title: A mitogenome of the Chevrier's field mouse (Apodemus chevrieri) and genetic variations inferred from the cytochrome b gene.
abstract: The Chevrier's field mouse (Apodemus chevrieri) is an endemic species to China and is an important pest in agriculture and human diseases. In this study, the complete mitochondrial genome of this species was sequenced and its size was 16,298 bases (accession no.: HQ896683). The mitogenome structure was similar compared with other reported rodent mitochondrial genomes and includes 13 protein-coding genes, 2 rRNA genes (12S rRNA and 16S rRNA), 22 tRNA genes, and 1 control region. This was the first complete mitogenome sequenced in genus Apodemus. The phylogenetic analyses based on the sequences of 12 heavy-strand protein-coding genes demonstrated that A. chevrieri clustered together with genus Mus. Additionally, extremely high haplotype and nucleotide diversities (h=0.978, π=2.6%) were observed based on 44 mitochondrial cytochrome b (cyt b) gene sequences. This suggests adaptive divergence of this species to a variety of living habitats and potential refuges in the eastern margin of the Hengduan Mountains during the Quaternary ice ages. No population expansions or genetic bottlenecks were observed in demographic analyses. The phylogenetic analysis of cyt b sequences and haplotypes revealed a genetic differentiation between north and south populations. The divergence between north clade and south clade occurred probably in the middle Pleistocene 1.1815 million years ago (Mya) (95% highest posterior density 2.3189-0.2737 Mya), which was congruent with the periods of the most tense uplift events in the Tibetan Plateau.
authors.affiliation: Sichuan Key Laboratory of Conservation Biology on Endangered Wildlife, College of Life Sciences, Sichuan University, Chengdu, People's Republic of China.
authors.forename: Hao
authors.initials: H
authors.lastname: Yue
authors.forename: Zhenxin
authors.initials: Z
authors.lastname: Fan
authors.forename: Shaoying
authors.initials: S
authors.lastname: Liu
authors.forename: Yang
authors.initials: Y
authors.lastname: Liu
authors.forename: Zhaobin
authors.initials: Z
authors.lastname: Song
authors.forename: Xiuyue
authors.initials: X
authors.lastname: Zhang
mesh_terms: D000818:Animals; D001499:Bayes Theorem; D002681:China; D045303:Cytochromes b / Q000235:genetics*; D017931:DNA Primers / Q000235:genetics; D019143:Evolution, Molecular; D014644:Genetic Variation / Q000235:genetics*; D054629:Genome, Mitochondrial / Q000235:genetics*; D006239:Haplotypes / Q000235:genetics; D008957:Models, Genetic; D051189:Murinae / Q000235:genetics*; D010802:Phylogeny; D016133:Polymerase Chain Reaction; D017422:Sequence Analysis, DNA; D013045:Species Specificity
chemical_list: D017931:DNA Primers; D045303:Cytochromes b