Ecological genomics of preference for human hosts in the native range of the dengue mosquito
Fifer, J. E.; Sylla, M.; Ouedraogo, M.; Maiga, A.-A. M.; Sombie, A.; Coulibaly, B.; Djimde, B.; Konate, S. M.; Sawadogo, K.; Sidibe, S.; Isadibir, S.; Nelson, D.; Garba, Y. M.; Badolo, A.; Yaro, A. S.; Rose, N. H.
Show abstract
The arbovirus transmitting mosquito Aedes aegypti has African origins where it maintains generalist and human specialist feeding forms, the latter of which has recently expanded their range worldwide. These two different forms appear to be directly linked to discrete genetic lineages, where the relative proportion of each ancestry dictates a mosquitos standing on the human specialist-generalist behavior spectrum. Here we take a population genomics approach to develop a predictive model for describing the distribution of human specialist behavior across Africa. We show genome-wide ancestry is predictive of human specialist behavior, but a subset of the genome offers even greater predictability. We also show that an ecological model incorporating precipitation, temperature and human density explains the geographic patterning of human specialist behavior in Africa.
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