Abstract
Gamma radiation effects on the development of the houseflies, M. domestica were investigated in the present study. As the doses of gamma radiation increased, a progressive increase in sterility percentage and a reduction in eggs-viability occurred. The highest sterility and non-hatched eggs percentages occurred when the pupae were irradiated with high doses such as 10 and 12 Gy. Mating of the resulting irradiated males and females or irradiated males with non-irradiated females caused the highest sterility and non-hatched eggs percentages. Males were more radiosensitive than their female counterparts.