Fitness costs and stability of Cry1Fa resistance in Brazilian populations of Spodoptera frugiperda
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- 作者：Oscar F Santos-Amaya ; Clé ; bson S Tavares ; Joã ; o Victor C Rodrigues ; Silverio O Campos ; Raul Narciso C Guedes ; Analiza P Alves and Eliseu José ; G Pereira
- 刊名：Pest Management Science
- 出版年：2017
- 出版时间：January 2017
- 年：2017
- 卷：73
- 期：1
- 页码：35-43
- 全文大小：367K
- ISSN：1526-4998
文摘
The presence of fitness costs of resistance to Bacillus thuringiensis (Bt) insecticidal proteins in insect populations may delay or even reverse the local selection of insect resistance to Bt transgenic crops, and deserves rigorous investigation. Here we assessed the fitness costs associated with Cry1Fa resistance in two strains of fall armyworm, Spodoptera frugiperda (Lepidoptera: Noctuidae), derived from field collections in different Brazilian regions and further selected in the laboratory for high levels of resistance to Cry1Fa using leaves of TC1507 corn.