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Host specificity of Euops chinesis, a potential biological control agent of Fallopia japonica, an invasive plant in Europe and North America

文献类型： 外文期刊

作者： Wang, Yangzhou 1 ; Wu, Kai 1 ; Ding, Jianqing 1 ;

作者机构： 1.Chinese Acad Sci, Wuhan Bot Garden Inst, Key Lab Aquat Bot & Watershed Ecol, Wuhan 430074, Hubei, Peoples R China

2.Jilin Acad Agr Sci, Inst Plant Protect, Changchun 130124, Jilin, Peoples R China

3.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China

关键词： Fallopia japonica;mutualism

期刊名称：BIOCONTROL （ 影响因子：3.571； 五年影响因子：3.243 ）

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收录情况： SCI

摘要： Fallopia japonica (Houttuyn) Ronse Decraene (Polygonaceae) is a serious invasive weed in North American and Europe. In its native China, a leaf-rolling weevil, Euops chinesis (Coleoptera: Attelabidae) was found attacking F. japonica in the field. No-choice tests, multiple-choice tests, open field tests and field surveys were conducted as a measure of its host specificity. Forty-six plant species were selected from 17 families for host range testing, among which, six species, F. multiflora, F. japonica, Persicaria perfoliata, Rumex acetosa, R. japonicus and R. aquaticus, were exposed to adults in no-choice tests. However, larvae could only develop successfully on F. japonica, and this plant appeared to be the only host in the field, suggesting the weevil is host-specific. As larval development appears to depend on a fungus in the leaf rolls, the insect-fungus mutualism and risks including host specificity of the fungus should be evaluated before the insect's introduction.

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