文献类型： 外文期刊

作者： Tian, Jun-Ce ² ; Long, Li-Ping ¹ ; Wang, Xiang-Ping ¹ ; Naranjo, Steven E. ⁵ ; Romeis, Joerg ⁶ ; Hellmich, Richard ¹ ;

作者机构： 1.Cornell Univ, New York State Agr Expt Stn, Dept Entomol, Geneva, NY 14456 USA

2.Zhejiang Acad Agr Sci, Inst Plant Protect & Microbiol, Dept Entomol, State Key Lab Breeding Base Zhejiang Sustainable, Hangzhou 310000, Zhejiang, Peoples R China

3.Guangxi Acad Agr Sci, Rice Res Inst, Dept Entomol, Nanning 530007, Guangxi, Peoples R China

4.Yangtze Univ, Coll Agr, Dept Entomol, Jinzhou 434001, Hubei, Peoples R China

5.USDA ARS, Arid Land Agr Res Ctr, Maricopa, AZ 85138 USA

6.Agroscope Reckenholz Tanikon Res Stn ART, Biosafety Program, CH-8046 Zurich, Switzerland

7.Iowa State Univ, USDA ARS, Corn Insects & Crop Genet Res Unit, Ames, IA 50011 USA

8.Iowa State Univ, Dept Entomol, Genet Lab 110, Ames, IA 50011 USA

关键词： transgenic Bt crop;Trichoplusia ni;Spodoptera frugiperda;biological control service;prey quality

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

ISSN： 0046-225X

年卷期： 2014 年 43 卷 1 期

页码：

收录情况： SCI

摘要： Geocoris punctipes (Say) and Orius insidiosus (Say) are generalist predators found in a wide range of crops, including cotton (Gossypium hirsutum L.) and maize (Zea mays L.), where they provide important biological control services by feeding on an array of pests, including eggs and small larvae of caterpillars. A high percentage of cotton and maize in the United States and several other countries are transgenic cultivars that produce one or more of the insecticidal Cry proteins of Bacillus thuringiensis Berliner (Bt). Here we quantify effects of three Cry proteins on the life history of these predators over two generations when they are exposed to these Cry proteins indirectly through their prey. To eliminate the confounding prey quality effects that can be introduced by Bt-susceptible prey, we used Cry1Ac/Cry2Ab-resistant Trichoplusia ni (Hubner) and Cry1 F-resistant Spodoptera frugiperda (J.E. Smith) in a series of tri-trophic studies. Survival, development, adult mass, fecundity, and fertility were similar when predators consumed larvae feeding on Cry1Ac/Cry2Ab cotton or Cry1 F maize compared with prey feeding on isogenic or near-isogenic cotton or maize. Repeated exposure of the same initial cohort over a second generation also resulted in no differences in life-history traits when feeding on non-Bt- or Bt-fed prey. Enzyme-linked immunosorbent assay showed that predators were exposed to Bt Cry proteins from their prey and that these proteins became increasingly diluted as they moved up the food chain. Results show a clear lack of effect of three common and widespread Cry proteins on these two important predator species. The use of resistant insects to eliminate prey quality effects provides a robust and meaningful assessment of exposure and hazard.