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首页> 美国卫生研究院文献>other >Effect of Larvae Treated with Mixed Biopesticide Bacillus thuringiensis - Abamectin on Sex Pheromone Communication System in Cotton Bollworm Helicoverpa armigera
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Effect of Larvae Treated with Mixed Biopesticide Bacillus thuringiensis - Abamectin on Sex Pheromone Communication System in Cotton Bollworm Helicoverpa armigera

机译：苏云金芽孢杆菌-阿维菌素混合杀虫剂处理对棉铃虫性信息素通讯系统的影响。

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Third instar larvae of the cotton bollworm (Helicoverpa armigera) were reared with artificial diet containing a Bacillus thuringiensis - abamectin (BtA) biopesticide mixture that resulted in 20% mortality (LD20). The adult male survivors from larvae treated with BtA exhibited a higher percentage of “orientation” than control males but lower percentages of “approaching” and “landing” in wind tunnel bioassays. Adult female survivors from larvae treated with BtA produced higher sex pheromone titers and displayed a lower calling percentage than control females. The ratio of Z-11-hexadecenal (Z11–16:Ald) and Z-9-hexadecenal (Z9–16:Ald) in BtA-treated females changed and coefficients of variation (CV) of Z11–16:Ald and Z9–16:Ald were expanded compared to control females. The peak circadian calling time of BtA-treated females occurred later than that of control females. In mating choice experiment, both control males and BtA-treated males preferred to mate with control females and a portion of the Bt-A treated males did not mate whereas all control males did. Our Data support that treatment of larvae with BtA had an effect on the sex pheromone communication system in surviving H.armigera moths that may contribute to assortative mating.
机译：棉铃虫（Helicoverpa armigera）的三龄幼虫用含有苏云金芽孢杆菌-阿维菌素（BtA）生物农药混合物的人工饲料饲养，导致20％的死亡率（LD20）。用BtA处理的幼虫成年雄性幸存者在风洞生物测定中显示出的“定向”百分比高于对照雄性，但“接近”和“着陆”百分比更低。 BtA处理的幼虫成年雌性幸存者产生的性信息素滴度更高，召唤率也低于对照雌性。 BtA处理的女性中Z-11-十六烯（Z11-16：Ald）和Z-9-十六烯（Z9-16：Ald）的比例发生了变化，Z11-16：Ald和Z9-Z的变异系数（CV） 16：与对照女性相比，Ald有所扩大。经BtA处理的雌性动物的昼夜节律性呼叫高峰时间晚于对照雌性动物。在交配选择实验中，对照雄性和经BtA处理的雄性均倾向于与对照雌性交配，部分Bt-A处理的雄性未交配，而所有对照雄性均交配。我们的数据支持使用BtA处理幼虫会对存活的H.armigera飞蛾中的性信息素通讯系统产生影响，这可能有助于进行交配。

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