Fitness components in Drosophila melanogaster after the exposure to microwave radiation
Keywords:
short-wave radiation, Drosophila, fertility, dominant lethal mutations, pupal mortality, fitnessAbstract
The effects of microwave radiation on the expression of quantitative traits and mutation emergence in wild type line Oregon-R in Drosophila melanogaster were investigated. Two-day-old males were exposed (frequency of 36.64 GHz, the power density of 0.01, 0.1 and 1 W/m2, 10 seconds exposure) and then paired with non-irradiated females. The effects of radiation on egg production, portion of unfertilized eggs, frequency of dominant lethal mutations (DLM), pupal mortality and the number of offspring adults in two next generations were investigated. When the power density was 0.01 W/m2 no significant effects were observed. When the power density was 0,1 W/m2 the portion of unfertilized eggs increased. Egg production of the females in P generation was at the control level, and in the F1 generation decreased at the power density of 1 W/m2. No significant effects of irradiation on the number of offspring adults and pupal mortality were revealed in the F1 and F2 generations. At the power density of 1 W/m2 hormesis effect was found in the F1 generation by the frequency of DLM and the portion of unfertilized eggs. In the F2 generation, the effect was reversed.
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