Genetic structure of Schrenck newt <Emphasis Type="Italic">Salamandrella schrenckii</Emphasis> populations by mitochondrial cytochrome <Emphasis Type="Italic">b</Emphasis> variation |
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Authors: | B A Malyarchuk M V Derenko D I Berman T Grzybowski N A Bulakhova A P Kryukov A N Lejrikh |
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Institution: | (1) Institute of Biological Problems of the North, Far East Division, Russian Academy of Sciences, Magadan, 685000, Russia;(2) Forensic Medicine Institute, Ludwik Rydygier Medical College, Bydgoszcz, 85-094, Poland;(3) Institute of Biology and Biophysics, Tomsk State University, Tomsk, 634050, Russia;(4) Institute of Biology and Soil Sciences, Far East Division, Russian Academy of Sciences, Vladivostok, 690022, Russia |
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Abstract: | The nucleotide sequence variation of the mitochondrial cytochrome b gene was studied in Schrenck newt Salamandrella schrenckii (Strauch, 1870) from populations of Primorye and the Khabarovsk region. Phylogenetic analysis revealed two haplotype clusters, southern cluster 1 and northern cluster 2, with a divergence of 3%. Analysis of the mtDNA and cytochrome b amino acid sequence variations made it possible to assume that the modern range of Schrenck newt was colonized from south Primorye northwards. In contrast to the southern cluster, the northern one demonstrated all the signs of demographic expansion (a unimodal distribution of pairwise nucleotide differences, specific results of tests for selective neutrality of mtDNA variation, and a good correspondence of genetic parameters to those expected from demographic expansion models). |
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Keywords: | mitochondrial DNA cytochrome b molecular evolution cryptic species |
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