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Estimation of the state of insect natural populations inhabiting Belarus regions with an increased radiation background


, : Estimation of the state of insect natural populations inhabiting Belarus regions with an increased radiation background. Vyestsi Akademii Navuk Byelarusi Syeryya Biyalahichnykh Navuk 0(1): 97-101

The data obtained by monitoring (1986-1994) on genetic and phenetic variability of insect natural populations. (Drosophila melanogaster, Leptinotarsa decemlineata) are presented. These populations inhabit the regions with natural (Berezinsky reserve) and with higher (from 1 to 40 Ci/km2) radiation background. As was shown, there was a greater number of Drosophila individuals with morphogenetic abnormalities (Dr. melanogaster), rare phenocomplexes and pattern variations on front-back and elytron emerged and imago melanization became more intensive (L. decemlineata) in the populations from the radiocontaminated regions. The results of estimating mutation load decreasing viability in the 2nd autosome in drosophila did not yet make it possible to draw a certain conclusion on the influence degree of higher environmental radiation background on population fitness. One can draw a conclusion on sensitivity of test of estimating the morphogenic variability level, the frequency of rare phenocomplexes pattern variations in insects, and the possibility of their application for bioindication of an increase in habitat radiation background.

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