棉铃虫成虫对高浓度性信息素的行为反应

室内行为实验表明，在高浓度性信息素环境中棉铃虫Helicoverpa armigera (Hübner) 雌蛾更加活跃、觅偶行为更加积极主动、求偶时间显著延长，而雄蛾主动求偶时间显著缩短、静止时间显著延长。高浓度性信息素并未引起成虫在取食活动和产卵行为的明显改变，也未能有效阻断其交配行为，而是推迟了它们的交配日期、夜间初始交配时间，缩短了交配蛾的交配持续时间。因此，高浓度性信息素主要影响其交配质量，而不是交配率。

Behavioral responses of Helicoverpa armigera moth to high sex pheromone concentration

Behavioral changes of the cotton bollworm moth, Helicoverpa armigera (Hübner), caused by high concentration of sex pheromone were observed. The results showed that the female moths behaved more actively in response to the sex pheromone concentration tested. Their average staying time and copulation duration were shortened and more time was spent on calling. On the contrary, the male moths significantly cut down their calling time and spent more time on staying. There were no significant changes in feeding and oviposition behaviors. When their mating rates were taken into account, there was no significant difference between the treatment and the control. However, mating peak and initial copulation time of the females in the treated group were greatly delayed. It is suggested that copulation quality, rather than mating percentage, was influenced in this insect species under condition of high sex pheromone concentration.