Dispersal of Aedes aegypti and Aedes albopictus (Diptera: Culicidae) in an urban endemic dengue area in the State of Rio de Janeiro, Brazil

Memórias do Instituto Oswaldo Cruz

Nildimar Alves Honório²  Wellington Da Costa Silva¹  Paulo José Leite¹  Jaylei Monteiro Gonçalves¹  Leon Philip Lounibos¹  Ricardo Lourenço-de-oliveira² 

[1] ,Fiocruz Instituto Oswaldo Cruz Laboratório de Transmissores de HematozoáriosRio de Janeiro RJ ,Brasil

关键词: Aedes aegypti;    Aedes albopictus;    behavior;    dispersal;    rubidium;    dengue;    Rio de Janeiro;    Brazil;   

DOI  :  10.1590/S0074-02762003000200005

来源: SciELO

【 摘 要 】

Experimental releases of female Aedes (Stegomyia) aegypti and Aedes (Stegomyia) albopictus were performed in August and September 1999, in an urban area of Nova Iguaçu, State of Rio de Janeiro, Brazil, to estimate their flight range in a circular area of 1,600 m where 1,472 ovitraps were set. Releases of 3,055 Ae. aegypti and 2,225 Ae. albopictus females, fed with rubidium (Rb)-marked blood and surgically prevented from subsequent blood-feeding, were separated by 11 days. Rb was detected in ovitrap-collected eggs by atomic emission spectrophotometry. Rb-marked eggs of both species were detected up to 800 m from the release point. Eggs of Ae. albopictus were more numerous and more heterogeneously distributed in the area than those of Ae. aegypti. Eggs positively marked for Rb were found at all borders of the study area, suggesting that egg laying also occurred beyond these limits. Results from this study suggest that females can fly at least 800 m in 6 days and, if infected, potentially spread virus rapidly.

【 授权许可】

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