Laboratory and Field Assessments of Prey-Mediated Effects of Transgenic Bt Rice on Ummeliata insecticeps (Araneida: Linyphiidae)

文献类型： 外文期刊

第一作者： Chen, Y.

作者： Chen, Y.;Chen, X. X.;Hu, C.;Ye, G. Y.;Liu, Z. C.;Chen, M.;Peng, Y. F.

作者机构：

关键词： insecticidal protein;Gene Name;rice Cry1Ab gene [Gramineae];rice Cry1Ab/Cry1Ac gene [Gramineae];population dynamics;developmental time;tritrophic interaction;prey-mediated effect

期刊名称：ENVIRONMENTAL ENTOMOLOGY （ 影响因子：2.377； 五年影响因子：2.298 ）

ISSN：

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收录情况： SCI

摘要： One major concern regarding the release of Bt rice is its potential impact through tritrophic interactions on nontarget arthropods, especially natural enemies We studied the effects of two Bt transgenic rice varieties, TT9-3 and KMD1, expressing Cry1Ab/Cry1Ac and Cry1Ab, respectively, on a predatory ground spider [Ummeliata insecticeps (Bosenberg et Strand) I supplied with Bt rice-fed brown planthopper [Nilaparvata lugens (Stal)] nymphs. Although immunoassays confirmed that U insecticeps ingested Bt insecticidal protein when supplied with Bt rice-fed N lugens, no negative effects were found on its survival and development. Furthermore, the fecundity of U insecticeps fed prey reared on Bt rice was not significantly different from that of those fed prey reared on non-Bt rice. A 3-yr field trial indicated that Bt rice did not significantly affect the population density of U insecticeps in comparison with non-Bt rice. In conclusion, the Bt rice lines tested in this study had no adverse effects on the survival, developmental time, or fecundity of U insecticeps in the laboratory or on population dynamics in the field.

分类号： Q96

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