Secondary Intergradation of Various Forms of Pidschian-Like Whitefishes (Coregonus lavaretus sensu lato, Coregonidae) in the Water Bodies of the Altai-Sayan Mountains

• Published in: Russian journal of genetics. Applied research Vol. 8; no. 2; pp. 178 - 189
• Main Authors: Bochkarev, N. A., Zuykova, E. I., Solovyev, M. M.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01.07.2018; Springer Nature B.V
• Subjects: Biomedical and Life Sciences; Biomedicine; Coregonus; Coregonus lavaretus; Fish; Human Genetics; Hybridization; Migration; Mitochondrial DNA; Nucleotide sequence; Phylogeny; Population genetics; River basins; Rivers; Spacer; 16S-ND1; genetics; morphology; mtDNA; Bolshoy Abakan River; Lake Karakul; Vilyui River; Todzha Lake; Lake Teletskoye; ITS1; principal component analysis
• ISSN: 2079-0597; 2079-0600
• DOI: 10.1134/S2079059718020028

The purpose of this work is to study the interaction of morphologically similar forms of pidschianlike whitefishes of the Coregonus lavaretus complex inhabiting a limited area in the riverine-lacustrine system of the Bolshoy Abakan River basin. Sequences of the 16S-ND1 fragment of the mitochondrial DNA and the first intermediate transcribed spacer ITS1 of the nuclear DNA are determined. It is shown that whitefish populations differ based on the gill raker numbers and the complex of plastic traits. Analysis of the 16S-ND1 fragment of the mtDNA revealed several divergent lineages, which is confirmed by the study of the ITS1 of the nDNA. As a result, it is shown that the riverine-lacustrine system is inhabited by two genetically divergent whitefish populations. The results of the study support the hypothesis of multiple hybridization between slightly differentiated forms/populations of whitefishes during the postglacial period. As a result of the studies carried out, the hypothesis about the origin and possible ways of migration of some phylogenetic lineages of whitefishes in the water bodies of the Yenisei River basin is proposed.