黑肩绿盲蝽与褐飞虱的伴迁行为研究

Accompanying Migration by Cyrtorhinus lividipennis(Reuter) with Its Insect,Nilaparvata lugens(Stl)

天敌伴迁具有重要的生态学和行为学意义,黑肩绿盲蝽Cyrtorhinus lividipennis(Reuter)捕食褐飞虱Nilaparvata lugens(St?l)的卵和低龄若虫,因此,明确迁飞习性及其与褐飞虱的伴迁关系,有助于指导褐飞虱的综合治理。2008—2012年在广西兴安县设置探照灯和佳多自动虫情测报灯,监测黑肩绿盲蝽和褐飞虱的季节性消长动态。结果发现,黑肩绿盲蝽在两种灯下的始见期都迟于褐飞虱,相同时间段内两者的诱集量呈显著正相关;7月下旬至8月下旬是黑肩绿盲蝽的发生高峰期;蝽虱比达到或超过1:1.1时对褐飞虱的种群发展有一定的控制作用;灯诱黑肩绿盲蝽种群中性比一般大于1:1。

Accompanying migration by natural enemies with their host insects is of important ecological and behavioral significance. Cyrtorhinus lividipennis (Reuter) preys on the eggs and early instar nymphs of Nilaparvata lugens (St?l). Elucidation of migrating habit of C. lividipennis and accompanying migration with N. lugens will provide key guidance for the integrated control of N. lugens. From 2008 to 2012, a long-term monitoring of seasonal population dynamic of C. lividipennis and N. lugens was conducted with a searchlight trap and a Jiaduo light trap in Xing’an County, Guangxi Zhuang Autonomous Region. Results showed that initial migration period of C. lividipennis obtained by both light traps was after that of N. lugens, the peak period of trapped C. lividipennis was from the late July to late August and there were more females in C. lividipennis catches. Population size of both insects were significantly positively correlated, N. lugens could be controlled by the predator when the population ratio between C. lividipennis and N. lugens reached or more than 1:1.1.