Radar observations of the autumn migration of the beet armyworm Spodoptera exigua (Lepidoptera : Noctuidae) and other moths in northern China

文献类型： 外文期刊

第一作者： Wu, KM

作者： Wu, KM;Cheng, DF;Guo, YY

作者机构：

期刊名称：BULLETIN OF ENTOMOLOGICAL RESEARCH （ 影响因子：1.75； 五年影响因子：2.007 ）

ISSN： 0007-4853

年卷期： 2003 年 93 卷 2 期

页码：

收录情况： SCI

摘要： The autumn return migration of the beet armyworm Spodoptera exigua Hubner and other insects in northern China was observed with radar and with a simultaneously-operated searchlight trap and ground light-trap at a site in Langfang, near Beijing. The searchlight trap was found to be an efficient tool for trapping migrants and, operated alongside a ground light-trap, could distinguish migrant from locally-flying species. It was confirmed that S. exigua and some other species were high-altitude nocturnal windborne migrants during September and October in northern China. Maximum density of moths typically occurred below 500 m, and strong layering was often observed at about 200 m above ground level in airflows that would carry the moths towards the south. Descent of S. exigua in the vicinity of the radar site in late September was often associated with rain.

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