Two of the deadliest mosquitoes have thrived thanks to their ties to humans
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Two of the deadliest mosquitoes have thrived thanks to their ties to humans
"A team of about 30 scientists, using modern sequencing techniques, has mapped the complete genome of 1,206 A. aegypti mosquitoes from 73 populations worldwide. With this wealth of information, they were able to reconstruct the genealogical tree and historical evolution of the species, which now lives in proximity to 4 billion people and, according to the World Health Organization, infects 390 million annually with dengue alone."
"Yet, not long ago in evolutionary terms, this dark-colored mosquito with white markings did not leave the jungles nor had it developed an appetite for human blood. A. aegypti emerged on the islands of the western Indian Ocean, entered Africa, spread there, and from there reached the Americas with the voyages of European discovery, summarizes Andrea Gloria-Soria, an evolutionary biologist at the Center for Vector Biology and Zoonotic Diseases at the Connecticut Agricultural Experiment Station in the United States,"
Genetic sequencing of 1,206 Aedes aegypti mosquitoes from 73 populations worldwide reconstructed the species' genealogy and historical evolution. The species now lives near four billion people and causes 390 million dengue infections annually, according to WHO. A. aegypti originated on islands of the western Indian Ocean, entered Africa, and reached the Americas with European voyages, evolving from jungle-dwelling populations into dark-colored, white-marked, human-biting, invasive forms. Modern sequencing mapped the complete genome and traced spread from the Americas to other tropical and subtropical regions. In parallel, Anopheles funestus developed resistance to insecticides as early as the 1960s.
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