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

BMC Evolutionary Biology

Research Article

Ya-Jun Gong¹  Wei Song¹  Li-Jun Cao¹  Shu-Jun Wei¹  You-Zhu Wang²  Bing-Yan Li²  Jia-Ying Zhu³  Ary Anthony Hoffmann⁴ 

[1] Institute of Plant and Environmental Protection, Beijing Academy of Agriculture and Forestry Sciences, 9 Shuguanghuayuan Middle Road, Haidian District, 100097, Beijing, China;Institute of Plant and Environmental Protection, Beijing Academy of Agriculture and Forestry Sciences, 9 Shuguanghuayuan Middle Road, Haidian District, 100097, Beijing, China;Key Laboratory of Forest Disaster Warning and Control of Yunnan Province, College of Forestry, Southwest Forestry University, 650224, Kunming, China;Key Laboratory of Forest Disaster Warning and Control of Yunnan Province, College of Forestry, Southwest Forestry University, 650224, Kunming, China;School of BioSciences, Bio21 Institute, The University of Melbourne, 3010, Melbourne, VIC, Australia;

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

DOI  :  10.1186/s12862-017-1116-7

 received in 2017-04-04, accepted in 2017-12-14,  发布年份 2017

来源: Springer

【 摘 要 】

BackgroundPopulations 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.ResultsStrong 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.ConclusionsOur 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.

【 授权许可】

CC BY   
© The Author(s). 2017