Ecology and Evolution (2018) 8, 7835-7848

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Panayiota Kotsakiozi, Benjamin R. Evans, Andrea Gloria-Soria, Basile Kamgang, Martin Mayanja, Julius Lutwama, Gilbert Le Goff, Diego Ayala, Christophe Paupy, Athanase Badolo, Joao Pinto, Carla A. Sousa, Arlete D. Troco and Jeffrey R. Powell (2018)
Population structure of a vector of human diseases: Aedes aegypti in its ancestral range, Africa
Ecology and Evolution 8 (16), 7835-7848
Abstract: Aedes aegypti, the major vector of dengue, yellow fever, chikungunya, and Zika viruses, remains of great medical and public health concern. There is little doubt that the ancestral home of the species is Africa. This mosquito invaded the New World 400-500 years ago and later, Asia. However, little is known about the genetic structure and history of Ae. aegypti across Africa, as well as the possible origin(s) of the New World invasion. Here, we use ~17,000 genome-wide single nucleotide polymorphisms (SNPs) to characterize a heretofore undocumented complex picture of this mosquito across its ancestral range in Africa. We find signatures of human-assisted migrations, connectivity across long distances in sylvan populations, and of local admixture between domestic and sylvan populations. Finally, through a phylogenetic analysis combined with the genetic structure analyses, we suggest West Africa and especially Angola as the source of the New World's invasion, a scenario that fits well with the historic record of 16th-century slave trade between Africa and Americas.
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Research topic(s) for pests/diseases/weeds:
molecular biology - genes


Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.
Aedes aegypti Georgia
Aedes aegypti Philippines
Aedes aegypti Vietnam
Aedes aegypti French Polynesia
Aedes aegypti Burkina Faso
Aedes aegypti Cameroon
Aedes aegypti Gabon
Aedes aegypti Kenya
Aedes aegypti Senegal
Aedes aegypti Uganda
Aedes aegypti Angola
Aedes aegypti South Africa
Aedes aegypti Costa Rica
Aedes aegypti Mexico
Aedes aegypti Colombia
Aedes aegypti Dominica
Aedes aegypti Reunion Island
Aedes aegypti Australia (NT+QLD)
Aedes aegypti Brazil (NE)