[Influence of radioactive pollution on the character of the distribution of wild mouselike rodents according to the measure of lipid antioxidant activity in their organs].

The estimation of the degree of the radioactive contamination effect on the antioxidative status in tissues of rodents from natural populations is done by means of biometric methods. It is shown, that the character of distribution and variability of the lipids antioxidant activity (AOA) differs significantly depending of species and age of animals, the degree of contamination on areas where wild rodents were caught and time during which the radioactive factor affected. The change in character of the animals distribution in AOA of the brain lipids for the more radioresistant Clethrionomys glareolus Schreb, occurs the later than for the more radiosensitive Apodemus agrarius and especially for Microtus oeconomus Pall. The data obtained make possible to suppose, that the long-term effect of the low intensive ionizing radiation results the qualitative changes in the rodents natural populations state.