Fitness costs of reproductive capacity and ovarian development in a Bt-resistant strain of the cotton bollworm Helicoverpa armigera (Hubner) (Lepidoptera: Noctuidae)

文献类型： 外文期刊

第一作者： Zhang, Wanna

作者： Zhang, Wanna;Zhong, Feng;Wang, Yanan;Guo, Yuyuan;Lu, Yanhui;Liang, Gemei;Ma, Long

作者机构：

关键词： Bacillus thuringiensis (Bt);fitness cost;Helicoverpa armigera;reproductive physiology;resistance

期刊名称：PEST MANAGEMENT SCIENCE （ 影响因子：4.845； 五年影响因子：4.674 ）

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收录情况： SCI

摘要： BACKGROUNDThe cotton bollworm Helicoverpa armigera has developed resistance to the insecticidal Cry1Ac toxins produced by Bacillus thuringiensis (Bt) in China. To gain a better understanding of the fitness cost associated with resistance evolution, reproductive capacities and ovarian development were examined in four strains of H. armigera: a Cry1Ac-susceptible strain (96S); a Cry1Ac-resistant strain fed on an artificial diet with Cry1Ac toxin for 135 generations (BtR); two strains derived from BtR: a strain grown without Cry1Ac selection for 38 generations (CK1) and a strain grown for one generation without Cry1Ac selection (CK2).

分类号： S4

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