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The life parameters of a parasitoid Microplitis mediator (Hymenoptera: Braconidae), reared on cotton bollworm Helicoverpa armigera (Hubner) with Cry1Ac diet

文献类型： 外文期刊

作者： Ding, Jun 1 ; Li, Jiancheng 2 ; Liu, Xiaoxia 1 ; Zhang, Qingwen 1 ;

作者机构： 1.China Agr Univ, Coll Agron & Biotechnol, Dept Entomol, Beijing 100193, Peoples R China

2.Hebei Acad Agr & Forestry, Inst Plant Protect, Baoding 071001, Peoples R China

关键词： Helicoverpa armigera;Bacillus thuringiensis;parasitism;Microplitis mediator

期刊名称：BIOCONTROL SCIENCE AND TECHNOLOGY （ 影响因子：1.665； 五年影响因子：1.616 ）

ISSN： 0958-3157

年卷期： 2009 年 19 卷 9 期

页码：

收录情况： SCI

摘要： Microplitis mediator (Haliday) is an important endoparasitoid of the cotton bollworm, Helicoverpa armigera (Hubner) in northern China. Interactions among H. armigera, its larval parasitoid M. mediator, and Cry1Ac over two generations were evaluated under laboratory conditions. The results indicated that the developmental period of M. mediator offspring's eggs and larvae were significantly delayed and pupal and adult weight were significantly less compared to the control when the female parasitoids parasitized H. armigera larvae that fed on diet containing 1, 2, 4 and 8 mu g/g Cry1Ac. The female parasitoids emerged from the host fed diet containing 8 mu g/g Cry1Ac could oviposit in healthy hosts, and their offspring's biological parameters (egg-larval period, pupal weight and adult weight), parasitism rate, abnormal cocoon rate and adult emergence were not significantly affected. Cry1Ac was detected in larvae and hemolymph of H. armigera, but not in the larvae of M. mediator. The results suggest that the observed significant effects on several fitness parameters of the F1 M. mediator developed from H. armigera fed Cry1Ac diet most likely were host-quality mediated rather than direct effects of Cry1Ac.

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[1]Host age preference of Microplitis mediator (Hymenoptera : Braconidae), an endoparasitoid of Mythimna separata (Lepidoptera : Noctuidae). Li, Jiancheng,Coudron, Thomas A.,Pan, Wenliang,Liu, Xiaoxia,Lu, Ziyun,Zhang, Qingwen. 2006

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[4]Toxicity and binding analyses of Bacillus thuringiensis toxin Vip3A in Cry1Ac-resistant and -susceptible strains of Helicoverpa armigera (Hubner). Lu Qiong,Zhang Yan,Liang Ge-mei,Zhang Qian,Chen Li-zhen. 2015

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