Kaplan–Meir estimator survival plot, based on the events of deaths (in >100 days), of Glossina morsitans morsitans males emerging from the irradiation and transportation (relative to the controls) of 22 day and 29 day-old groups. (a) Survival rate (in >100 days) of flies transported as pupae at the age of 22 days; (b) Survival rate (in >100 days) of flies transported as pupae at the age of 29 days; (c) Cumulative survival rate of flies transported as pupae at the age of 22 and 29 days combined; (d) Survival plot showing the survival rate of flies irradiated and transported as pupae at the age of 22 days and 29 days. Values indicated by ^*** differed significantly (p < 0.001) relative to the controls (unshipped – 0 Gy).