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Feeding cycles and flight activity in field populations of tsetse (Diptera:Glossinidae)

Published online by Cambridge University Press:  10 July 2009

Sarah E. Randolph  and
D. J. Rogers
Sarah E. Randolph
Affiliation:
Department of Zoology, South Parks Road, Oxford, UK
D. J. Rogers
Affiliation:
Hope Department of Entomology, University Museum, Parks Road, Oxford, UK
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Abstract

Published laboratory measurements of the levels of fat and haematin in Glossina following a blood-meal were used to develop a prediction of the relationship between fat and haematin during the course of the feeding cycle. The fat-haematin relationship appears to be nearly linear over the later part of the feeding cycle. Data from three field studies onG. morsitans Westw.,G. swynnertoni Aust. and G. fuscipes Newst. were analysed in the way suggested by the prediction, and the observed rates of fat depletion were used to estimate flight activity of male flies towards the end of each feeding cycle. Results for G. palpalis (R.–D.) and G. tachinoides Westw., obtained in other studies with new electric sampling devices as well as by men with hand nets, illustrated particularly clearly the fat-haematin relationship over the whole of the feeding cycle. This was made possible by the electric traps catching more flies nearer to the start of their feeding cycle than the men with hand nets. A comparison between the different areas suggested that the fat level may trigger the onset of feeding behaviour inGlossina.

Type
Original Articles
Information
Bulletin of Entomological Research , Volume 68 , Issue 4 , December 1978 , pp. 655 - 671
Copyright
Copyright © Cambridge University Press 1978

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