豆野螟成虫日龄对交尾的影响及雄蛾对性信息素的触角电位反应  

Effect of male and female adult age on the mating success and male EAG response to sex pheromones of the legume pod borer, Maruca vitrata

作　　者：陆鹏飞[1] 乔海莉[2] 王小平[1] 周兴苗[1] 朱芬[1] 雷朝亮[1] 

机构地区：[1]华中农业大学植物科技学院昆虫资源研究所,武汉430070 [2]温州医学院健康与环境生态研究所,浙江温洲325035

出　　处：《昆虫知识》2007年第5期665-670,共6页Entomological Knowledge

基　　金："十一五"国家科技支撑计划项目(2006BAD17B08);湖北省自然科学基金(2007ABA012)

摘　　要：豆野螟Marucavitrata(Fabricius)是一种严重的泛热带豆类蔬菜害虫。在不同温度,光周期14L∶10D,相对湿度75%～80%条件下,研究豆野螟成虫日龄对交尾的影响及雄蛾对性信息素的EAG反应。不同日龄雌蛾与3日龄雄蛾的交尾,交尾率随蛾龄增加呈下降趋势;不同日龄雄蛾与3日龄雌蛾交尾,交尾率随蛾龄增加呈升高趋势;相同日龄成蛾,交尾率先升后降。不同日龄雌蛾交尾百分率的下降在较高温环境比在较低温环境更加显著;但环境温度对不同日龄雄蛾的交尾却没有太大的影响;相同日龄成蛾3日龄以后的交尾在较高温环境下下降的更快。不同日龄雌蛾的交尾研究中,随着雌蛾日龄的增加,交尾持续时间明显延长;不同日龄雄蛾的交尾研究中,较低日龄和较高日龄雄蛾交尾时的持续时间较长。在较低温环境下所有试验各日龄的持续时间均有所延长。不同日龄雌蛾(雄蛾)与3日龄雄蛾(雌蛾)的交尾和相对应的雄蛾对雌蛾性信息素的EAG反应基本一致,说明雄蛾的反应在交尾行为的完成中具有重要的作用。The legume pod borer, Maruca vitrata （ Fabricius）, is a serious pantropical insect pest of grain legumes. Effect of male and female age on the mating success and circadian rhythms of male response to female sex pheromones of the legume pod borer were investigated at different temperatures and 75% - 80% R.H. under 14L： IOD. The activity of the females remained at a high level until the 3rd days after adult emergence, whereas in males, the peak of activity occurred on the 3rd day and activity remained at a high level until the 6th days. The mating frequency of same-aged pair was low at 1-day-old, reached a maximum at 3-day-old and thereafter decreased rapidly with age. The declines in female mating success were more pronounced under warm than cool thermocycles, while were not obvious for males. The time spend mating was longer in older than in younger females. Very young and very old males generally spent more time in mating than mature individuals. The duration of mating was considerably prolonged at all ages under cool than warm thermocycles. Effect of male and female age on the mating success and circadian rhythms of male response to female sex pheromones of the legume pod borer were synchronized, which showed male response play an important role in copulation of M. vitrata.

关 键 词：豆野螟 日龄 交尾 性信息素 EAG 

分 类 号：S433[农业科学—农业昆虫与害虫防治] Q968[农业科学—植物保护]