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为了解斜纹夜蛾Spodoptera litura(Fabricius)配对后雌、雄成虫日活动行为节律,在室内人工气候室中配对饲养斜纹夜蛾,连续6 d观察成虫移动、静息、补充营养、产卵和交配5个行为类型。结果表明,在配对后6 d内,斜纹夜蛾的交配、产卵、移动、补充营养和停息行为所占比例均有明显变化,交配行为主要发生在配对后的前2 d,在配对后第6天成虫除偶尔补充营养外基本处于停息状态;交配行为有2个明显高峰期,即00∶00~01∶00(3.89%)和04∶00~05∶00(3.89%),雌、雄成虫移动行为日节律所占比例在03∶00~06∶00和补充营养行为日节律在03∶00~05∶00差异显著;成虫各行为分配频次最多的是停息行为,远高于其它行为,且各行为所占比例差异极显著,但雌、雄成虫之间无显著差异;雌、雄成虫运动行为几乎全部发生在暗期,且在不同时间段无显著差异;光、暗期各行为活动发生的比率差异显著;在暗期不同时间段,除雌蛾的移动行为、雄蛾的补充营养行为和交配行为无显著差异外,其它各种行为均差异显著。表明斜纹夜蛾雌、雄配对后移动、静息、补充营养、产卵和交配行为受成虫日龄影响较大,也受性别影响,表现出明显的日节律性。
In order to understand the rhythms of daily activities of female and male adults mating with Spodoptera litura (Fabricius), adult Spodoptera litura (Fabricius) was mated with litura in the indoor artificial climate chamber. The adults were observed for movement, rest, nutrition, spawning and mating 5 behavior types. The results showed that the proportion of mating, spawning, moving, nutritional supplement and resting behavior of Spodoptera litura varied significantly within 6 days after mating, and mating behavior mainly occurred in the first 2 days after mating. The 6-day-old adults were basically suspended except for occasional nutritional supplements. There were two obvious peak periods in mating behavior, namely, 00:00 ~ 01:00 (3.89%) and 04:00 ~ 05:00 (3.89%), The proportions of daily rhythm of adult behavioral movements varied from 03:00 to 06:00 and the daily rhythm of supplementary nutritional behavior varied significantly from 03:00 to 05:00. The most frequent behavioral distribution of adults was stop behavior, which was much higher than other behaviors. There was no significant difference between female and male adults. The female and male adults almost all occurred in dark period and had no significant difference in different time periods. The ratio of occurrence was significant; in different periods of dark period, there were significant differences among the other behaviors except for the female's behavior of moth's behavior and mating behavior. The results showed that the female and male Spodoptera litura migrated, rested and supplemented nutritionally, the spawning and mating behaviors were greatly influenced by the age of adults, and were also affected by the gender, showing obvious rhythms of Japanese rodents.