夜晚光照影响荔枝蒂蛀虫生活习性的观察

为了探索广州市天河区罗通山脚龙眼果园荔枝蒂蛀虫危害特别轻的原因,采用荔枝落地果在室内开放式饲养荔枝蒂蛀虫,研究荔枝蒂蛀虫对夜晚光照的反应变化,观察到蒂蛀虫在不同虫期都对夜晚光照有异常的反应:幼虫推迟了脱果爬行成茧的时间:蛹延后羽化;成虫的活动减少或时间规律紊乱;部分成虫长睡不醒;成虫蛰伏高度总体降低;生存率低于对照等.试验结果表明:荔枝蒂蛀虫没有"趋光性".讨论了利用夜晚人工光照等物理防治方法来建立果园新的生态平衡.辅助控制或减轻荔枝蒂蛀虫危害的可能性.

Observation on Conopomorpha sinensis Bladley living habits impacted by night light

In order to explore the reasons of the longan fruit,of Luotongshangjiao orchard at Tianhe District in Guangzhou,being almost not harmed by Conopomorpha sinensis Bladley. The authors kept the insect in the office-room,in the form of open, using litchi fruit fell on the ground,for researching the response of Conopomorpha sinensis Bladley to the night light.They observed unusual reaction of the insect to the night light. The larvae postponed the time of crawl and cocooning; the pupae put off eclosion; the activities and its activities law of the adult reduced or disordered;some adults of the insect were "sleeping"(dormaney) always; the dormant height of the adult reduced overally; the survival rate was lower than that of control;and so on. This study also showed that, Conopomorpha sinensis Bladley had no phototaxis. The authors discussed that re-created a new orchard ecological balance by using artificial light at night and other physical control methods for auxiliary controlling or reducing the damage of Conopomorpha sinensis Bladley.