文献类型： 外文期刊

作者： Lu, Z. B. ² ; Tian, J. C. ³ ; Han, N. S. ¹ ; Hu, C. ¹ ; Peng, Y. F. ⁴ ; Stanley, David ⁵ ; Ye, G. Y. ¹ ;

作者机构： 1.Zhejiang Univ, State Key Lab Rice Biol, Hangzhou 310058, Zhejiang, Peoples R China

2.Zhejiang Univ, Inst Insect Sci, Key Lab Agr Entomol, Minist Agr, Hangzhou 310058, Zhejiang, Peoples R China

3.Zhejiang Acad Agr Sci, Inst Plant Protect & Microbiol, Hangzhou 310021, Zhejiang, Peoples R China

4.Chinese Acad Agr Sci, Inst Plant Protect, State Key Lab Biol Plant Dis & Insect Pests, Beijing 100094, Peoples R China

5.USDA ARS, Biol Control Insects Re

关键词： Bacillus thuringiensis;cry1C;cry2A;arthropod community;nontarget organism

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

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收录情况： SCI

摘要： A2-yr field trial was conducted to assess the impacts of two new transgenic Bt rice lines, T1C-19 expressing Cry1C protein and T2A-1 expressing Cry2A protein, on the arthropod community sampled via vacuum. All the arthropods were classified into five guilds, including herbivores, parasitoids, predators, detritivores, and others. The seasonal density and dominance distribution of each guild and community-level indices (species richness, Shannon-Wiener diversity index, Simpson diversity index, and evenness index) were compared among rice types. Principal response curves were used to investigate the differences of entire arthropod community of Bt rice plots relative to non-Bt rice plots. The results showed no significant difference was detected in the community-level indices and dominance distribution of guilds between Bt and non-Bt rice plots. The seasonal density of herbivores, detritivores, and others as well as density of the arthropod overall community were also not significantly affected by rice types in either year, although the density of predators and parasitoids in Bt rice plots was significantly lower than those in non-Bt rice plots. The lower abundances of Braconidae, Eulophidae, Cyrtorhinus lividipennis (Reuter) (Hemiptera: Miridae), and Theridiidae in Bt rice plots are likely attributed to the lower abundances of prey species or hosts. Principal response curves revealed that arthropod community in Bt was similar with that in non-Bt rice plots. In conclusion, our findings indicate that these two tested Bt rice lines had no marked negative effects on the arthropod community in the paddy fields.