Cost-in-use of insecticide impregnated barriers of traps and screens in the pastoral area of Sideradougou, Burkina Faso

Abstract

The CRTA of Bobo-Dioulasso (Burkina Faso) has initiated during four years an integrated campaign against Glossina in a pastoral area of 300 000 ha where 7200 insecticide impregnated screens were set up during the dry season followed by the release of irradiated males during the rainy season. During the preliminary phase, three barriers were built against riverain tsetse species. They consisted either of non impregnated or impregnated traps or impregnated screens (delta-methrine EC) placed at 100 m intervals. Regular observations for more than 3 years reveal the high efficiency of these systems whose setting up and running costs during the first year were about 200 000 FCFA/km for the non impregnated traps, 190 000 FCFA/km for the insecticide traps and 150 000 FCFA/km for the insecticide screens. During the following years, maintenance costs were 70 000 FCFA, 85 000 FCFA and 64 000 FCFA/km, respectively, per year. In these climatic areas and for this type of rivers and galery forests, the barrier is obtained with 7 km insecticide traps or 10 km capture traps against G. tachinoides and G. gambiensis. The combined use of traps and screens could be an interesting solution. The mixed use of screens and insecticide traps in an area infested with the savanna species, G. m. submorsitans, proved to be efficient, but too expensive in terms of setting up and maintenance. This cost could probably be reduced by using odorans attractants.