[Effects of sublethal doses of deltamethrin on the pair Glossina morsitans morsitans-Trypanosoma (Nannomonas) congolense].

The presence of Trypanosoma in Glossina morsitans morsitans induced a decrease in the physiological activity which is expressed in particular by a statistically higher mortality rate of infected flies. A similar effect appears with sublethal doses of deltamethrin either in infected or non infected insects. A cumulative activity of both effects was also observed in infected and treated flies.

[The use of screens in the anti-tsetse campaign in the forest zone].

After preliminary studies on the ecodistribution of Glossina palpalis s.l. in the sleeping sickness focus of Vavoua (Ivory Coast) trials with screens impregnated with decamethrine were carried out.

[The control of the vectors of the sleeping sickness caused by Trypanosoma gambiense Dutton (author's transl)].

In this review on tsetse control, the authors particularly stress the methods used at the present time against riverine species vectors of "Gambian sleeping sickness". The different kinds of insecticidal treatments, the means of ground and aerial application of residual or non-residual compounds as well as the planning of control campaigns are described. Besides, the authors show the present trends of the research on tsetse flies ecology, new insecticides, methods of spraying, biological control and the impact of tsetse control operations on the environment.