title: Population genetic structure of Cheyletus malaccensis (Acari: Cheyletidae) in China based on mitochondrial COI and 12S rRNA genes.
abstract: Cheyletus malaccensis is a predatory mite widely distributed in grain storages. It has been regarded as an important biological control agent for pest mites. In this study, we investigated the population genetic structure of C. malaccensis distributed in China based on the partial regions of mitochondrial COI and 12S rRNA genes. We collected 256 individuals of C. malaccensis from stored grain in 34 sites of China. We detected 50 COI gene haplotypes and nine 12S rRNA gene haplotypes. There were three clades in the haplotype network and Bayesian and maximum parsimony phylogenetic trees based on COI sequences, and two based on 12S rRNA sequences. The clustering of haplotypes was not correlated with their geographical distributions. The analysis of molecular variance, AMOVA, indicated that the genetic differentiation between populations was relatively weak. The major genetic differentiation was found within populations. We suggest that the genetic structure of C. malaccensis observed in this study may be the result of long-term climate fluctuations and recent human disturbances.
authors.affiliation: College of Life Science, Nanchang University, Nanchang, 330031, China.|Center for Watershed Ecology, Institute of Life Science and Ministry of Education Key Laboratory of Poyang Lake Environment and Resource Utilization, Nanchang University, Nanchang, 330031, China.
authors.forename: Xiaoqiang
authors.initials: X
authors.lastname: Yang
authors.affiliation: College of Life Science, Nanchang University, Nanchang, 330031, China.
authors.forename: Qingtian
authors.initials: Q
authors.lastname: Ye
authors.affiliation: College of Life Science, Nanchang University, Nanchang, 330031, China.
authors.forename: Tianrong
authors.initials: T
authors.lastname: Xin
authors.affiliation: College of Life Science, Nanchang University, Nanchang, 330031, China.
authors.forename: Zhiwen
authors.initials: Z
authors.lastname: Zou
authors.affiliation: College of Life Science, Nanchang University, Nanchang, 330031, China. xiabin9@163.com.|Center for Watershed Ecology, Institute of Life Science and Ministry of Education Key Laboratory of Poyang Lake Environment and Resource Utilization, Nanchang University, Nanchang, 330031, China. xiabin9@163.com.
authors.forename: Bin
authors.identifier: http://orcid.org/0000-0002-9843-715X
authors.initials: B
authors.lastname: Xia
mesh_terms: D000818:Animals; D060829:Arthropod Proteins / Q000235:genetics*; D002681:China; D004272:DNA, Mitochondrial / Q000235:genetics*; D003576:Electron Transport Complex IV / Q000235:genetics*; D014644:Genetic Variation; D005828:Genetics, Population; D006239:Haplotypes; D008925:Mites / Q000145:classification / Q000235:genetics*; D024101:Mitochondrial Proteins / Q000235:genetics; D010802:Phylogeny; D012335:RNA, Ribosomal / Q000235:genetics*; D017422:Sequence Analysis, DNA
chemical_list: D060829:Arthropod Proteins; D004272:DNA, Mitochondrial; D024101:Mitochondrial Proteins; D012335:RNA, Ribosomal; C075526:RNA, ribosomal, 12S; D003576:Electron Transport Complex IV
keywords: 12S rRNA; COI; Cheyletus malaccensis; China; Migration ability; Population genetic structure