光周期和温度对条纹小斑蛾羽化和交配节律的影响

摘要

为了探明条纹小斑蛾Thyrassia penangae（ Moor）羽化及交配行为的发生规律，在实验室不同光周期和温度条件及自然条件下详细调查了该虫的羽化和交配节律。结果表明：在自然条件下，成虫羽化高峰期出现在上午07：00—08：00。在25、28和30℃恒温条件下，羽化高峰期随着温度升高而提前，分别出现在上午08：00—09：00，07：00—08：00和06：00—07：00；成虫羽化时间基本不受光周期的影响。在自然条件下，成虫越冬代至第3代出现的交配时间随季节日长的延长而推迟，交配高峰期分别为15：00—17：00，16：00—18：00，17：00—19：00和18：00—20：00。在25、28、30℃恒温条件下，交配时间随日长的延长而推迟，交配高峰出现的时间在日长11 h时为16：00—17：00，日长13 h时为17：00—18：00，日长15 h时为19：00—20：00；交配时间受温度的影响较小。%In order to explore the occurrence regularity of eclosion and mating behavior of Thyrassia pen⁃angae ( Lepidoptera:Zygaenidae) ,whose daily distributions of eclosion and mating activities were recorded un⁃der natural and various laboratory conditions. The result indicated that the majority of adults emerged in early morning with an eclosion peak between 07:00 and 08:00 under natural conditions.At the constant temperatures of 25,28 and 30 ℃, the peak eclosion times appeared earlier with increasing temperature, occurring in 08:00—09:00,07:00—08:00 and 06:00—07:00,respectively.Photoperiod had little influence on eclosion time. Under natural conditions,the mating time from overwintering generation to the third generation was postponed with the increase of season daylength,with the peak mating time occurring in 15:00—17:00,16:00—18:00 and 18:00—20:00,respectively.At the constant temperatures of 25,28 and 30 ℃,the mating time was post⁃poned with the increase of daylength,with the peak mating time occurring in 16:00—17:00,17:00—18:00 and 19:00—20:00,respectively.Temperature had little influence on mating time.