Zadyra S. Influence of anthropogenic environmental pollution by heavy metals on natural population of mouse-like rodents

The thesis deals with solution of the actual scientific problem in understanding the influence of anthropogenic pollution on natural populations of mouse-like rodents (suborder Myomorpha). The researches was conducted in Kaniv Nature Reserve (Cherkassy region, Ukraine), National Nature Park "Holosiivsky" (Kyiv, Ukraine) and the district of influence of Tripillya Thermal Power Plant (TPP) (Kyiv region, Ukraine). Based on the study of content of heavy metals in the key components of the hornbeam forest ecosystem, the district of influence of Tripillya TPP found to be the most polluted area, compared with Kaniv Nature Reserve. The results of the research show that yellow-necked mouse (Apodemus flavicollis) and bank vole (Myodes glareolus) from the district of influence of Tripillya TTP shows reduced morphological-physiological indexes and fertility indicators, compared to background conditions. However it was found out that in polluted area the value of certain anatomical-physiological indexes increases, indicating signs of hypertrophy of the internal organs. The intensification of lipid peroxidation processes in liver tissues animals in contaminated areas was shown. The key patterns of accumulation of heavy metals in the body of mouse-like rodents from the studied areas are revealed. Thus, among mouse-like rodents under condition of anthropogenic pollution of natural ecosystems by heavy metals were observed complex changes of physiological-biochemical indexes at the level of the organism, and population level that are aimed, primarily, to the intensification of metabolism and mobilization of protective systems of the organism.