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The design of target barriers for tsetse flies, Glossina spp. (Diptera: Glossinidae)

Published online by Cambridge University Press:  10 July 2009

M.O. Muzari  and
J.W. Hargrove
M.O. Muzari
Affiliation:
Tsetse and Trypanosomiasis Control Branch, Harare, Zimbabwe
J.W. Hargrove*
Affiliation:
ODA/IMPI Tsetse Research Project, Zimbabwe
*
Dr J.W. Hargrove, Tsetse and Trypanosomiasis Control Branch, Box CY52, Causeway, Harare, Zimbabwe.
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Abstract

Two small-scale experiments were carried out to test the effectiveness of narrow target barriers against re-invasion by Glossina pallidipes Austen and G. m. morsitans Westwood. The barriers consisted of either one or two lines of targets, with the targets placed at distances of c. 16 m apart within the lines. At this spacing the targets are so close together that a fly could scarcely fail to see at least one target as it crossed the barrier. Nonetheless, in both cases, flies penetrated the barriers with probability c. 10% as judged by catches in odour-baited traps on either side of the barrier. Narrow barriers, even at very high target density, are ineffective against tsetse invasion. This accords with previous theoretical predictions and mark-recapture studies, and suggests that wider barriers are needed for the prevention of re-invasion of cleared areas by tsetse.

Type
Review Article
Information
Bulletin of Entomological Research , Volume 86 , Issue 5 , October 1996 , pp. 579 - 583
Copyright
Copyright © Cambridge University Press 1996

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