Journal
RUSSIAN JOURNAL OF GENETICS
Volume 53, Issue 8, Pages 875-884Publisher
PLEIADES PUBLISHING INC
DOI: 10.1134/S1022795417080038
Keywords
Coregonus lavaretus (L.) sensu lato; C. anaulorum; Issatschenko's whitefish; cisco-like whitefish from Lake Baunt; ecological forms; Siberia; Anadyr River; secondary intergradation
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Funding
- Russian Foundation for Basic Research [16-04-01708, 14-04-00926]
- Presidium of the Russian Academy of Sciences [22]
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Molecular genetic analysis of some ecological forms of whitefish belonging to the Coregonus lavaretus (L.) complex from different water bodies of Siberia revealed a high degree of differentiation between them. On the basis of the analysis of the mitochondrial DNA protein-coding ND1 gene, it was demonstrated that the previously described ecological forms of C. anaulorum, Yenisei River whitefish, or Issatschenko's whitefish (C. fluviatilis), and cisco-like whitefish from Lake Baunt were good biological species. Moreover, each ecological form was represented by a number of phylogenetic lineages, one of which was species-specific. The remaining lineages were characterized by the mitochondrial DNA of another whitefish species, usually, the most common in each geographic region. The results of genetic analysis demonstrated that the formation of modern ecological forms of Siberian pidschian-like whitefish was accompanied by natural introgressive hybridization. It is suggested that most of the modern pidschian-like whitefish species originated as a result of reticulate evolution.
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