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首页> 外文期刊>Journal of Economic Entomology >Acephate Resistance in Populations of the Tarnished Plant Bug (Heteroptera: Miridae) From the Mississippi River Delta
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Acephate Resistance in Populations of the Tarnished Plant Bug (Heteroptera: Miridae) From the Mississippi River Delta

机译：密西西比河三角洲失去光泽的植物臭虫（后翅目：Mir科）的种群中对乙酰乙酸的抵抗

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摘要

A monitoring program that used a glass-vial bioassay to detect acephate resistance in populations of the tarnished plant bug, Lygus lineolaris (Palisot de Beauvois) (Heteroptera: Miridae), was carried out with weed-collected populations from 20 sites in the delta of Arkansas, Louisiana, and Mississippi. Additional results from field tests using recommended rates of formulated acephate in cotton showed that plant bug populations with resistance ratio (RR_(50)) values >3.0 for acephate (from the glass-vial bioassay) would be difficult to control in the field. Over a 4-yr-period from 2001 through 2004, only one population tested with the glass-vial bioassay was found with an RR_(50) value >3.0 for acephate, but six populations having RR_(50) values >3.0 were found in the delta in 2005. In fall 2005, an additional 10 populations from the hill region (the cotton growing areas outside the delta) were tested and four of these populations had RR_(50) values >3.0. The number of populations with RR_(50) values >3.0 increased to five of 10 and 18 of 20 in the hills and delta, respectively, in fall 2006. Laboratory tests using resistant populations found that resistance to acephate was not sex-linked and the alleles controlling the resistance were semidominant in nature. Because of the large increase in resistant populations and the nature of the resistance found in this study, along with control problems experienced by growers in 2006, entomologists in the mid-South strongly recommended that alternation of insecticide classes in field treatments for plant bug control be used by growers in 2007. This control strategy probably helped control plant bugs in the hills of MS where plant bug pressure was low in 2007, and only one population was found in the fall with an RR_(50) value >3.0. Plant bug pressure was very high in many parts of the delta in 2007, and 15 of the 20 populations tested in the fall had RR_(50) values >3.0. In one field test in cotton, a population with multiple resistance was tested and not effectively controlled in treatments using recommended rates of carbamate, organophosphate, and pyrethroid insecticides. Alternation of insecticide classes may not work very well when populations are present that are resistant to three of the four main classes of cotton insecticides. New insecticides in different classes are badly needed for control of tarnished plant bugs in cotton in the mid-South.
机译：进行了一个监测程序，该程序使用玻璃小瓶生物测定法检测了失去光泽的植物臭虫Lygus lineolaris（Palisot de Beauvois）（Heteroptera：Miridae）种群中的乙酰乙酸抗性，该种群是从三角洲的20个地点收集的杂草阿肯色州，路易斯安那州和密西西比州。使用建议的棉花乙酰甲酸盐比例推荐的田间试验得出的其他结果表明，在田间难以控制乙酰甲虫的抗药性比率（RR_（50））值> 3.0的植物小虫种群（通过玻璃小瓶生物测定法）。在2001年至2004年的4年中，仅发现一个用玻璃小瓶生物测定法测试的人群的乙酰甲胺磷RR_（50）值> 3.0，但发现6个种群的RR_（50）值> 3.0。 2005年为三角洲。2005年秋季，对来自丘陵地区（三角洲以外的棉花种植区）的另外10个种群进行了测试，其中四个种群的RR_（50）值> 3.0。 RR_（50）值> 3.0的种群数量在2006年秋季分别增加到丘陵和三角洲中的10人中的5人和20人中的18人。使用抗性种群的实验室测试发现，对乙酰甲胺磷的抗性与性别无关，控制抗性的等位基因本质上是半显性的。由于本研究中发现的抗药性种群大量增加且具有抗药性，再加上种植者在2006年遇到的控制问题，中南部的昆虫学家强烈建议在田间控制植物病虫害的处理中交替使用杀虫剂。在2007年由种植者使用。这种控制策略可能有助于控制MS小山中的植物臭虫，而MS小山在2007年的植物臭虫压力较低，秋天只发现了一个种群，其RR_（50）值> 3.0。 2007年，三角洲许多地区的植物臭虫压力非常高，秋天测试的20个种群中有15个的RR_（50）值> 3.0。在棉花的一次田间测试中，测试了具有多重抗药性的种群，使用推荐的氨基甲酸酯，有机磷酸盐和拟除虫菊酯类杀虫剂的处理量未对种群进行有效控制。当种群对四种主要的棉花杀虫剂中的三种有抗药性时，交替使用杀虫剂可能效果不佳。迫切需要各种不同类别的新型杀虫剂来控制南部中部棉花的锈病。

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