Saska Pavel, Skuhrovec Jiří, Lukáš Jan, Chi Hsin, Tuan Shu-Jen, Honěk Alois
Crop Research Institute, Group Functional Diversity of Invertebrates and Plants in Agro-Ecosystems, Drnovská 507, Prague 6 - Ruzyně, 161 06 Czech Republic.
National Chung Hsing University, Department of Entomology, 250 Kuo-Kuang Rd., Taichung, 40227, Taiwan, Republic of China.
Sci Rep. 2016 Jun 15;6:27801. doi: 10.1038/srep27801.
Glyphosate is the number one herbicide in the world. We investigated the sub-lethal effects of this herbicide on the aphid Metopolophium dirhodum (Walker), using an age-stage, two-sex life table approach. Three concentrations of the herbicide (low - 33.5, medium - 66.9 and high - 133.8 mmol dm(-3) of active ingredient) and distilled water as the control were used. The LC50 of the IPA salt of glyphosate on M. dirhodum was equivalent to 174.9 mmol dm(-3) of the active ingredient (CI95: 153.0, 199.0). The population parameters were significantly negatively affected by herbicide application, and this negative effect was progressive with the increasing concentration of the herbicide. A difference of two orders of magnitude existed in the predicted population development of M. dirhodum between the high concentration of the herbicide and the control. This is the first study that comprehensively documents such a negative effect on the population of an herbivorous insect.
草甘膦是世界上使用量第一的除草剂。我们采用年龄-阶段两性生命表方法，研究了这种除草剂对麦长管蚜（Walker）的亚致死效应。使用了三种浓度的除草剂（低浓度 - 活性成分33.5 mmol dm(-3)、中浓度 - 66.9 mmol dm(-3)、高浓度 - 133.8 mmol dm(-3)）以及蒸馏水作为对照。草甘膦异丙胺盐对麦长管蚜的LC50相当于活性成分174.9 mmol dm(-3)（置信区间95%：153.0，199.0）。施用除草剂对种群参数有显著的负面影响，且这种负面影响随着除草剂浓度的增加而加剧。在高浓度除草剂处理组和对照组之间，麦长管蚜预测种群发展存在两个数量级的差异。这是第一项全面记录除草剂对植食性昆虫种群产生这种负面影响的研究。
