井上蛀果斑螟昼夜行为节律研究

摘要

In order to determine the circadian rhythm of Assara inouei ,the eclosion,mating,oviposition,hatch-ing and pupation were studied under the photoperiod of L∥D=15 h∥9 h at (25±1)℃ and RH of 60% ± 10% in the laboratory.The results showed that the eclosion,mating,oviposition,hatching and pupation of A.inouei had a significant biological rhythm.The adult emergence occurred mainly (80%)in 18:00-04:00,and the high-est emergence rate occurred in 20:00-22:00;75% of mating occurred in 04:00-08:00,with the highest mating rate occurring in 06:00-08:00,and the single adult mating duration was between 20-60 min,with a mean value of 42.12 min;73.99% female adults oviposited in 02:00-10:00,significantly higher than in the other periods;82.86% of egg hatching occurred in 04:00-10:00 and 16:00-20:00,significantly higher than in the other peri-ods;72.83% of the larvae pupated in 10:00-14:00 and 18:00-22:00,with the pupation peak occurring in 18:00-20:00.%为明确井上蛀果斑螟（Assara inouei ）昼夜行为节律，在温度（25±1）℃、光周期 L∥D＝15 h∥9 h、RH 60％±10％条件下，系统观察了井上蛀果斑螟的羽化、交配、产卵、卵孵化及幼虫化蛹等行为节律。结果表明：井上蛀果斑螟的羽化、交配、产卵、孵化、化蛹行为具有明显的昼夜节律。成虫的羽化主要发生在18：00－04：00，此时成虫的羽化数量占总羽化数量的80％以上，其中以20：00－22：00羽化率最高；成虫交配活动主要发生在04：00－08：00，交配率超过75％，以06：00－08：00交配率最高；单次交配持续时间为20～60 min，平均为42．12 min；其产卵活动主要发生在02：00－10：00，该时段所产卵量达到总产卵量的73．99％，显著高于其他时段；卵孵化主要发生在04：00－10：00和16：00－20：00两个时段，卵的孵化数量占孵化总数的82．86％，显著高于其他时段；幼虫化蛹主要发生在10：00－14：00和18：00－22：00两个时段，幼虫化蛹数占总化蛹数的72．83％，化蛹高峰为18：00－20：00。