[Control by traps of Glossina fuscipes fuscipes for protecting livestock in Central African Republic. IV. Entomological, parasitological and zootechnical impact]. / La lutte par piégeage contre Glossina fuscipes fuscipes pour la protection de l'élevage en République centrafricaine. IV. Impact entomologique, parasitologique et zootechnique.

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. f. fuscipes and causes trypanosome prevalence to fall. These effects are shown by the improved hematocrit values and the reduced number of trypanocidal treatments administered. The impact on productivity is more difficult to assess over a short period; nevertheless, it seems clear from the parameters calculated.

[Tsetse and livestock in Central African Republic: retreat of Glossina morsitans submorsitans (Diptera, Glossinidae)]. / Tsé-tsé et élevage en République Centrafricaine: le recul de Glossina morsitans submorsitans (Diptera, Glossinidae).

In the early 1960s, the most part of the Central African Republic was located inside the distribution area of Glossina morsitans submorsitans Newst. Since the last distribution studies of this tsetse in CAR (in 1963), the number of cattle has increased from 400,000 to approximately two millions, mainly of the Mbororo zebu breed. To set up the present distribution of G. m. submorsitans a study by trapping has been carried out in 27 livestock areas, regarding about 1,200 pastoralists' settlements. Furthermore, north-south transects have been made using both trapping (with bipyramidal traps laid every 2,000 meters) and net-catching (within a car driving slowly). The result have shown the disappearance of G. m. submorsitans from the main livestock areas in the west (Bouar, Bozoum, Bocaranga, Batangafo, Bossangoa, Paoua), centre (Bossembélé, Bouca, Dékoa) and east (Bambari, Grimari, Ippy). The southern border of the distribution area has been moved upwards to the north by up to 400 kilometres in the west of the country. This important retreat is discussed. It leads to a huge increase in the pastures available for the Mbororo pastoralists. Their access is still restricted in the centre-north and in the east by wild game reserves where G. m. submorsitans remains.

[The distribution of the tsetse fly (Diptera: Glossinidae) in the humid savanna zone (Central African Republic). Evaluation of prospective entomological techniques]. / Etude de la répartition des tsé tsé (Diptera: Glossinidae) en zone de savane humide (République Centrafricaine). Evaluation de techniques de prospection entomologique.

Two trapping methods were compared during a survey of the distribution of tsetse flies in the Mbororo cattle breeding area of the Central African Republic: (a) several traps dispersed throughout the riverine forest galleries and remaining only one day at each site: (b) one sentinel trap placed at the cattle drinking point and remaining for several days. The latter method was more reliable and is therefore recommended. The concentration of tsetse flies at the drinking points was negligible during the rainy season.