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Vasil'eva I. A. Vasil'ev A. G. Lyubashevskii N. M. Chibiryak M. V. Zakharova E. Yu. Tarasov O. V. 《Russian Journal of Ecology》2003,34(6):405-412
Monitoring of A. uralensis populations in Kamenskii raion, Sverdlovsk oblast, in 1992–2002 and in Kaslinskii raion, Chelyabinsk oblast, in 2000–2001 revealed an increase in the proportion and diversity of minor morphogenetic aberrations and abnormalities in the structure of the cranium along the axis of the Eastern Ural Radioactive Trace (EURT). The samples from the southern and northern parts of the EURT (contaminated with 90Sr to 500 and 4 Ci/km2, respectively) were characterized by directed deviations from the control with respect to the frequencies of phenes of nonmetric cranial traits and an increase in the level of their fluctuating asymmetry in young females, which is indicative of epigenetic rearrangements in populations living in a radioactive environment. 相似文献
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Vasil’ev A. G. Bol’shakov V. N. Vasil’eva I. A. Gorodilova Yu. V. Chibiryak M. V. 《Russian Journal of Ecology》2019,50(4):361-371
Russian Journal of Ecology - A simultaneous analysis of the chronographic variation of the mandible of bank vole (Clethrionomys glareolus Shreb.) in three longitudinally distant populations that... 相似文献
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Vasil’ev A. G. Vasil’eva I. A. Gorodilova Yu. V. Chibiryak M. V. 《Russian Journal of Ecology》2020,51(4):363-375
Russian Journal of Ecology - Methods of geometric morphometrics have been used to assess chronographic variation of morphofunctional traits in the same cenopopulations of the bank vole... 相似文献
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A. G. Vasil’ev I. A. Vasil’eva Yu. V. Gorodilova M. V. Chibiryak 《Russian Journal of Ecology》2010,41(2):153-158
To test the hypothesis that morphological disparity increases while taxonomic diversity decreases in a radioactively contaminated
environment, the relationship of these parameters was studied in communities (taxocenes) of rodents living in the Southern
Urals in the zone of influence from the Eastern Ural Radioactive Trace (EURT) (2003–2008). Young of the year of six rodent
species (98 samples) were examined in the background (control) area (0.2 Ci/km2) and in the impact area polluted with radionuclides from the EURT (750 Ci/km2). The dynamics of morphological disparity (MD), assessed with regard to average values of five exterior characters, was compared between the control and impact taxocenes.
Taxonomic (taxocenotic) diversity was estimated with the Shannon index (H). Morphological disparity was found to increase significantly at low rodent abundance (in conditionally unfavorable years)
and decrease at high abundance, with the value of MD in the impact taxocene being significantly higher. A negative correlation between MD and H was revealed (r = −0.70), in conformity with the above hypothesis. Discordance (difference in direction) of annual changes in the test parameters,
with H increasing while MD decreases (or vice versa) was observed in unfavorable years; it can be used as an indicator of conditions unfavorable for
rodent taxocenes. 相似文献
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Technogenic morphological variation of the pygmy wood mouse (Sylvaemus uralensis pall.) in the Urals
V. N. Bol’shakov A. G. Vasil’ev I. A. Vasil’eva Yu. V. Gorodilova N. E. Kolcheva N. M. Lyubashevskii M. B. Chibiryak 《Russian Journal of Ecology》2012,43(6):448-453
Methods of geometric morphometrics have been used to compare the ranges and directions of geographic and technogenic forms of variation in the morphology of the mandible in Ural populations of pygmy wood mice (Sylvaemus uralensis Pall.) exposed to different types of pollutants (radionuclides, fluorides, and toxic petrochemical products). The range of variation in the mandible morphology consequent to chronic radiation exposure in the zone of the Eastern Ural Radioactive Trace is commensurate to the range of geographic variation of the species observed in the Middle and Southern Urals. Unspecific manifestations of variation have been revealed, which apparently result from exposure to technogenic pollutants of different origin. A probable contribution of technogenic variation to rapid morphogenetic rearrangements in populations is discussed. 相似文献
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V. I. Starichenko N. M. Lyubashevskiy M. V. Modorov M. V. Chibiryak 《Russian Journal of Ecology》2014,45(3):231-241
Analysis and generalization of long-term monitoring data on the accumulation of 90Sr in the bone tissue of rodents inhabiting the East-Ural Radioactive Trace and the adjacent control area have shown that the skeletal content of 90Sr depends on the level of radionuclide contamination of soil in animal habitats. An assessment of animal migration between contaminated and clean areas by this criterion has shown that the proportion of migrants does not exceed 10%. On this basis, the conclusion is drawn concerning relative isolation of rodent populations in the EURT zone. 相似文献
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