Abstract The bacterial formulations, spinosad and spinetoram, were evaluated for their efficacy in suppressing development and mating success in Cadra cautella (Walk.) (Lepidoptera: Pyralidae), the almond moth. A dilution series of spinosad and spinetoram was sprayed on rice flour. Rice flour samples sprayed with water served as the control. Late instar C. cautella larvae were introduced onto spinosad-, spinetoram-, or water-treated rice flour. The first experiment tested the effects of spinosad and spinetoram on larval mortality, as well as emergence of adults and progeny at different insecticide concentrations. In the second experiment, the mating success of C. cautella adults that had emerged from larvae exposed to spinosad was tested inside a cubicle. Both spinosad and spinetoram increased larval mortality, whereas both compounds reduced adult emergence and progeny production. Natural mating was reduced in the presence of the synthetic sex pheromone (Z,E)-9,12-tetradecadienyl acetate. However, exposure of C. cautella larvae to spinosad did not alter mating in adult progeny. Spinosad was more effective than spinetoram at suppressing C. cautella development. The study concludes that both spinosad and spinetoram suppress the development of immatures of C. cautella to the adult stage as well as mating. Thus, the both compounds can be used to protect stored grains from infestation by C. cautella.

中文翻译：

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多杀菌素和多杀菌素对 Cadra cautella (Walk.) (Lepidoptera: Pyralidae) 幼虫死亡率、成虫出现、后代生产和交配的影响

摘要 评估了细菌制剂多杀菌素和多杀菌素在抑制杏仁蛾 Cadra cautella (Walk.) (鳞翅目：Pyralidae) 发育和交配成功方面的功效。将多杀菌素和多杀菌素的稀释系列喷洒在米粉上。用水喷洒的米粉样品作为对照。将晚龄 C. cautella 幼虫引入多杀菌素、多杀菌素或水处理的米粉中。第一个实验测试了多杀菌素和多杀菌素对不同杀虫剂浓度下的幼虫死亡率以及成虫和后代出现的影响。在第二个实验中，在隔间内测试了从暴露于多杀菌素的幼虫中出现的 C. cautella 成虫的交配成功率。多杀菌素和多杀菌素都增加了幼虫死亡率，而两种化合物都减少了成虫的出现和后代的产生。在合成性信息素 (Z,E)-9,12-十四碳二烯基乙酸酯存在的情况下，自然交配减少。然而，C. cautella 幼虫暴露于多杀菌素并没有改变成年后代的交配。多杀菌素在抑制 C. cautella 发育方面比多杀菌素更有效。该研究得出的结论是，多杀菌素和多杀菌素均抑制 C. cautella 未成熟体到成年阶段以及交配的发育。因此，这两种化合物都可用于保护储存的谷物免受 C. cautella 的侵染。多杀菌素在抑制 C. cautella 发育方面比多杀菌素更有效。该研究得出的结论是，多杀菌素和多杀菌素均抑制 C. cautella 未成熟体到成年阶段以及交配的发育。因此，这两种化合物都可用于保护储存的谷物免受 C. cautella 的侵染。多杀菌素在抑制 C. cautella 发育方面比多杀菌素更有效。该研究得出的结论是，多杀菌素和多杀菌素均抑制 C. cautella 未成熟体到成年阶段以及交配的发育。因此，这两种化合物都可用于保护储存的谷物免受 C. cautella 的侵染。