The bird‐cherry oat aphid (Rhopalosiphum padi) is a global pest, attacking most cereal crops including barley, wheat, oats and triticale. The aphids cause yield losses through direct feeding damage and the transmission of plant viruses. In Australia, feeding injury can reduce cereal yields by 6%, with the damage caused by aphid‐vectored viruses reducing the yield of cereal crops by up to 30%. Aphid control in these crops is achieved almost exclusively with insecticides, and there is growing concern surrounding insecticide resistance evolution in multiple aphid species. In this study, nine field populations of R. padi were collected from localities representing the major grain growing regions of Australia. Toxicity data against four insecticides (dimethoate, alpha‐cypermethrin, pirimicarb and imidacloprid) was generated for each aphid population. This revealed little differences in population responses for three of these insecticides. For alpha‐cypermethrin, a widely used insecticide in Australia, there were significant differences between several populations. These data will be important for future monitoring of insecticide responses of R. padi and highlight the impending pest management challenges growers could encounter in Australia.

中文翻译：

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鸟樱桃燕麦蚜虫Rhopalosiphum padi（Hemiptera：Aphididae）对四种杀虫剂的敏感性

鸟樱桃燕麦蚜虫（Rhopalosiphum padi）是一种全球性害虫，侵袭了大多数谷物作物，包括大麦，小麦，燕麦和黑小麦。蚜虫通过直接饲喂损害和植物病毒的传播而造成产量损失。在澳大利亚，进食伤害可导致谷物产量降低6％，而蚜虫载体病毒造成的损害会使谷物作物的产量降低多达30％。这些农作物中的蚜虫防治几乎完全是通过杀虫剂来实现的，围绕多种蚜虫物种的杀虫剂抗性演变，人们越来越关注。在这项研究中，R。padi的9个野外种群从代表澳大利亚主要谷物产区的地方收集。针对每个蚜虫种群生成了针对四种杀虫剂（乐果，α-氯氰菊酯，吡虫威和吡虫啉）的毒性数据。这表明这三种杀虫剂在种群反应方面几乎没有差异。对于在澳大利亚广泛使用的杀虫剂α-氯氰菊酯，几个种群之间存在显着差异。这些数据对于将来监测R. padi的杀虫剂反应非常重要，并突出了澳大利亚种植者可能遇到的有害生物管理挑战。