| 黄丽丽1, 刘振东2, 赵小英3, 杨志刚4, 郭前爽1, 杜永均1*.高剂量性信息素环境对草地贪夜蛾求偶和交配行为的影响[J].植物保护,2024,50(2):85-92. |
| 高剂量性信息素环境对草地贪夜蛾求偶和交配行为的影响 |
| Effect of the environment with a high dose of sex pheromone on the calling and mating behavior of Spodoptera frugiperda (Smith) |
| 投稿时间：2023-03-14 修订日期：2023-04-01 |
| DOI：10.16688/j.zwbh.2023121 |
| 中文关键词: 草地贪夜蛾 性信息素 交配干扰 求偶 交配 |
| 英文关键词:Spodoptera frugiperda sex pheromone mating disruption calling mating |
| 基金项目:国家重点研发计划（2019YFD0300100）；浙江省重点研发计划（2020C02003） |
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| 中文摘要: |
| 本文在风洞中模拟形成高浓度性信息素Z7-12:Ac、Z9-14:Ac和 Z11-16:Ac 环境,研究草地贪夜蛾Spodoptera frugiperda (Smith)的求偶和交配行为,为进一步开发交配干扰技术提供技术参数和依据。研究结果表明,在高剂量性信息素环境下,草地贪夜蛾雄蛾的暗期活动时间延后,而雌蛾的活动节律则没有变化,雌雄蛾之间产生了活动节律的时间差。同时,雌雄交配率和交配持续时间显著下降,交配日龄则显著延迟2 d。由于交配日龄延迟,产卵量及其孵化率也相应降低。性信息素喷射时间间隔对草地贪夜蛾性信息素释放滴度有显著影响,当间隔时间为5、10、20 min时,雌蛾释放的性信息素滴度显著下降,以5 min为最低。因此,高剂量性信息素环境不仅影响雄蛾对性信息素的定向,对雌雄蛾间化学通讯和交配也有显著影响。 |
| 英文摘要: |
| In this paper, a comprehensive study was conducted on the calling and mating behavior of Spodoptera frugiperda under the environment with a high dose of sex pheromones Z7-12:Ac, Z9-14:Ac and Z11-16:Ac, sprayed automatically at different time intervals in a wind tunnel, with the objective of laying a basis for the development of mating disruption technology. The results showed that, in the environment of high dose of sex pheromones, the activity of male moth begins later, while that of female moths remained unchanged, exhibiting a time disparity in the activity between male and female moths. In addition, both the mating rate and mating duration decreased significantly, and the mating day-age was significantly delayed for two days. The delay in the mating day-age caused a reduction in the number of egg production and hatchability rate. The time interval of spraying sex pheromones had a significant effect on the titer of sex pheromones released by S.frugiperda, when interval was 5, 10, or 20 min, the titer of sex pheromone released by female moths decreased significantly, with the lowest level at 5-minute interval. Therefore, the high-dose sex pheromone in the environment not only had a significant impact on the orientation behavior of male moths towards the sex pheromone source but also had a significant impact on the calling and mating behavior between female and male moths. |
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