[Control by traps of Glossina fuscipes fuscipes for protecting livestock in Central African Republic. IV. Entomological, parasitological and zootechnical impact].

Neighteen Mbororo zebu herds were monitored to evaluate the impact of a trapping campaign against Glossina fuscipes fuscipes restricted to the watering places. This programme is part of the strategy of an integrated campaign against bovine trypanosomoses in the Central African Republic. Trapping reduces the densities of G.

Comparison of the susceptibility to deltamethrin of female Glossina morsitans morsitans Westwood, 1850 (Diptera: Glossinidae) uninfected and infected with Trypanosoma (Nannomonas) congolense Broden, 1904 (Kinetoplastida, Trypanosomatidae).

The susceptibility of pregnant female Glossina morsitans morsitans Westwood, 1850 infected with Trypanosoma (Nannomonas) congolense Broden, 1904 to deltamethrin, a synthetic pyrethroid insecticide, was compared to that of pregnant uninfected females. The results showed that infected flies have a significantly higher mortality rate than uninfected ones, and have a reduced longevity compared with uninfected control flies. These experiments suggest that the effects of trypanosome infection on Glossina should be further evaluated.

[Comparison of the longevity of tsetse flies (Glossina morsitans morsitans Westwood, 1850) infected with trypanosomes (Trypanosoma nannomonas congolense Broden, 1904) and uninfected tsetse flies].

This preliminary note results from a comparative study on susceptibility to pyrethroid insecticides of tsetse flies infected and not with trypanosomes. Trypanosoma infection increases the susceptibility to insecticides as previous study showed it (Golder et al., 1982, 1984).

[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.