Abstract
A large number of male and female tenerals and young non-teneral female G. pallidipes were attracted to the exterior of the trap but appeared not to enter the trap readily. About 20% of tenerals of both sexes that visited the trap were captured in the retaining cage and the remaining 80% on the outside. The sex ratio of flies stuck on the outside was 1:1 whereas that of flies from the retaining cage was 1:1.5 females:males. The efficiency of the trap for non-teneral G. pallidipes was about 39%. Direct observation using binoculars from a stationary vehicle about 10–15 m from the trap showed that the catching efficiency of the biconical trap was 30% for a total of the four categories of non-teneral females and males, and teneral females and males.
Résumé
Des femelles ténérales et jeunes femelles no-ténérales de G. pallidipes ont été attirées par la partie extérieure de piège mais n’apparaissait pas entrer promptement dans le piège. A peu près 20% de ténérales de 2 sexes qui visitaient le piège ont été capturés dans la cage de retention et les 80% restant à l’exterieur. Le rapport femelle/mâle des insectes coincés sur la partie extérieure était de 1:1, alors que Celui des insectes capturés dans la cage de retention était de 1:1.5. L’efficacité de piège biconique s’est averée d’être environ 39% pour la capture de G. pallidipes non-ténérales. L’observation direct à partir d’un vehicule stationné à une distance d’à peu près 10–15 mètres utilisant les binoculaires a montré que l’efficacité de piège était de 30% pour 4 catégories de femelles non-ténérales, de mâles non-ténérales, de femelles ténérales et de mâles ténérales.
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Owaga, M.L.A. Efficiency of the Biconical Trap and Biases in Catches of Female and Tenerals of Glossina Pallidipes, Austen. Int J Trop Insect Sci 10, 651–659 (1989). https://doi.org/10.1017/S1742758400021792
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DOI: https://doi.org/10.1017/S1742758400021792