Insertion polymorphism of transposable elements and population structure of Anopheles gambiae M and S molecular forms in Cameroon
Article first published online: 15 NOV 2006
DOI: 10.1111/j.1365-294X.2006.03150.x
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How to Cite
BOULESTEIX, M., SIMARD, F., ANTONIO-NKONDJIO, C., AWONO-AMBENE, H. P., FONTENILLE, D. and BIÉMONT, C. (2007), Insertion polymorphism of transposable elements and population structure of Anopheles gambiae M and S molecular forms in Cameroon. Molecular Ecology, 16: 441–452. doi: 10.1111/j.1365-294X.2006.03150.x
Publication History
- Issue published online: 4 JAN 2007
- Article first published online: 15 NOV 2006
- Received 5 May 2006; revision accepted 1 September 2006
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Keywords:
- Anopheles gambiae;
- insertion polymorphism;
- molecular forms;
- population genetics;
- speciation;
- transposable elements
Abstract
The insertion polymorphism of five transposable element (TE) families was studied by Southern blots in several populations of the M and S molecular forms of the mosquito Anopheles gambiae sensu stricto from southern Cameroon. We showed that the mean TE insertion site number and the within-population insertion site polymorphism globally differed between the M and S molecular forms. The comparison of the TE insertion profiles of the populations revealed a significant differentiation between these two molecular forms (0.163 < ΦST < 0.371). We cloned several insertions of a non-LTR retrotransposon (Aara8) that were fixed in one form and absent in the other one. The only insertion that could be clearly located on a chromosome arm mapped to cytological division 6 of chromosome X, confirming the importance of this region in the ongoing speciation between the M and S molecular forms.

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