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Fluctuating asymmetry (FA) in eight cranial measurements was studied in Microtus rossiaemeridionalis voles from two sites of the zone affected by the Totsk Radioactive Trace (TRT) and in the control population. In the affected populations, generalized mean population parameters of FA were significantly higher than in the control and tended to increase in relatively larger animals. The disturbance of ontogenetic homeostasis in voles from the TRT zone probably resulted from environmental stress caused by contamination with radionuclides (primarily plutonium), which entailed irradiation of many vole generations over more than 40 years. 相似文献
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The contents of ten metals in the bone and muscle tissues were studied in three fish species from a water body located in
the impact zone of a copper smelter. In the course of principal component analysis with “tissue” and “species” taken as instrumental
variables (IVs), a high proportion of unexplained IV variance was revealed for xenobiotic elements, and the procedure of optimal
scaling by the CATPCA method allowed their pattern to be estimated. It is proposed to use the unexplained variance of multidimensional
data on the chemical composition of organisms for identifying the pattern of xenobiotics in environmental objects. 相似文献
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