Emergence rate of 22- and 29-day tsetse (Glossina morsitans morsitans) pupae groups that were irradiated and transported. Pupae were irradiated and transported at either 22 or 29 days of age from pupation. Comparison of emergence rates between treatment groups at each age. The bars represent the minimum, first quartile, median, third quartile and maximum for each treatment. Bars indicated by the same lower-case letter or number did not differ significantly at the 5% level.