Patterns of genetic variation among geographic and host-plant associated populations of the peach fruit moth Carposina sasakii (Lepidoptera: Carposinidae)

文献类型： 外文期刊

第一作者： Wang, You-Zhu

作者： Wang, You-Zhu;Li, Bing-Yan;Cao, Li-Jun;Gong, Ya-Jun;Song, Wei;Wei, Shu-Jun;Wang, You-Zhu;Li, Bing-Yan;Zhu, Jia-Ying;Hoffmann, Ary Anthony

作者机构：

关键词： Carposina sasakii;Microsatellite;Mitochondrial gene;Host-associated differentiation;Population genetic structure

期刊名称：BMC EVOLUTIONARY BIOLOGY （ 影响因子：3.26； 五年影响因子：3.732 ）

ISSN： 1471-2148

年卷期： 2017 年 17 卷

页码：

收录情况： SCI

摘要： Background: Populations of herbivorous insects may become genetically differentiated because of local adaptation to different hosts and climates as well as historical processes, and further genetic divergence may occur following the development of reproductive isolation among populations. Here we investigate the population genetic structure of the orchard pest peach fruit moth (PFM) Carposina sasakii (Lepidoptera: Carposinidae) in China, which shows distinct biological differences when characterized from different host plants. Genetic diversity and genetic structure were assessed among populations from seven plant hosts and nine regions using 19 microsatellite loci and a mitochondrial sequence. Results: Strong genetic differentiation was found among geographical populations representing distinct geographical regions, but not in host-associated populations collected from the same area. Mantel tests based on microsatellite loci indicated an association between genetic differentiation and geographical distance, and to a lesser extent environmental differentiation. Approximate Bayesian Computation analyses supported the scenario that PFM likely originated from a southern area and dispersed northwards before the last glacial maximum during the Quaternary. Conclusions: Our analyses suggested a strong impact of geographical barriers and historical events rather than host plants on the genetic structure of the PFM; however, uncharacterized environmental factors and host plants may also play a role. Studies on adaptive shifts in this moth should take into account geographical and historical factors.

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