Little is known about the effects of genetically modified corn plants on the foraging of Spodoptera frugiperda (J.E. Smith). Therefore, this study examines whether singular herbicide-tolerant and insect-resistant plants and their stacked events interfere with food preference and oviposition of S. frugiperda. Two non-Bt corn hybrids and three Bt-hybrids, some of them with glyphosate tolerance (GT), were evaluated. Food preference of larvae and biological parameters were assessed. Oviposition preference bioassays involved choice and no choice condition in plants uninfested and previously infested by larvae in a greenhouse and in the field. The results indicate that there is no relationship between preference of larvae and adult moths. Adult females selected preferentially transgenic hybrids, while larvae selected non-Bt hybrid. Fall armyworm larvae avoid Bt-toxin-expressing leaf tissues, survived only on the non-Bt leaf tissues, and showed minor differences in other life-history traits reared on GT and non-transgenic corn leaf tissues. Female moths showed preference for transgenic plants to lay eggs, but with variable output between previously infested and uninfested plants with larvae. The fact that moths preferred Ag 3700RR2 and non-Bt hybrids for oviposition supports the refuge’s strategy aiming at producing susceptible individuals. The use of this hybrid must be integrated with a program of control. The results showed also the importance of correct hybrid selection as part of insect resistance management to Bt-plants. The implications of these findings for understanding the impacts of plant-mediated cues on pest behavior in transgenic crop systems are discussed.

中文翻译：

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奇异和堆积的玉米是否会影响节食夜蛾的产卵和采食行为（鳞翅目：夜蛾科）？

关于转基因玉米植物对夜蛾（Spodoptera frugiperda）（JE Smith）觅食的影响知之甚少。因此，本研究探讨了耐除草剂和抗虫的奇异植物及其堆积事件是否会干扰S. frugiperda的食物偏爱和产卵。。评价了两个非Bt玉米杂种和三个Bt杂种，其中一些具有草甘膦耐受性（GT）。评估幼虫的食物偏好和生物学参数。产卵优先生物测定法涉及在未受温室侵害和先前曾在温室和田间受幼虫侵害的植物中的选择和无选择条件。结果表明，幼虫的偏好与成年蛾之间没有关系。成年雌性优先选择转基因杂种，而幼虫则选择非Bt杂种。秋季粘虫幼虫避免表达Bt毒素的叶组织，仅在非Bt的叶组织上存活，并且在GT和非转基因的玉米叶组织上饲养的其他生活史特征上显示出微小差异。雌蛾显示出对转基因植物产卵的偏好，但在先前受感染和未受感染的幼虫植物之间的产量可变。飞蛾更喜欢使用Ag 3700RR2和非Bt杂种进行产卵，这一事实支持了旨在生产易感个体的避难所策略。这种混合动力的使用必须与控制程序集成在一起。结果还表明正确选择杂种作为对Bt植物进行昆虫抗性管理的一部分的重要性。讨论了这些发现对理解植物介导的线索对转基因作物系统中有害生物行为的影响的意义。结果还表明正确选择杂种作为对Bt植物进行昆虫抗性管理的一部分的重要性。讨论了这些发现对理解植物介导的线索对转基因作物系统中有害生物行为的影响的意义。结果还表明正确选择杂种作为对Bt植物进行昆虫抗性管理的一部分的重要性。讨论了这些发现对理解植物介导的线索对转基因作物系统中有害生物行为的影响的意义。