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From a case study to a theoretical basis for tsetse control

Published online by Cambridge University Press:  19 September 2011

David J. Rogers  and
Sarah E. Randolph
David J. Rogers
Affiliation:
Department of Zoology, South Parks Road, Oxford OX1 3PS, England
Sarah E. Randolph
Affiliation:
Department of Zoology, South Parks Road, Oxford OX1 3PS, England
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Abstract

The paper presents a way of estimating average daily mortality rates of female tsetse from ovarian age distributions. This technique was applied to monthly biconical trap samples of G. palpalis taken during and after insecticidal campaigns in the Bouaflé region of Ivory Coast. A clear inverse relationship is demonstrated between the annual mean number of females per trap per sample at 10 separate sites, and the mean annual mortality rates calculated for them. Local variation in the impact of insecticides is explained in terms of the grouping of the sites either side of a level of natural mortality above which tsetse populations cannot be sustained through reproduction alone.

A theoretical model for density dependent population growth is presented and applied to a particular control situation, that of the sterile insect release method. The model demonstrates that the effectiveness of any particular level of induced sterility (or mortality) is crucially determined by the natural resilience of the target population.

Keywords

Tsetse controlmodel for SIT
Type
Research Article
Information
International Journal of Tropical Insect Science , Volume 5 , Special Issue 5: Tsetse Behaviour and Population Ecology , October 1984 , pp. 419 - 423
Copyright
Copyright © ICIPE 1984

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References

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