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Sex ratio distortion in Glossina morsitans submorsitans Newstead (Diptera: Glossinidae)

Published online by Cambridge University Press:  10 July 2009

P. Rawlings  and
I. Maudlin
P. Rawlings
Affiliation:
Tsetse Research Laboratory, University of Bristol School of Veterinary Science, Langford, Bristol, BS18 7DU, UK
I. Maudlin
Affiliation:
Tsetse Research Laboratory, University of Bristol School of Veterinary Science, Langford, Bristol, BS18 7DU, UK
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Abstract

A laboratory colony of Glossina morsitans submorsitans Newst. originating from Nigeria exhibits an excess of females over males. The sex ratio distortion of more than two females to one male was studied by the maintenance of individual flies. Five males sired more than ten daughters without producing any sons when mated to several females, whilst other males fathered approximately equal numbers of male and female offspring; there was no evidence for selective abortion of male embryos. The presence of these ‘distorter’ males, which produce only female offspring, was found to cause the sex ratio distortion. The results are discussed with reference to data from the field which indicate that this genetic aberration is not confined to the laboratory; possible implications for chemical control programmes are assessed.

Type
Original Articles
Information
Bulletin of Entomological Research , Volume 74 , Issue 2 , June 1984 , pp. 311 - 315
Copyright
Copyright © Cambridge University Press 1984

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