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The estimation of sampling biases for male tsetse

Published online by Cambridge University Press:  19 September 2011

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

A method is suggested for estimating sampling biases for male tsetse, based on the assumptions of the classical feeding cycle “model”. Sampling intensity for any particular method is denned as the catch of flies in different segments of the non-feeding phase of their current cycles, expressed as a percentage of the catch of flies that are just entering the feeding phase. Two examples are given, of Glossina palpalis in Nigeria and G. morsitans in Zambia. In both cases, sampling intensity is low just after feeding and increases slowly at first, and then rapidly as flies enter the feeding phase.

Flies in their feeding phase can apparently find and feed on hosts within one day. Feeding rates are inversely related to the fat content of flies entering the feeding phase of their current cycle, whilst rates of fat usage increase with this variable. These results suggest that it is important to distinguish between tsetse flight activity in general, and feeding behaviour in particular. Finally, it is emphasised that the analytical technique proposed depends on our still inadequate understanding of the field behaviour of flies.

Keywords

Tsetsesampling biasesfeeding cycle model
Type
Research Article
Information
International Journal of Tropical Insect Science , Volume 5 , Special Issue 5: Tsetse Behaviour and Population Ecology , October 1984 , pp. 369 - 373
Copyright
Copyright © ICIPE 1984

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References

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