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458 Voles and lemmings (subfamily Arvicolinae) are one of the youngest and species rich groups of myo morphic rodents prevailing in different landscape zones of the northern hemisphere. Because of unprec edented fossil records, as well as rapid and continuing morphogenesis, they became leading forms in correla tion and biostratigraphy of late Cenozoic(More)
Phylogenetic analysis of the supraspecies relationships was carried out using partial sequences of two nuclear genes in the subfamily Arvicolinae, which is one of the youngest and species-rich groups of myomorph rodents. The analysis with the new data resolved the majority of polytomy nodes in the phylogenetic trees reported for Arvicolinae, suggesting a(More)
147 The purposes of this study were (1) to determine the proportion and geographic distribution of voles with the red-vole mitochondrial genome in the populations of bank voles and (2) to reveal interspecific hybrids. The main results of analysis of the mitochondrial (cytochrome b ) and nuclear molecular markers are as follows. (1) The distribution area of(More)
Phylogenetic analysis of supraspecies relationships in one of the most young and species rich group of myomorph rodents - subfamily Arvicolinae was carried out on the base of two nuclear genes. Results have shown that mole-voles - Ellobiusini, steppe voles - (Lagurini) and grey voles (Arvicolini) are sister groups. This divergence is the most late, third(More)
Przewalski's horses (PHs, Equus ferus ssp. przewalskii) were discovered in the Asian steppes in the 1870s and represent the last remaining true wild horses. PHs became extinct in the wild in the 1960s but survived in captivity, thanks to major conservation efforts. The current population is still endangered, with just 2,109 individuals, one-quarter of which(More)
544 † Highly polymorphic microsatellite DNA loci are effective markers of genetic and demographic processes in mammal populations. These processes are studied in terms of the spatial organization of populations and cyclic fluctuations in population sizes (Ehrich et al., 2001; Redeker et al., 2006). The microsatellite DNA variation in mammals and other(More)
The Pleistocene glacial cycles resulted in significant changes in species distributions, and it has been discussed whether this caused increased rates of population divergence and speciation. One species that is likely to have evolved during the Pleistocene is the Norwegian lemming (Lemmus lemmus). However, the origin of this species, both in terms of when(More)
544 Accidental artificial introduction of alien organ isms to water bodies via crossing biogeographical bar riers has become an urgent problem in the late 20th century in connection with exponential growth of the maritime traffic, primarily, tanker transporta tions [1]. According to experts' opinion, aquatic life mainly migrates over the planet in ballast(More)
Recent palaeogenetic studies indicate a highly dynamic history in collared lemmings (Dicrostonyx spp.), with several demographical changes linked to climatic fluctuations that took place during the last glaciation. At the western range margin of D. torquatus, these changes were characterized by a series of local extinctions and recolonizations. However, it(More)
Totally, 294 bank voles (Clethrionomys glareolus) and 18 red-backed voles (Cl. rutilus) from 62 sites of European Russia were studied. Incomplete sequences (967 bp) of the mitochondrial cytochrome b gene were determined for 93 Cl. glareolus individuals from 56 sites and 18 Cl. rutilus individuals from the same habitats. Analysis of the cytochrome b gene(More)