Relative Efficiency of Some Mechanical Traps Used in the Study of the Tsetse Species, Glossina Pallidipes Austen
The biconical trap of Challier and Laveissièr was compared with Langridge’s box screen (LBS) and Moloo’s awning screen skirt (ASS) for relative efficiency in catching the tsetse species, Glossina pallidipes Austen, in two areas in Kenya. The dark blue biconical trap performed better than the ASS in one area, but both of them caught more males than females. In the other area, the sky blue version of the biconical gave higher yields than LBS and the white biconical. In both areas, the white biconical trap caught the highest proportion of old flies, while ASS caught the highest proportion of young flies. The biconical trap is preferable because it is collapsible, easy to handle and transport, and needs minimal manpower to operate, unlike the LBS and ASS.
Key WordsTrapping devices relative efficiency mechanical traps trap yields sex ratios age structure locality site effects and hunger stage
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