The feeding behavior and life history changes in imidacloprid-resistant Aphis gossypii glover (Homoptera: Aphididae)
The feeding behavior and life history changes in imidacloprid-resistant Aphis gossypii glover (Homoptera: Aphididae)
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抗吡虫啉棉蚜取食行为及生活史变化（同翅目：蚜科）
DOI：
10.1002/ps.5653
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发表时间：
2019-11-15
影响因子：
4.1
通讯作者：
Cui, Li
中科院分区：
文献类型：
--
作者：
Wang, Li;Wang, Qinqin;Cui, Li
背景吡虫啉（Imidacloprid，IMI）是防治棉蚜（Aphis gossypii格洛弗）的主要烟碱类杀虫剂。但在A.棉。本文研究了抗IMI的黑腹锦鸡儿的摄食行为和生活史变化。棉花属结果nAChR β 1亚基点突变（R81 T）的耐药人群显示IMI耐药率为58.12。这种抗IMI的A.棉蚜在寻找合适的取食位置时变得更加活跃。与易感人群相比，他们产生了更多的细胞间质外体探针通路事件（C）。此外，两个蚜虫种群的探测和取食行为显着改变IMI。韧皮部摄取（E2）的持续时间显着延长IMI处理的植物（WDI：208.70 +/- 17.38分钟）比对照植物（WDI：133.80 +/- 16.37分钟）IMI抗性蚜虫。然而，IMI在统计上降低了易感蚜虫从韧皮部寻找和取食的能力。经IMI处理的敏感蚜虫韧皮部相关活动的数量和持续时间均显著减少。此外，抗性种群表现出1.36的相对适合度增加。抗IMI成虫的生殖力显著高于感病成虫。这种差异也导致了IMI抗性A的净繁殖率（R-0）的增加。棉花属结论：吡虫啉能更迅速、更有效地诱导抗IMI菌株的韧皮部取食。对敏感棉蚜的取食有显著的抑制作用。棉花属因此，对IMI的抗性可以刺激取食和繁殖，从而引起种群暴发，使抗IMI的A.棉花更有挑战性。(c)2019化学工业协会
BACKGROUND Imidacloprid (IMI) is a major neonicotinoid insecticide used to control Aphis gossypii Glover. However, resistance to IMI developed rapidly in A. gossypii. The feeding behavior and life history changes associated with IMI resistance were studied in A. gossypii. RESULTS The resistant population with a point mutation (R81T) in the nAChR beta 1 subunit showed an IMI resistance ratio of 58.12. This IMI-resistant A. gossypii became more active in finding an appropriate position for feeding. They made more intercellular apoplastic stylet pathway events (C) than the susceptible population. Moreover, the probing and feeding behavior of two aphid populations were dramatically altered by IMI. The phloem ingestion (E2) duration was significantly longer for IMI-resistant aphids on IMI-treated plants (WDI: 208.70 +/- 17.38 min) than on control plants (WDI: 133.80 +/- 16.37 min). However, IMI statistically reduced the ability of susceptible aphids to find and feed from the phloem. The number and duration of phloem-related activities were sharply decreased for the susceptible aphids treated with IMI. In addition, the resistant population showed an increased relative fitness of 1.36. The fecundity of IMI-resistant adults was dramatically higher than that of the susceptible population. This difference also led to an increase in the net reproductive rate (R-0) for the IMI-resistant A. gossypii. CONCLUSIONS Imidacloprid provoked phloem-feeding more rapidly and effectively in IMI-resistant A. gossypii, but significantly suppressed the feeding of susceptible A. gossypii. Therefore, the resistance to IMI can result in stimulated feeding and fecundity and subsequent population outbreaks, which make the control of IMI-resistant A. gossypii more challenging. (c) 2019 Society of Chemical Industry