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Survival and reproduction of Glossina morsitans Westw. in different types of cages exposed to variable and constant climatic conditions

Published online by Cambridge University Press:  10 July 2009

G. J. W. Dean ,
J. Paget  and
B. R. Williamson
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Extract

Investigations into the survival and breeding of the tsetse fly Glossina morsitans Westw. in large and small cage volumes under insectary and ambient climatic conditions in the Zambezi valley, and using oxen as host animals, are described. Under ambient conditions, flies emerging from puparia collected at Kariba, and held in the insectary, survived longer than flies emerging from puparia collected at Chirundu. Flies caught from the bush did not live as long as flies emerging from puparia held in the insectary, and generally lived longer under variable than under constant climatic conditions. The survival of ‘ wild ’ flies decreased during the hot, dry months under ambient conditions. Flies lived longer and were more reproductive in small cages than in large cages. Reproduction in small cages was higher when the flies were exposed to a variable climate instead of controlled conditions, but two colonies of ‘ wild ’ flies declined under both climatic conditions. Eeproduction was better in the small, standard cages (8 × 8 × 11 in.) than in Petana boxes, while Geigy 25’s were intermediate in this respect, but survival and mean puparial weights tended to be similar. The results show a complete failure to breed G. morsitans in large cages.

Type
Research Paper
Information
Bulletin of Entomological Research , Volume 58 , Issue 4 , May 1969 , pp. 773 - 785
Copyright
Copyright © Cambridge University Press 1969

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