Nina A. Bulakhova

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We assessed the phylogeographic pattern of Siberian salamander (Salamandrella keyserlingii, Dybowski, 1870), which appear to be the most northern ectothermic, terrestrial vertebrate in Northern Eurasia, by sequence analysis of a 611-bp fragment of the mitochondrial cytochrome b gene in 159 specimens from different localities (Khabarovsk region, Sakhalin,(More)
The fecundity-advantage hypothesis (FAH) explains larger female size relative to male size as a correlated response to fecundity selection. We explored FAH by investigating geographic variation in female reproductive output and its relation to sexual size dimorphism (SSD) in Lacerta agilis, an oviparous lizard occupying a major part of temperate Eurasia. We(More)
The adaptations which allowed the Siberian salamander (Salamandrella keyserlingii Dybowski, 1870) to form its exceptionally large, polyzonal range (forest-steppe, forests, and southern tundras of Siberia and part of European Russia) remain insufficiently studied. We checked the hypothesis that S. keyserlingii was able to colonize the northern territories,(More)
The snout-vent length (SVL), a conventional measure of overall body size in lizards and snakes, is used in a wide variety of ecological, evolutionary, and taxonomical studies. Trends in SVL variation are often analysed using data from several researchers (observers), but possible confounding effects due to inter-observer differences in measurement protocols(More)
West Siberian reptiles were studied on the basis of the materials collected in forest, forest-steppe, and steppe zones of the Ob’ region during 12 years. Their abundance in certain biotopes has been determined. The relationship between the heterogeneity of reptile community and basic structure-forming environmental factors has been estimated, and a map of(More)
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(More)
We performed an analysis of nucleotide variation of the mitochondrial DNA (mtDNA) cytochrome b gene in populations of the Siberian salamander (Salamandrella keyserlingii Dybowski, 1870) from Khabarovsk krai; the Jewish autonomous oblast; Amur, Sakhalin, and Magadan oblasts; Sakha; and other regions of northern Eurasia. Two major phylogenetic haplotype(More)
Earthworms are a widespread and ecologically important group of animals, which has the highest total biomass in some ecosystems and often defines the composition of soil fauna. Earthworms are known to have high cryptic genetic diversity. In this study we attempted to estimate earthworm species diversity in the south of West Siberia by DNA barcoding. This(More)
The European common lizard, Zootoca vivipara, is the most widespread terrestrial reptile in the world. It occupies almost the entire Northern Eurasia and includes four viviparous and two oviparous lineages. We analysed how female snout-vent length (SVL), clutch size (CS), hatchling mass (HM), and relative clutch mass (RCM) is associated with the(More)
Frozen Siberian salamander safely tolerates long (45 days) stay at–35°C. Short-term (3 days) cooling down to–50°C was tolerable for 40% of adult individuals; down to–55°C, for 80% of the underyearlings. Generally, the salamanders lose about 28% of the body mass during the pre-hibernating period (before winter, at temperatures as low as 0°C) and during the(More)