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efficacité de piège

International Journal of Tropical Insect Science (1)

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Efficiency of the biconical trap and biases in catches of female and tenerals of Glossina pallidipes, Austen
Mary L. A. Owaga
Journal:

Insect Science and Its Application / Volume 10 / Issue 5 / October 1989

Published online by Cambridge University Press:

19 September 2011, pp. 651-659

Print publication:

October 1989
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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.