Insect Science (2008) 15, 291-301

Yan-Wen Cai, Xin-Yue Cheng, Ru-Mei Xu, Dong-Hong Duan and Lawrence R. Kirkendall (2008)
Genetic diversity and biogeography of red turpentine beetle Dendroctonus valens in its native and invasive regions
Insect Science 15 (4), 291-301
Abstract: 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.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Lawrence R. Kirkendall

Research topic(s) for pests/diseases/weeds:
molecular biology - genes

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Dendroctonus valens		U.S.A. (SW)
	Dendroctonus valens		Guatemala
	Dendroctonus valens		Mexico
	Dendroctonus valens		U.S.A. (NW)
	Dendroctonus valens		U.S.A. (mid N)
	Dendroctonus valens		U.S.A. (NE)
	Dendroctonus valens		China (NE)