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Genetic diversity and biogeography of red turpentine beetle Dendroctonus valens in its native and invasive regions
Author(s) -
Cai YanWen,
Cheng XinYue,
Xu RuMei,
Duan DongHong,
Kirkendall Lawrence R.
Publication year - 2008
Publication title -
insect science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.991
H-Index - 45
eISSN - 1744-7917
pISSN - 1672-9609
DOI - 10.1111/j.1744-7917.2008.00213.x
Subject(s) - biology , genetic diversity , population bottleneck , population , phylogenetic tree , evolutionary biology , biological dispersal , genetic structure , demographic history , genetic variation , ecology , effective population size , genetics , allele , gene , demography , microsatellite , sociology
Sequences of 479 bp region of the mitochondrial COI gene were applied to detect population genetic diversity and structure of Dendroctonus valens populations. By comparing the genetic diversity between native and invasive populations, it was shown that the genetic diversity of Chinese populations was obviously lower than that of native populations with both indices of haplotype diversity and Nei's genetic diversity, suggesting genetic bottleneck occurred in the invasive process of D. valens , and was then followed by a relatively quick population buildup. According to phylogenetic analyses of haplotypes, we suggested that the origin of the Chinese population was from California, USA. Phylogenetic and network analysis of native populations of D. valens revealed strong genetic structure at two distinct spatial and temporal scales in North America. The main cause resulting in current biogeographic pattern was supposedly due to recycled glacial events. Meanwhile, a cryptic species might exist in the Mexican and Guatemalan populations.