[Window traps and displacement of adult Simulium damnosum s.l. along a line of breeding sites in a forest zone of Côte d'Ivoire].

The displacement of adult black flies along a line of breeding sites has been studied in savannah area and in pre-forest zone. This paper presents the results of studies carried out in forest zone of Côte d'Ivoire. Interception traps made with sticky window traps were vertically displayed cross the river. The results showed that the displacement of adult S. damnosum s.l. along a line of breeding sites is correlated with the river flow. In a period of low discharge, adult black flies present a marked tendency to fly up stream. But in period of heavy discharge, they do not show any tendency; they may fly ever up stream or down stream. They fly essentially at the water level during the period of low flow and at a height between 0.5 to 1.5 m during heavy flow of the river.