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Wolbachia infection and dramatic intraspecific mitochondrial dna divergence in a fig wasp

Xiao, J.-H., Wang, N.-X., Murphy, R. W., Cook, J., Jia, L.-Y. and Huang, D.-W. (2012) Wolbachia infection and dramatic intraspecific mitochondrial dna divergence in a fig wasp. Evolution, 66 (6). pp. 1907-1916. ISSN 0014-3820

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To link to this item DOI: 10.1111/j.1558-5646.2011.01561.x


Mitochondria and Wolbachia are maternally inherited genomes that exhibit strong linkage disequilibrium in many organisms. We surveyed Wolbachia infections in 187 specimens of the fig wasp species, Ceratosolen solmsi, and found an infection prevalence of 89.3%. DNA sequencing of 20 individuals each from Wolbachia-infected and -uninfected subpopulations revealed extreme mtDNA divergence (up to 9.2% and 15.3% in CO1 and cytochrome b, respectively) between infected and uninfected wasps. Further, mtDNA diversity was significantly reduced within the infected group. Our sequencing of a large part of the mitochondrial genome from both Wolbachia-infected and -uninfected individuals revealed that high sequence divergence is common throughout the mitochondrial genome. These patterns suggest a partial selective sweep of mitochondria subsequent to the introduction of Wolbachia into C. solsmi, by hybrid introgression from a related species.

Item Type:Article
Divisions:Life Sciences > School of Biological Sciences > Ecology and Evolutionary Biology
ID Code:29025

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