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Radiolsotopes as metabolic labels for Glossina (Diptera: Glossinidae). II. The excretion of 137Cs under field conditions as a means of estimating energy utilisation, activity and temperature regulation

Published online by Cambridge University Press:  10 July 2009

P. Taylor
P. Taylor
Affiliation:
Zoology Department, University of Rhodesia, Box MP. 167, Mount Pleasant, Salisbury, Rhodesia*.
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Abstract

Males of Glossina morsitans Westw. and G. pallidipes Aust. labelled with radiocaesium (137Cs) were released in their natural habitat and later recovered on four occasions in the hot, hot wet and cold dry seasons in Rhodesia. The rate of excretion of the radioisotope was related to previous laboratory results to give estimates of activity, temperature regulation and energy utilisation in the field. It is considered that male G. morsitans are unlikely to fly for more than a few minutes per day. The hunger cycle duration is estimated as 3·5–4 days for G. morsitans males and 5·5 days for G. pallidipes males. Temperature regulation within the range 23–27°C was exhibited by both species, especially in the winter.

Type
Original Articles
Information
Bulletin of Entomological Research , Volume 68 , Issue 2 , July 1978 , pp. 331 - 340
Copyright
Copyright © Cambridge University Press 1978

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