Fulltext

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

Tian, J. C. ; Liu, Z. C. ; Chen, M. ; Chen, Y. ; Chen, X. X. ; Peng, Y. F. ; Hu, C. ; Ye, G. Y.

In: Environmental Entomology, 2010, vol. 39, no. 4, p. 1369-1377

Add to personal list
    Title
    • Laboratory and Field Assessments of Prey-Mediated Effects of Transgenic Bt Rice on Ummeliata insecticeps (Araneida: Linyphiidae)
    Author
    • Tian, J. C.. State Key Laboratory of Rice Biology, Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Insect Sciences, Zhejiang University, Hangzhou 310029, China.
    • Liu, Z. C.. School of Agriculture and Biology, Shanghai Jiaotong University, Shanghai 200240, China.
    • Chen, M.. Department of Entomology, Cornell University, New York State Agricultural Experiment Station, Geneva, NY 14456.
    • Chen, Y.. State Key Laboratory of Rice Biology, Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Insect Sciences, Zhejiang University, Hangzhou 310029, China.
    • Chen, X. X.. State Key Laboratory of Rice Biology, Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Insect Sciences, Zhejiang University, Hangzhou 310029, China.
    • Peng, Y. F.. State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100094, China.
    • Hu, C.. State Key Laboratory of Rice Biology, Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Insect Sciences, Zhejiang University, Hangzhou 310029, China.
    • Ye, G. Y.. State Key Laboratory of Rice Biology, Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Insect Sciences, Zhejiang University, Hangzhou 310029, China.
    Document Type
    • Postprint
    Language
    • English
    Published in
    • Environmental Entomology, 2010, vol. 39, no. 4, p. 1369-1377. Oxford University Press
    Other Version
    OAI-PMH Identifier
    • oai:doc.rero.ch:297786
    Summary
    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 (Bösenberg et Strand)] supplied with Bt rice-fed brown planthopper [Nilaparvata lugens (Stål)] 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