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Phylogeography and population structure in the ant Formica exsecta (Hymenoptera, Formicidae) across Eurasia as reflected by mitochondrial DNA variation and microsatellites
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Conservation Biology and Genetics.
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Conservation Biology and Genetics.
2007 (English)In: Annales Zoologici Fennici, ISSN 0003-455X, Vol. 44, no 6, 462-474 p.Article in journal (Refereed) Published
Abstract [en]

Phylogeography and population structure of the ant Formica exsecta was studied across Eurasia by using mtDNA sequences and microsatellite genotypes. The phylogeny based on 1.5 kb mtDNA fragment including the cytochrome b and part of the ND6 gene showed significant division (1.63% of nucleotide divergence) between a haplotype from Tibet and all other haplotypes. Similar to findings in diverse array of species associated with forest in Eurasia, the mtDNA phylogeny revealed no evidence for vicariant events due to separation in different forest refugia over glacial periods. The haplotype network includes several small clades (with 2-4 haplotypes in each) with geographically limited distribution, but one geographical region may have received haplotypes from two or more of such clades. This pattern could indicate mixing of different gene pools during postglacial colonization of Europe from different forest refugia or from an ancestral source with some spatial genetic differentiation. The genealogy and the haplotype frequencies suggest postglacial colonization of Siberia from a single refugial source of limited size. Maternal and biparental DNA markers indicated a moderate but significant level of population differentiation (mtDNA Phi(ST) = 0.42, microsatellite F-ST = 0.13) across Eurasia. However, no correlation between genetic differentiation estimated for mtDNA and microsatellites was found among the populations. Considerable reduction in microsatellite genetic diversity was found in the small population of F. exsecta in England, giving some basis to classify this population as near threatened.

Place, publisher, year, edition, pages
2007. Vol. 44, no 6, 462-474 p.
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Biological Sciences
Identifiers
URN: urn:nbn:se:uu:diva-113028ISI: 000252271500007OAI: oai:DiVA.org:uu-113028DiVA: diva2:289693
Available from: 2010-01-25 Created: 2010-01-25 Last updated: 2010-02-17Bibliographically approved

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