Species composition and seasonal dynamics of aphid parasitoids and hyperparasitoids in wheat fields in northern China

文献类型： 外文期刊

第一作者： Xu, Lei

作者： Xu, Lei;Wu, Yue-Kun;Wang, Qian;Yao, Zhi-Wen;Lu, Yan-Hui;Guo, Yu-Yuan;Zikic, Vladimir;Tomanovic, Zeljko;Ferrer-Suay, Mar;Selfa, Jesus;Pujade-Villar, Juli;Traugott, Michael;Desneux, Nicolas

作者机构：

期刊名称：SCIENTIFIC REPORTS （ 影响因子：4.379； 五年影响因子：5.133 ）

ISSN： 2045-2322

年卷期： 2017 年 7 卷

页码：

收录情况： SCI

摘要： Parasitoids are important natural enemies of aphids in wheat fields of northern China, and interest in them has increased in recent years. However, little is known regarding parasitoids of wheat aphids, which has hindered the study and understanding of aphid-parasitoid interactions. In the present study, three primary parasitoids and 15 hyperparasitoids were collected in wheat fields during a 2-year survey in northern China (2014, 2015) and a 2-year investigation at Langfang, Hebei Province (2015, 2016). Among them, Aphidius uzbekistanicus Luzhetski was found most frequently among the primary parasitoids, while Pachyneuron aphidis (Bouche) dominated the hyperparasitoid community. Investigation of the dynamics of wheat aphids and parasitoids revealed that the primary parasitoids appeared early in the growing period and that the hyperparasitoids appeared later. Analysis of the seasonal dynamics revealed that growth of the parasitoid population followed that of the aphid population and that the parasitism rates were highest in the late growing period.

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