Population variability in Chironomus (Camptochironomus) species (Diptera, Nematocera) with a Holarctic distribution: evidence of mitochondrial gene flow

Martin, J., Guryev, V. & Blinov, A., Oct-2002, In : Insect Molecular Biology. 11, 5, p. 387-97 11 p.

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Phylogenetic analysis of DNA sequences from mitochondrial (mt) genes (Cytochrome b and Cytochrome oxidase I) and one nuclear gene (globin 2b) was used for the investigation of Nearctic and Palearctic populations representing four Chironomus species of the subgenus Camptochironomus, namely C. biwaprimus, C. pallidivittatus, C. tentans sensu stricto and C. dilutus (the last two species constitute Holarctic C. tentans sensu lato). Phenograms constructed on the basis of mt sequences were not congruent with trees based on nuclear genes, or with morphological and cytological data. The mt tree divided the populations by continental region, rather than by the species groupings recognized by the other data sets. The incongruence is explained by mt gene flow resulting from hybridization between the sympatric species on each continent. Calculation of divergence times, based on the sequence data, suggest that C. tentans (s.l.) and C. pallidivittatus have both been in North America for about 2.5 My.

Original languageEnglish
Pages (from-to)387-97
Number of pages11
JournalInsect Molecular Biology
Issue number5
Publication statusPublished - Oct-2002
Externally publishedYes


  • Animals, Base Sequence, Chironomidae, Cytochrome b Group, DNA, Complementary, DNA, Mitochondrial, Electron Transport Complex IV, Globins, Mitochondria, Molecular Sequence Data, Phylogeny

ID: 15060184