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The performance of crosses between wild and laboratory-bred Glossina morsitans orientalis Vanderplank

Published online by Cambridge University Press:  10 July 2009

A. M. Jordan ,
T. A. M. Nash  and
M. A. Trewern
A. M. Jordan
Affiliation:
Tsetse Research Laboratory, University of Bristol, School of Veterinary Science, Langford, Bristol
T. A. M. Nash
Affiliation:
Tsetse Research Laboratory, University of Bristol, School of Veterinary Science, Langford, Bristol
M. A. Trewern
Affiliation:
Tsetse Research Laboratory, University of Bristol, School of Veterinary Science, Langford, Bristol
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Extract

A successful colony of Glossina morsitans orientalis Vanderplank was initiated at Langford in early 1967 with 94 females imported as pupae from Rhodesia. In September 1969, further pupae were received from Rhodesia. Experiments were undertaken in which the four possible combinations of crosses were made between males and females from the Langford colony and from the 1969 importation from Rhodesia. Females of Langford origin performed equally well irrespective of the origin of their mates and it is concluded that there is no evidence that the Langford colony of G. morsitans is either performing abnormally well, because of adaptation to the laboratory, or abnormally badly, because of adverse effects of inbreeding. The poorer performance of females of Rhodesian origin was manifested in poorer survival rather than a lower fecundity; it is attributed to adverse effects on these flies caused by handling of the pupae in the field and/or the stress of the journey from Rhodesia to Langford. It would seem that to avoid any risk of inbreeding in laboratory colonies, wild males only should be introduced periodically.

Type
Research Article
Information
Bulletin of Entomological Research , Volume 60 , Issue 2 , December 1970 , pp. 333 - 337
Copyright
Copyright © Cambridge University Press 1970

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References

Jordan, A. M. (in press). Inbreeding of Glossina austeni.—Proc. First Symp. Tsetse Fly Breeding under Laboratory Conditions, 1969.Google Scholar
Kernaghan, R. J. & Nash, T. A. M. (1964). A technique for the dispatch of pupae of Glossina and other insects by air from the tropics.—Ann. trop. Med. Parasit. 58, 355–358.Google Scholar
Nash, T. A. M., Jordan, A. M. & Boyle, J. A. (1968). The large-scale rearing of Glossina austeni Newst Newst. in the laboratory. IV.—The final technique.—Ann. trop. Med. Parasit. 62, 336–341.Google Scholar