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Phylogeography of the bark beetle Dendroctonus mexicanus Hopkins (Coleoptera: Curculionidae: Scolytinae)Author(s): Miguel A. Anducho-Reyes; Anthony I. Cognato; Jane L. Hayes; Gerardo Zuniga
Source: Molecular Phylogenetics and Evolution --- Doi:10.1016/j.ympev.2008.09.005
Publication Series: Scientific Journal (JRNL)
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DescriptionDendroctonus mexicanus is polyphagous within the Pinus genus and has a wide geographical distribution in Mexico and Guatemala. We examined the pattern of genetic variation across the range of this species to explore its demographic history and its phylogeographic pattern. Analysis of the mtDNA sequences of 173 individuals from 25 Mexican populations allowed to us identify 53 geographically structured haplotypes. High haplotype and low nucleotide diversities and Tajima's D indicate that D. mexicanus experienced rapid population expansion during its dispersal across mountain systems within its current range. The nested clade phylogeographic analysis indicates that the phylogeographic pattern of D. mexicanus is explained by continuous dispersion among lineages from the Sierra Madre Occidental, the Sierra Madre Oriental and the Trans-Mexican Volcanic Belt. However, we also observed isolation events among haplotypes from the Cofre de Perote/Trans-Mexican Volcanic Belt/Sierra Madre Oriental and the Trans- Mexican Volcanic Belt/Sierra Madre del Sur, which is consistent with the present conformation of mountain systems in Mexico and the emergence of geographical barriers during the Pleistocene.
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CitationAnducho-Reyes, Miguel A.; Cognato, Anthony I.; Hayes, Jane L.; Zuniga, Gerardo. 2008. Phylogeography of the bark beetle Dendroctonus mexicanus Hopkins (Coleoptera: Curculionidae: Scolytinae). Molecular Phylogenetics and Evolution. 49: 930-940.
KeywordsDendroctonus mexicanus, divergence time, range expansion, nucleotide diversity, nested clade phylogeographic analysis
- Genetic structure of Dendroctonus mexicanus (Coleoptera: Curculionidae: Scolytinae) in the trans-Mexican volcanic belt.
- The current status of the distribution range of the western pine beetle, Dendroctonus brevicomis (Curculionidae: Solytinae) in northern Mexico
- Genetic diversity, mating system, and conservation of a Mexican subalpine relict, Picea mexicana Martínez
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