期刊
MOLECULAR BIOLOGY AND EVOLUTION
卷 24, 期 9, 页码 2132-2138出版社
OXFORD UNIV PRESS
DOI: 10.1093/molbev/msm143
关键词
speciation; mosquito; population genetics; natural selection
资金
- NIAID NIH HHS [AI40308] Funding Source: Medline
- NIGMS NIH HHS [R01 GM61773-01] Funding Source: Medline
Anopheles gambiae, the primary mosquito vector of malaria in sub-Saharan Africa, is divided into 2 sympatric incipient species known as M form and S form. Recent genomic analysis of each form revealed that differentiation between forms is clustered into 3 unlinked regions of the genome. Here, we expand the investigation of these genomic islands of speciation to multiple populations, including all of the genes across one of the islands. Differentiation between the M and S forms in 2 of the islands is complete across all individuals in all populations, confirming that the M and S forms are reproductively isolated taxa. Differentiation at the third island (on chromosome 2R) is limited to Cameroon populations. There is reduced variation in the M form in Cameroon at this location and increased divergence to the outgroup Anopheles arabiensis, supporting an association of adaptation with reproductive isolation.
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