Spiridonova L.N., Lobkov E.G., Shedko S.V., Kryukov A.P.
В журнале Russian Journal of Genetics
Год: 2020 Том: 56 Номер: 4 Страницы: 454–459
Sequencing the complete mitochondrial genome of four individuals of two subspecies of black-billed capercaillie Tetrao parvirostris parvirostris (mainland population) and T. p. kamtschaticus (Kamchatka Peninsula), family Tetraonidae, was arranged for the first time. Genetic divergence between mainland and Kamchatka subspecies was estimated as 0.1%, which corresponds to the level of individual variability. Compared to high haplotype diversity, a low nucleotide polymorphism of mtDNA was revealed and absence of inter-subspecies genetic differentiation was shown. Such absence may reflect the youth of the Kamchatka isolate and/or conservation of the mitochondrial genome for the species as a whole. Analysis of a fragment of the nuclear gene OCA2, encoding the transmembrane P protein and affecting the coloration, revealed the identity of the subspecies of mainland and Kamchatka. Such a clear lack of divergence by mitochondrial and nuclear markers between the mainland and Kamchatka populations of the capercaillie contradicts their morphological differences. Appearance of an isolated population of the black-billed capercaillie in Kamchatka was probably caused by either shrinking of the mainland part of formerly large range of the species that created the gap, or recent invasion from the mainland.
