Resistance of greenhouse, laboratory, and native populations of western flower thrips to spinosad
Resistance of greenhouse, laboratory, and native populations of western flower thrips to spinosad
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DOI：
10.21273/hortsci.40.1.146
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发表时间：
2005-02-01
期刊：
影响因子：
1.9
通讯作者：
Cloyd, RA
中科院分区：
文献类型：
--
作者：
Loughner, RL;Warnock, DF;Cloyd, RA
本文从温室、实验室和当地采集西部花蓟马(Frankliniella occidentalis （Pergande)（蓟翅目：Thripidae）），对其对杀虫剂spinosad的抗性进行了评价。德兰士瓦雏菊（Gerbera jamesonii H. Bolus ex Hook）单株茎。F.)接种于9个蓟马种群中1个种群的25只成虫，并保持在隔离室中。处理不喷、水喷、spinosad按半标率（0.41 mL(.)）L(-1))和spinosad （0.81 mL(.)）L(-1))施于花上。治疗3天后，记录活蓟马和死蓟马的数量。对照处理恢复的蓟马明显多于皂苷处理。蓟马的存活率因处理方法和昆虫数量而异。根据比值比分析，恢复活蓟马的可能性；在两种spinosad处理下，IL-GH1（伊利诺伊州温室）群体比NV-N1（内华达州本地）参考群体对spinosad的抗性更高，表明IL-GH1群体对spinosad有抗性。IL-GH1种群采集于定期喷洒spinosad的温室，NV-N1种群采集于内华达州Incline村。在没有接触过spinosad的野花上。这是记录在案的蓟马种群中首次出现棘糖素耐药性。与NV-N1参考种群相比，从实验室或当地非农业环境中收集的种群均未显示出对spinosad抗性的证据。对一种具有新作用模式的杀虫剂（如spinosad）的抗性表明，有必要轮换使用杀虫剂并实施管理西部花蓟马的替代方法。使用的化学名称：spinosad包括spinosin A和spinosin D（保存SC）。
Western flower thrips (Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae)] collected from greenhouse, laboratory, and native populations were evaluated for resistance to the insecticide spinosad. Individual cut stems of transvaal daisy (Gerbera jamesonii H. Bolus ex Hook. f.) were inoculated with 25 adults from 1 of 9 thrips populations and maintained in isolation chambers. Treatments of no spray, water spray, spinosad at one-half label rate (0.41 mL(.)L(-1)) and spinosad at the recommended label rate (0.81 mL(.)L(-1)) were applied to the flowers. Three days after treatment, the number of live and dead thrips was recorded. Significantly more thrips were recovered from the control treatments than the spinosad treatments. Thrips survival varied by treatment and insect population. Based on an odds ratio analysis, the likelihood of recovering live thrips; was greater in the IL-GH1 (Illinois greenhouse) population than in the NV-N1 (Nevada native) reference population for both spinosad treatments, suggesting resistance to spinosad in the IL-GH1 population. The IL-GH1 population was collected from a greenhouse regularly sprayed with spinosad whereas the NV-N1 population was collected in Incline Village, Nev., on wildflowers with no history of exposure to spinosad. This is the first documented indication of spinosad resistance in a thrips population. In comparison to the NV-N1 reference population, none of the populations collected from laboratory or native nonagricultural environments exhibited evidence of resistance to spinosad. Resistance to an insecticide with a novel mode of action, such as spinosad, indicates the necessity of rotating insecticides and implementing alternative methods of managing western flower thrips. Chemical names used: spinosad including spinosyn A and spinosyn D (Conserve SC).