X-Ray induced sterility, dominant lethality and inherited semisterility in Anopheles pharoensis Theo (Dipt., Culicidae)

2009

Males 3-days old of the mosquito Anopheles pharoensis were x-irradiated with doses from 500 till 5000 r at a dose rate of 108 r/min and crossed immediately after irradiation with untreated virgin females. Sterility was calculated in the first three successive egg batches. Dose response was represented by a linear sterility curve with rapid increase in lower doses. The percent of induced dominant lethality was shown mainly in the egg stage of the offspring by a lethality curve almost parallel to the sterility one. The hatched larvae were reared to F 1 adults. All individuals of F 1 resulting from doses 1, 2 and 3 kr were back crossed to the other sex, mass mated for three days and the female…