Abstract
The nucleotide substitution rate of the mitochondrial cytochrome b gene is estimated on the basis of the genetic differences of charr populations (Salvelinus) with a known time of isolation (Upper Pleistocene–Holocene boundary) as 3.11 × 10–8 substitutions/position/year (95% confidence interval: 2.59 × 10–8–3.64 × 10–8). This estimate is about five times higher than the one obtained for this gene when considering long time intervals of divergence of salmonid fishes (phylogenetic rate)—0.66 × 10–8 (0.56 × 10–8–0.77 × 10–8). Thus, the rule of decrease in mtDNA nucleotide substitution rate estimates while moving from the recent calibration dates (thousand years) to the ancient ones (millions of years) applies also to the lineage of salmonid fishes.
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The study was supported within the framework of the research topic no. AAAA-A17-117062710083-0. The results were obtained using the equipment of the Far Eastern Computing Resource Center for Collective Usage, Institute of Automation and Control Processes, Far Eastern Branch of the Russian Academy of Sciences (https://www.cc.dvo.ru).
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Shedko, S.V. The Rate of Mitochondrial Cytochrome b Gene Evolution according to the Analysis of Recent (about 12 000 Years) Isolation of Charrs Salvelinus of Lake Kronotskoe. Russ J Genet 55, 1559–1563 (2019). https://doi.org/10.1134/S102279541909014X
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DOI: https://doi.org/10.1134/S102279541909014X