【摘要】 在7个温度条件下利用昆虫飞行信息系统和起飞测定装置对谷蠹成虫的飞行行为进行了研究。结果表明:谷蠹成虫在20℃以上时具备飞行能力,最适起飞温度为32℃。雌雄成虫的平均飞行速度均随测定温度的升高先增大后减小,分别在35℃和32℃时达到最大;雌成虫的24h累计飞行距离和24 h累计飞行时间均在20℃时有最小值,23℃及以上温度条件下无显著差异;雄成虫的24 h累计飞行距离和24 h累计飞行时间均随测定温度的升高先增大后减小,在32℃时有最大值。谷蠹的飞行活动呈现一定的节律性,在13:00—21:00期间飞行次数高于日平均水平,15:00—16:00飞行活动最为活跃。研究结果丰富了谷蠹的飞行行为学信息,可为粮食储存期间谷蠹感染的预防和灯光诱捕技术的应用提供参考。更多还原

【Abstract】 The flight activity of lesser grain borer,Rhyzopertha dominica(Fabricius),were tested by a computer monitored flight mill system and flight chambers in seven different temperatures. The results showed that R.dominica could flight above 20 ℃,and the optimum temperature for flight initiation was 32 ℃. The average speed of flight for females and males increased initially and then decreased with the increase of the measured temperatures,the top average speed appeared at 35 ℃ and 32 ℃ respectively. The total flight distances and flight durations in 24 h of female adults were the lowest at 20 ℃,but there was no significant difference between 23 ℃and above tested temperatures. The total flight distances and total flight durations in 24 h of male adults both increased initially,then decreased with the increase of the measured temperatures,they reached the maximum at32 ℃. Flight activity of lesser grain borers presented a certain rhythm,which showed frequency flight was higher than the daily average level at 13:00-21:00,while they became the highest at 15:00-16:00. The results enrich the flight behavior information of R. dominica and can provide reference for the prevention and light trap technology of lesser grain borer.更多还原