Insertion polymorphisms of SINE200 retrotransposons within speciation islands of Anopheles gambiae molecular forms.

Malaria Journal
Federica SantolamazzaAlessandra della Torre

Abstract

SINEs (Short INterspersed Elements) are homoplasy-free and co-dominant genetic markers which are considered to represent useful tools for population genetic studies, and could help clarifying the speciation processes ongoing within the major malaria vector in Africa, Anopheles gambiae s.s. Here, we report the results of the analysis of the insertion polymorphism of a nearly 200 bp-long SINE (SINE200) within genome areas of high differentiation (i.e. "speciation islands") of M and S A. gambiae molecular forms. A SINE-PCR approach was carried out on thirteen SINE200 insertions in M and S females collected along the whole range of distribution of A. gambiae s.s. in sub-Saharan Africa. Ten specimens each for Anopheles arabiensis, Anopheles melas, Anopheles quadriannulatus A and 15 M/S hybrids from laboratory crosses were also analysed. Eight loci were successfully amplified and were found to be specific for A. gambiae s.s.: 5 on 2L chromosome and one on X chromosome resulted monomorphic, while two loci positioned respectively on 2R (i.e. S200 2R12D) and X (i.e. S200 X6.1) chromosomes were found to be polymorphic. S200 2R12D was homozygote for the insertion in most S-form samples, while intermediate levels of polymorphism were shown...Continue Reading

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Citations

Mar 2, 2013·Parasitology·Claudia WitzigHilary Ranson
Apr 12, 2012·Proceedings of the National Academy of Sciences of the United States of America·Christopher M JonesCraig S Wilding
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Mar 17, 2016·Malaria Journal·Kevin Ochieng' OpondoMartin James Donnelly

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Methods Mentioned

BETA
PCR

Software Mentioned

Consensus
ClustalX
Primer
Ensemble
Fstat
BLAST
BLASTN

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