Impact of water renewal on the residual effect of larvicides in the control of Aedes aegypti

Memórias do Instituto Oswaldo Cruz

Ricardo José Soares Pontes²  Fábio Fernandes Dantas Filho¹  Carlos Henrique Morais De Alencar²  Ana Cláudia Ferreira Regazzi¹  Luciano Pamplona De Góes Cavalcanti²  Alberto Novaes Ramos Jr²  José Wellington De Oliveira Lima¹ 

[1] ,Universidade Federal do Ceará Faculdade de Medicina Departamento de Saúde ComunitáriaFortaleza CE ,Brasil

关键词: Aedes;    dengue;    insect control;    insecticides;    organophosphate;    Bacillus thuringiensis;   

DOI  :  10.1590/S0074-02762010000200019

来源: SciELO

【 摘 要 】

This study was carried out to evaluate the residual effect of three larvicides under laboratory conditions for 100 days in Aedes aegypti. The larval mortality rate was measured without water renewal or with daily water renewal (80%). With temephos, there was 100% mortality in both groups until the 70th day. In the Bacillus thuringiensis israelensis (Bti)-WDG test, there was no difference during the first 20 days. With Bti-G, without water renewal, mortality was sustained above 90% for up to 35 days. The second experiment (with water renewal) reduced the mortality to below 90% after the first 20 days. When renewed water was provided, the residual effect was significantly lower for all larvicides.

【 授权许可】

CC BY   
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