青鳉的行为毒性是协同作用.In this study,the stepwise behavioral responses of the Japanese medaka（Oryzias latipes）under the joint stress of two herbicides（Atrazine and Paraquat）were discussed.BEWs was used to record the data of behavior strength to analyze the behavioral responses of Japanese medaka.The evident difference of the behavioral responses time were：0.74、 7.7、29.4 and 42.2h,and evident difference of the behavioral responses time was detected.The results suggested that the stepwise behavioral responses of the Japanese medaka were affected by both the chemical concentration and exposure time.And the evident difference of the behavioral response time was detected.The stepwise behavioral responses in different proportion of the two herbicides were almost the same as each other.It proved that the toxicity effects of the joint stress of the two herbicides on the stepwise behavioral responses of Japanese medaka were synergistic.

关 键 词：除草剂 联合作用 日本青鳉 逐级行为响应 

分 类 号：X171.5[环境科学与工程—环境科学]