Tracing the origin of the early wet-season Anopheles coluzzii in the Sahel.

ABSTRACT: In arid environments, the source of the malaria mosquito populations that re-establish soon after first rains remains a puzzle and alternative explanations have been proposed. Using genetic data, we evaluated whether the early rainy season (RS) population of Anopheles coluzzii is descended from the preceding late RS generation at the same locality, consistent with dry season (DS) dormancy (aestivation), or from migrants from distant locations. Distinct predictions derived from these two hypotheses were assessed, based on variation in 738 SNPs in eleven A. coluzzii samples, including seven samples spanning 2 years in a Sahelian village. As predicted by the "local origin under aestivation hypothesis," temporal samples from the late RS and those collected after the first rain of

SUBMITTER: Lehmann T 

PROVIDER: S-EPMC5511357 | biostudies-literature | 2017 Aug

REPOSITORIES: biostudies-literature