• Between 1976 and 1978 a field trial of the sterile insect technique was conducted in Tanzania using males of Glossina morsitans morsitans Westw. that were reared, irradiated and packaged at Tanga.
• The experimental site was a 195-km2 area 110 km to the south of Tanga.
• Following two applications of endosulfan as an aerosol at an interval of 28 days, irradiated puparia of G. m. morsitans were released twice weekly at stations distributed throughout the experimental site.
• Each of the 120 release stations was serviced every 14 days with puparia which produced sterile adults synchronously within 30 min after placement.
• Over the 15-month experimental period, an average of 81 % control of G. m. morsitans was obtained, whereas G. pallidipes Aust., against which no releases were carried out, recovered to prespray levels within five months.

Synopsis from: Williamson, D. L., D. A. Dame, D. B. Gates, P. E. Cobb, B. Bakuli et al., 1983 Integration of insect sterility and insecticides for control of Glossina-morsitans-morsitans Westwood (Diptera, Glossinidae) in Tanzania .5. The impact of sequential releases of sterilized tsetse flies. Bulletin of Entomological Research 73: 391-404 https://doi.org/10.1017/s0007485300008993.