[Dominance of Aedes aegypti over Aedes albopictus in the southeastern coast of Brazil].
OBJECTIVE
To assess infestation of Aedes aegypti and Aedes albopiticus and describe their association with weather conditions and container colonization in urban areas.


METHODS
The town of São Sebastião in the southeastern coast of Brazil was selected. It was used data from the Dengue and Yellow Fever Vector Control Program of the State of S o Paulo, Brazil, that encompasses entomological surveillance at strategic positions, traps and foci demarcation. Strategic positions sites are fixed sites with containers in adequate conditions for larvae growth. Statistical analysis was performed using Kruskal-Wallis test, Dwass-Steel-Chritchlow-Fligne test and Mann-Whitney test.


RESULTS
There was found an annual growth of positive traps and strategic positions of Ae. aegypti and a drop in Ae. albopictus population. An increase in immature Ae. aegypti and a drop of the other species were also seen. A gradual increase of positive dwellings for Ae. aegypti was noticed outgrowing Ae. albopictus population. There was a weak correlation of the Aedes species with abiotic factors. Higher numbers of immature mosquitoes of both species were found in artificial containers which could be eliminated.


CONCLUSIONS
The study showed Ae. aegypti was predominant in urban areas, indicating that its growth seems to have affected the coexistence with other species. Natural selection could be in place contributing to Aedes aegypti and albopictus species separation.
Passos
Ricardo A
RA
Laboratório de Culicídeos, Superintendência de Controle de Endemias, Taubaté, SP, Brasil. labpesqsr3@sucen.sp.gov.br
Marques
Gisela R A M
GR
Voltolini
Júlio C
JC
Condino
Maria Lúcia F
ML
D000330:Aedes / Q000145:classification; D000818:Animals; D001938:Brazil; D002980:Climate; D003715:Dengue / Q000635:transmission; D004197:Disease Reservoirs; D006798:Housing; D007300:Insect Control; D007303:Insect Vectors / Q000145:classification; D014505:Urban Population; D015004:Yellow Fever / Q000635:transmission