The phylogenetic relationships of introduced Aphelinus （Hymenoptera： Aphelinidae）, biological control agents of the Russian wheat aphid （Homoptera： Aphididae）

作     者：Yu Cheng Zhu Quentin Q. Fang 

作者机构：USDA-ARS-JWDSRC Stoneville MS 38776 Department of Biology Georgia Southern University Statesboro GA 30460 USA 

出 版 物：《Insect Science》 (昆虫科学（英文版）)

年 卷 期：2009年第16卷第3期

页      面：277-285页

核心收录：

学科分类：0710[理学-生物学] 090403[农学-农药学(可授农学、理学学位）] 07[理学] 09[农学] 0904[农学-植物保护] 

主　　题：Aphelinus Aphidius ITS molecular systematics phylogeny rDNA 

摘      要：Several species of Aphelinus have been introduced to the US from the Old World for biological control of the Russian wheat aphid, Diuraphis noxia （Modvilko）. Reproductive incompatibility has been observed among populations collected from different geographic areas. We examined whether or not the reproductive incompatibility between strains of A. asychis was caused by distant phylogenetic relationships. Ribosomal DNA sequences of internal transcribed spacers 2 （ITS2） were analyzed in several species of Aphelinus collected from multiple sites of Europe and Asia. Yhe phylogenetic analysis showed that strains within the species A. albipodus and A. asychis are not monophyletic, and two clearly divergent clades were revealed among sequenced samples. Our results suggest that the reproductive incompatibility between three exotic strains ofA. asychis was more likely caused by divergence of phylogeny than by symbiotic bacteria.