绝对图塔
恶二唑虫
生物
联苯菊酯
剑鱼科
采叶机
阿维菌素
多杀菌素
溴虫腈
毒理
有害生物分析
生殖器鳞翅目
农学
杀虫剂
生态学
植物
作者
Pablo Costa Gontijo,Marcelo Coutinho Picanço,E.J.G. Pereira,Júlio Cláudio Martins,Mateus Chediak,R. N. C. Guedes
摘要
Abstract Insecticide resistance is frequently associated with field control failure, but such an assessment of its likelihood seldom occurs. This phenomenon is a potential cause of the control failure of the tomato leaf miner Tuta absoluta ( Lepidoptera : Gelechiidae ); therefore we surveyed insecticide resistance as the control failure likelihood for a duration of 7 years in 20 field populations of this species. The insecticide label rate was used as the discriminating concentration, and the minimum efficacy threshold required for insecticides in Brazil (i.e. 80% efficacy) was the targeted efficacy. The spatial and temporal variations of the control failure likelihood were also assessed, as was the potential influence of land topography for the area‐wide pattern observed. Most populations of T. absoluta were susceptible to abamectin, chlorfenapyr and spinosad and not to bifenthrin, triflumuron and teflubenzuron. The indoxacarb susceptibility varied in space and time. Spatial dependence was observed for abamectin and indoxacarb. The control failure likelihood of T. absoluta was higher for bifenthrin, triflumuron and teflubenzuron. A flat topography and the wind direction may favour the spread of the control failure likelihood and should be considered in designing pest management programs for T. absoluta .
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