Comparisons of host mitochondrial, nuclear and endosymbiont bacterial genes reveal cryptic fig wasp species and the effects of Wolbachia on host mtDNA evolution and diversity |
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Authors: | Xiao-Jing Sun Jin-Hua Xiao James M Cook Gui Feng Da-Wei Huang |
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Affiliation: | (1) Key laboratory of Zoology Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, PR China;(2) Graduate School of the Chinese Academy of Sciences, Beijing, 100039, PR China;(3) School of Biological Sciences, University of Reading, Reading, Berkshire, RG6 6BX, UK;(4) College of Life Sciences, Hebei University, Baoding, 071002, PR China |
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Abstract: | Background Figs and fig-pollinating wasp species usually display a highly specific one-to-one association. However, more and more studies have revealed that the "one-to-one" rule has been broken. Co-pollinators have been reported, but we do not yet know how they evolve. They may evolve from insect speciation induced or facilitated by Wolbachia which can manipulate host reproduction and induce reproductive isolation. In addition, Wolbachia can affect host mitochondrial DNA evolution, because of the linkage between Wolbachia and associated mitochondrial haplotypes, and thus confound host phylogeny based on mtDNA. Previous research has shown that fig wasps have the highest incidence of Wolbachia infection in all insect taxa, and Wolbachia may have great influence on fig wasp biology. Therefore, we look forward to understanding the influence of Wolbachia on mitochondrial DNA evolution and speciation in fig wasps. |
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