中文摘要：BT毒素对水生生态系统的非靶标效应是改进转基因植物（特别是种植在水生生态系统附近的作物）现有评价方法的重要因素。本文在两个生长季节进行了分解实验来确定施用和不施用杀虫剂的转Bt基因水稻枯落物对田间沟渠的小型底栖生物群落的影响。研究发现，转Bt基因和非转基因水稻的枯落物对小型底栖生物群落组成的影响没有显著差异；施用和不施用杀虫剂的水稻枯落物对小型底栖生物丰度的影响差异较大，且杀虫效果与水稻品种有关；在田间沟渠中没有检测出BT毒素。另外，无论是否施用杀虫剂，转Bt基因和非转基因水稻的叶片分解和养分含量均相当。研究结果表明，转Bt基因水稻枯落物对田间沟渠的小型底栖生物群落组成没有影响，但在大规模的水生生态系统中需要考虑转基因枯落物对自然界的慢性持续性影响。
外文摘要：BACKGROUND：The non-target effect of Bacillus thuringiensis (Bt) toxins in aquatic ecosystems is crucial to improve the present assessment of Bt-transgenic plants, particularly where crops are cultivated near aquatic ecosystems. We conducted decomposition experiments during two growing seasons to determine the effects of Bt-transgenic rice litter with and without insecticide application on the meiobenthos communities in a field ditch. RESULTS：The community composition of meiobenthos colonised on leaf litter was not significantly different between Bt and non-Bt rice. The abundance of meiobenthos colonising leaves differed between insecticide application and control, and this insecticide effect interacted with rice type. No Bt toxin was detected in field ditch water. Leaf decomposition and nutrient content were comparable for both Bt and non-Bt rice with or without insecticide application. CONCLUSION：Bt-transgenic rice litter had no effect on the meiobenthos community composition in field ditches, but the chronic persistence of transgenic litter in nature needs to be taken into account at large scales in aquatic ecosystems. 
外文关键词：aquatic ecosystems; Bt-transgenic rice; meiobenthos community; non-target effects; plant litter
作者：Liu, Yongbo; Jiang, Wanxiang; Liang, Yuyong; 等
作者单位：Chinese Res Inst Environm Sci
期刊名称：PEST MANAGEMENT SCIENCE
期刊影响因子：2.811
出版年份：2017
出版刊次：6
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