Field Monitoring of Cypermethrin Residual Effect on the Mortality Rates of the Phlebotomine Sand Fly Lutzomyia longipalpis in the State of Paraíba, Brazil

Memórias do Instituto Oswaldo Cruz

Laura Ney Marcelino Passerat De Silans²  Jean-pierre Dedet¹  Jorge R Arias¹ 

[1] ,Fundação Nacional de Saúde da Paraíba

关键词: visceral leishmaniasis;    sand flies;    control;    insecticides;    pyrethroids;    cypermethrin;   

DOI  :  10.1590/S0074-02761998000300012

来源: SciELO

【 摘 要 】

In a visceral leishmaniasis endemic locality of northeast of Brasil where all settlements were treated with cypermethrin, a follow-up of Lutzomyia longipalpis populations was carried out by regular collections. The residual effect of the insecticide was studied using biological assays on three different types of walls.The results showed that the insecticides had an effect on intradomiciliar Lu. longipalpis populations limited to two months, and had no significant effect on peridomiciliar vector populations. The mortality rates of the tested sandflies were variable according to the type of wall.The decreasing of the insecticide effect was marked since the 3rd month, and mortality rates were identical whatever the type of wall since the 4th month. Unsufficient residual effect was detected after the 4th month.

【 授权许可】

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