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首页> 美国卫生研究院文献>Journal of Insect Science >Patterns of Tarnished Plant Bug (Hemiptera: Miridae) Resistance to Pyrethroid Insecticides in the Lower Mississippi Delta for 2008–2015: Linkage to Pyrethroid Use and Cotton Insect Management
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Patterns of Tarnished Plant Bug (Hemiptera: Miridae) Resistance to Pyrethroid Insecticides in the Lower Mississippi Delta for 2008–2015: Linkage to Pyrethroid Use and Cotton Insect Management

机译：2008-2015年密西西比河下游三角洲对拟除虫菊酯杀虫剂的抗性消失模式：与拟除虫菊酯的使用和棉花昆虫管理的联系

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Populations of tarnished plant bug, Lygus lineolaris (Palisot de Beauvois) (Hemiptera: Miridae), from the Lower Mississippi Delta regions of Arkansas, Louisiana, and Mississippi were evaluated from 2008 through 2015 for susceptibility to pyrethroid insecticides using a diagnostic-dose assay with permethrin. Resulting data add to the compilation of pyrethroid susceptibility data carefully tracked in this pest since 1994 and provide continuing evidence of high frequencies of pyrethroid resistance in field populations of the tarnished plant bug. Resistance levels are variable, and some populations remain susceptible suggesting practical value in the continued use of the diagnostic-dose assays prior to pyrethroid treatments. Recent studies with dose–response models suggest that levels of pyrethroid resistance in some populations may still be evolving, with some populations requiring higher doses to reach levels of control comparable to those observed 10 yr ago. Concerns for frequent use of multiple classes of insecticides and possible selection for tarnished plant bugs with metabolic resistance mechanisms capable of detoxifying available insecticide chemistries warrant continued efforts to manage resistance in this important crop pest. Associations among measured pyrethroid resistance levels, published data on annual use of pyrethroid insecticides, and annual estimates of cotton insect losses and control costs were explored and summarized for the 8 yr of this investigation. Mortality of tarnished plant bugs at the diagnostic-dose of permethrin was negatively correlated with kilograms of pyrethroids applied per acre of harvested cropland.
机译：从2008年至2015年，使用诊断剂量测定法和分析法对来自密西西比河下游密西西比河三角洲地区，路易斯安那州和密西西比州的Ly虫（Lygus lineolaris（Palisot de Beauvois）（半翅目：Miridae））的种群进行了拟除虫菊酯类杀虫剂敏感性评估。氯菊酯。自1994年以来，对这种虫害中拟除虫菊酯药敏性数据的汇编进一步增加了所得数据，并提供了逐渐消失的已灭绝的植物虫的田间种群中对拟除虫菊酯抗药性的高频率的持续证据。抗药性水平是可变的，并且某些种群仍然易感，这表明在拟除虫菊酯治疗之前继续使用诊断剂量试验具有实用价值。最近关于剂量反应模型的研究表明，某些人群中拟除虫菊酯类药物的耐药性水平可能仍在发展，有些人群需要更高剂量才能达到与10年前观察到的水平相当的控制水平。人们担心经常使用多种杀虫剂，并可能选择具有能抵抗现有杀虫剂化学物质代谢能力的新陈代谢抗性机制的变色植物虫，因此需要继续努力管理这种重要农作物害虫的抗性。在本调查的8年中，对拟除虫菊酯抗药性水平，拟除虫菊酯类杀虫剂的年度使用公开数据以及棉花虫害损失和防治成本的年度估计之间的关系进行了探讨，并进行了总结。氯菊酯的诊断剂量下失去光泽的植物臭虫的死亡率与每英亩收获农田施用的拟除虫菊酯公斤呈负相关。

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