Studies on the efficacy of deltamethrin applied to cattle for the control of tsetse flies (Glossina spp.) in southern Africa

The tsetse fly (Glossina spp.) inhabits 11 million km2 of Africa (Greekmore, 1989) where it is responsible for the transmission of trypanosomosis to man and animals. Because of its slow rate of reproduction, with females producing only four to five pupae per annum, control of the tsetse fly is the best means of controlling trypanosomosis. A number of different methods have been and are used but, whilst successes have been achieved, a long term solution has not been found.