The 2008 overseas mass migration of the small brown planthopper, Laodelphax striatellus, and subsequent outbreak of rice stripe disease in western Japan
The 2008 overseas mass migration of the small brown planthopper, Laodelphax striatellus, and subsequent outbreak of rice stripe disease in western Japan
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DOI：
10.1303/aez.2010.259
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发表时间：
2010-05-01
影响因子：
1.3
通讯作者：
Inoue, Hideaki
中科院分区：
文献类型：
--
作者：
Otuka, Akira;Matsumura, Masaya;Inoue, Hideaki
灰飞虱Laodelphaystriatellus（Fallen）是亚洲水稻的主要害虫之一。该物种被认为是水稻条纹病毒的媒介昆虫，并且被认为表现出强烈的本土性，不像其他迁移性水稻稻飞虱，褐飞虱和白背飞虱。大型诱捕器捕获L.在2008年6月初的一个大风天，在日本西部记录到了具有高带病毒率的条纹体，随后，水稻条纹病在这些地区传播。利用后向轨迹分析法对移民来源地进行了估计，发现移民来源地为中国江苏省。2004年以来，江苏省灰飞虱和水稻条纹叶枯病发生严重，6月上旬正值麦收季节，可能成为稻飞虱迁飞的诱因。采用局部施药法比较了日本西部和江苏两个地区水稻群体对杀虫剂的敏感性。中国和移民种群仅对吡虫啉表现出抗性，而日本当地种群仅对氟虫腈表现出抗性。这些证据表明，产毒L.从中国到日本西部的striatellus在昆虫迁入的地区发生并随后引起水稻条纹叶枯病。
The small brown planthopper, Laodelphay striatellus (Fallen), is one of the major insect pests of rice in Last Asia. This species is known as a vector insect of Rice stripe virus, and has been believed to show strong indigenousness, unlike other migratory rice planthoppers, the brown planthopper and the whitebacked planthopper. Large trap catches of L. striatellus with high viruliferous rates were recorded in western Japan on a windy day in early June 2008, and subsequently, rice stripe diseases spread in these regions. The migration source was estimated using backward trajectory analysis, and found to be Jiangsu Province, China. Laodelphay striatellus with high viruliferous rates and rice stripe diseases has occurred markedly throughout Jiangsu Province since 2004, and early June is the wheat harvest season, which could serve as a stimulus for planthopper emigration. Insecticide susceptibility of populations collected in rice fields both in western Japan and Jiangsu were compared by a topical application method. Both Chinese and immigrant populations showed resistance only against imidacloprid, whereas Japanese local populations showed resistance only against fipronil. Collectively, this evidence suggested that the overseas migration of viruliferous L. striatellus from China to western Japan occurred and subsequently caused rice stripe diseases in the areas to which insects immigrated.