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. 1999 May;8(2):287-97.
doi: 10.1046/j.1365-2583.1999.820287.x.

Analysis of genetic variability in Anopheles arabiensis and Anopheles gambiae using microsatellite loci

L Kamau  1 , W R Mukabana, W A Hawley, T Lehmann, L W Irungu, A A Orago, F H Collins
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Analysis of genetic variability in Anopheles arabiensis and Anopheles gambiae using microsatellite loci

L Kamau et al. Insect Mol Biol. 1999 May.

Abstract

We analysed genetic variability in Anopheles arabiensis and Anopheles gambiae populations using microsatellite loci to determine whether the Rift Valley restricts the flow of genes. Deviations from Hardy-Weinberg expectations were significant, and were most likely to be due to the high frequency of null alleles observed. An. arabiensis populations occurring between 40 and 700 km apart across the Eastern arm of the Rift Valley were not differentiated (pair-wise F(ST) range: 0.0033-0.0265, P > 0.05). Neither were An. gambiae populations from Asembo Bay and Ghana (F(ST): 0.0063, P > 0.05) despite a geographical separation of about 5000 km. In contrast, significant differentiation was observed between An. gambiae populations from Asembo Bay and Kilifi (about 700 km apart; F(ST) = 0.1249, P < 0.01), suggesting the presence of a barrier to gene flow.

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