Open AccessLow Gene Flow of Aedes aegypti between Dengue-Endemic and Dengue-Free Areas in Southeastern and Southern Brazil
Author(s) -
Magda Clara Vieira da Costa-Ribeiro,
Ricardo LourençodeOliveira,
AnnaBella Failloux
Publication year - 2007
Publication title -
american journal of tropical medicine and hygiene
Language(s) - English
Resource type - Journals
eISSN - 1476-1645
pISSN - 0002-9637
DOI - 10.4269/ajtmh.2007.77.303
Subject(s) - aedes aegypti , dengue fever , gene flow , dengue hemorrhagic fever , biology , population , aedes , geography , dengue virus , virology , ecology , gene , genetic variation , genetics , environmental health , larva , medicine
We present a population genetic study of Aedes aegypti in Brazil using isoenzyme markers. Four polymorphic loci were used to examine 11 mosquito collections at four periods in 2003. Samples from a dengue-endemic area (southeastern region) and a dengue-free area (southern region) connected by an important network of roads and railways were analyzed. The degree of genetic differentiation observed between populations is consistent with limited gene flow between them. There was no evidence of passive dispersion of Ae. aegypti by vehicles among the different routes linking metropolitan areas.
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