Hu Chaoxing, Guo Jianglong, Fu Xiaowei, Huang Yunxin, Gao Xiwu, Wu Kongming
College of Plant Protection, China Agricultural University, Beijing, China.
Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China.
J Econ Entomol. 2018 Sep 26;111(5):2129-2135. doi: 10.1093/jee/toy163.
The brown planthopper Nilaparvata lugens (Stål) (Hemiptera: Delphacidae) is a major, regionally migratory pest of rice crops in Asia. Despite intensive studies, the seasonal pattern of migration in this species remains largely unknown, especially in northern China. Analysis of monitoring data of light trapping at Beihuang island in northern China showed that brown planthopper migrants could be found at the island in any month from July to October. However, the daily number of brown planthopper migrants varied considerably from day to day, month to month, and year to year. Most of migrants were caught from July to September, with fewer in October. Simulation of backward trajectories showed that there was temporal variation in the source areas of brown planthopper migrants trapped at Beihuang. A majority of migrants trapped at Beihuang in July came from south of Beihuang. In contrast, migrants caught in August and September could be from any direction around the island. Results suggested that the brown planthopper migrants likely traveled northward in July, and Multidirectionally in August and September in northern China. Some of brown planthopper in northeastern China could escape the 'Pied Piper effect' and migrate southward in September.
褐飞虱Nilaparvata lugens（Stål）（半翅目：飞虱科）是亚洲水稻作物的一种主要的区域性迁飞害虫。尽管进行了深入研究，但该物种的季节性迁飞模式在很大程度上仍不清楚，尤其是在中国北方。对中国北方北隍城岛灯光诱捕监测数据的分析表明，7月至10月的任何一个月在该岛都能发现褐飞虱迁飞个体。然而，褐飞虱迁飞个体的每日数量在不同日期、不同月份和不同年份差异很大。大多数迁飞个体是在7月至9月捕获的，10月较少。后向轨迹模拟表明，北隍城岛捕获的褐飞虱迁飞个体的源地存在时间变化。7月在北隍城岛捕获的大多数迁飞个体来自北隍城岛以南。相比之下，8月和9月捕获的迁飞个体可能来自该岛周围的任何方向。结果表明，在中国北方，褐飞虱迁飞个体可能在7月向北迁飞，8月和9月向多个方向迁飞。中国东北地区的一些褐飞虱可能会避开“笛手效应”，在9月向南迁飞。
