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Population genetics of Glossina morsitans submorsitans (Diptera: Glossinidae)

Published online by Cambridge University Press:  09 March 2007

E.S. Krafsur ,
M. Madsen ,
D.L. Wohlford ,
S. Mihok  and
N.T. Griffiths
E.S. Krafsur*
Affiliation:
Department of Entomology, Iowa State University, Ames, Iowa 50011-3222, USA
S. Mihok
Affiliation:
International Centre of Insect Physiology and Ecology (ICIPE), Nairobi, Kenya
N.T. Griffiths
Affiliation:
Department of Biology, Imperial College at Silwood Park, Ascot, Berks, SL5 7PY, UK
*
*Fax: 515 294 5957 E-mail: [email protected]
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Abstract

Breeding structure of Glossina morsitans submorsitans Newstead was evaluated by using genetic markers in mitochondrial DNA where diversity was scored at two loci in five natural populations from The Gambia and two populations in Ethiopia (form ugandensis Vanderplank), countries separated by c. 5450 km. Twenty six haplotype combinations were found, of which 17 were shared among two or more populations. Nine haplotypes were found in The Gambia and 23 haplotypes in Ethiopia. There were 12 unique haplotypes. Only six haplotypes were shared between the two countries. Populations in The Gambia (he = 0.26 ± 0.04) showed less than a third of the diversity of populations in Ethiopia (he= 0.84 ± 0.03). This suggests recovery from an earlier reduction in population. In a nested analysis of molecular variance of haplotype frequencies, 65%of the variance was due to differences within populations, 34% to differences between populations grouped by country, and only 1% was due to differences among populations within countries. In terms of gene flow, the fixation index FST= 0.35, which leads to an estimate by Wright’s island model of less than one reproducing migrant per generation exchanged between the eastern and western submorsitanspopulations. Nei’s genetic similarity measure showed a deep division between Gambian and Ethiopian populations.

Type
Research Article
Information
Bulletin of Entomological Research , Volume 90 , Issue 4 , August 2000 , pp. 329 - 335
Copyright
Copyright © Cambridge University Press 2000

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