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首页> 外文会议>5th International Workshop on Management of the Diamondback Moth and Other Crucifer Insect Pests(第五届小菜蛾及其他十字花科蔬菜害虫治理国际研讨会) >Monitoring,characterization and management of diamondback moth resistance to spinosad and indoxacarb
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Monitoring,characterization and management of diamondback moth resistance to spinosad and indoxacarb

机译：小菜蛾对多杀菌素和茚虫威的抗药性监测，鉴定和管理

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Spinosad and indoxacarb are two different classes of insecticides with novel modes of action introduced in the late 1990s. In some areas such as Hawaii. They were the most important insecticides to control the diamondback moth,PluteUa xylosteUa(L.),and were used in area-wide insecticide resistance management rograms.Populations of P.xylostella were collected from fields of crucifer vegetables in the USA and Mexico from 1 999 to 2005 for baseline susceptibility tests and resistance monitoring to both new insecticides.Most populations were susceptible to both insecticides,but resistance to spinosad extended from Hawaii(2000)to Georgia(2001)and California(2002)in the USA and then in Mexico(2005).Several populations collected from Hawaii in 2003.2005 showed varying 1evels of resistance to indoxacarb.Further studies on stability, fitness cost,inheritance,and mechanism of P.xylostella resistance to spinosad and indoxacarb were conducted after the field-derived resistant colonies were obtained. Interstrain complementation tests for allelism showed that there is a major recessive lOCUS for resistance to spinosad shared by three P.xylostella populations from Hawaii,Georgia and California.When spinosad,indoxacarb and Bacillus thuringiensis (Bt)were used simultaneously in a mosaic fashion in a greenhouse cage experiment with P.xylostella,the resistance development to each insecticide was more rapid compared to when these products were used in a rotation every one or three generations of P.xylostella. This study illustrates a useful example of how a proactive monitoring program can be developed prior to the spread of insect resistance to a new insecticide.Regular and proactive monitoring provided industry and extension personnel the necessary information to help growers switch products before a major economic loss of the crop.A more sophisticated resistance management program that employs the thoughtful and cooperative rotation of products on an area-wide basis -would enhance the longevity of each product even more.
机译：Spinosad和茚虫威是两种不同类别的杀虫剂，它们在1990年代后期引入了新颖的作用方式。在某些地区，例如夏威夷。它们是控制小菜蛾（PluteUa xylosteUa（L。））的最重要的杀虫剂，并用于整个地区的杀虫剂抗性管理方案中。小菜蛾的种群是从美国和墨西哥的十字花科蔬菜田中采集的，数量为1从999年到2005年进行基线敏感性测试和对这两种新杀虫剂的抗药性监测。大多数人群对这两种杀虫剂均敏感，但是对多杀菌素的抗药性从夏威夷（2000）扩展到乔治亚州（2001）和加利福尼亚（2002）在美国再到墨西哥（2005）.2003.2005年从夏威夷采集的几个种群显示出对茚虫威的抗药性各不相同的1个水平。获得。品系间互补试验表明，夏威夷，格鲁吉亚和加利福尼亚的三个小菜蛾种群共有一个主要的隐性lOCUS抵抗多杀菌素。当多杀菌素时，吲哚威威和苏云金芽孢杆菌（Bt）同时以镶嵌方式使用。用小菜蛾进行温室笼试验，与每隔一或三代小菜蛾轮换使用这些产品相比，对每种杀虫剂的抗药性发展更快。这项研究说明了在将昆虫抗药性传播给新的杀虫剂之前如何制定主动监控程序的有用示例。定期和主动监控为行业和推广人员提供了必要的信息，以帮助种植者在经济遭受重大损失之前转换产品。一个更复杂的抗性管理程序，在整个区域内采用周到且合作的产品轮换方案，将进一步提高每种产品的寿命。

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