Strengthening the Control of Mosquito Vectors in Cabo Verde

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OVT + Bti (0.62g), OVT + Acacia infusion (10%) + Bti and OVT + Salt (1,2%). These were

placed outdoors, in the shade, with a distance of 2 to 3 meters between them [19, 20]. The

four points in each location were named A, B, C and D. The OVTs were monitored weekly

for three months (August-October 2014). Their contents were reviewed, and the four OVTs

were rotated to pre-established points (A,B,C,D) within each location to eliminate bias.

Every two weeks the content of the traps were changed to ensure the effectiveness and

attractiveness of the acacia infusion. Eggs were counted using a stereoscopic microscope

(Lupa binocular Motic microscopes).

Weather data:

The National Institute of Meteorology and Geophysics (INMG-delegation from the City

of Praia) provided the weekly weather data (temperature, relative humidity and rainfall) of

the period in which the OVTs remained in the field, in Cabo Verde.

Figure 18.2: Delimitation of the study area (Palmarejo) and the locations of placed OVT.