Phylogenetic Relationships among Holarctic Populations of Chironomus entis and Chironomus plumosus in View of Possible Horisontal Transfer of Mitochondrial Genes

Phylogenetic Relationships among Holarctic Populations of Chironomus entis and Chironomus... In eight Holarctic populations of two typical chironomid sibling species of the plumosus group, Chironomus entisandChironomus plumosus, nucleotide sequences of mitochondrial (cytb) and nuclear (gb2b) gene regions were examined. The phylogenetic trees reflecting the evolutionary histories of the nuclear and mitochondrial markers exhibited significant differences. On the tree based on the nuclear gene sequences the populations clustered according to their species affiliation, whereas on the tree based on the mitochondrial gene sequences the populations were grouped according to their geographic position. This discrepancy is probably explained by mitochondrial gene flow between sympatric species with incomplete reproductive isolation (sibling species). Based on our results together with the earlier data on nuclear and mitochondrial gene sequences of some other species from the phylogenetic group plumosus, a scheme of phylogenetic relationships within this group is proposed. This scheme is in many ways different from the traditional view on the evolutionary relationships among species of the plumosus group. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Genetics Springer Journals

Phylogenetic Relationships among Holarctic Populations of Chironomus entis and Chironomus plumosus in View of Possible Horisontal Transfer of Mitochondrial Genes

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Publisher
Kluwer Academic Publishers-Plenum Publishers
Copyright
Copyright © 2002 by MAIK “Nauka/Interperiodica”
Subject
Biomedicine; Human Genetics
ISSN
1022-7954
eISSN
1608-3369
D.O.I.
10.1023/A:1014842415628
Publisher site
See Article on Publisher Site

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