Aedes aegypti resistance to temephos during 2001 in several municipalities in the states of Rio de Janeiro, Sergipe, and Alagoas, Brazil
| Autor: | Denise Valle, Sidinei da Silva Soares, José Bento Pereira Lima, Ima Aparecida Braga |
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| Jazyk: | angličtina |
| Rok vydání: | 2004 |
| Předmět: |
Microbiology (medical)
Insecticides Veterinary medicine lcsh:Arctic medicine. Tropical medicine lcsh:RC955-962 organophosphate lcsh:QR1-502 vector control Context (language use) Aedes aegypti lcsh:Microbiology Insecticide Resistance resistance Temefos chemistry.chemical_compound Aedes Environmental protection Animals Larvicide biology Resistance (ecology) virus diseases biology.organism_classification Monitoring program dengue Geography chemistry Insecticide resistance Larva Biological Assay temephos Brazil |
| Zdroj: | Memórias do Instituto Oswaldo Cruz, Volume: 99, Issue: 2, Pages: 199-203, Published: MAR 2004 Memórias do Instituto Oswaldo Cruz., Vol 99, Iss 2, Pp 199-203 (2004) |
| Popis: | For more than 30 years temephos, an organophosphate insecticide, has been the sole larvicide used in Brazil in the control of Aedes aegypti. Organophosphates were also used for adult control, being replaced by pyrethroids since l999. In this same year, the Brazilian Health Foundation started the coordination of the Ae. aegypti Insecticide Resistance Monitoring Program. In the context of this program, our group was responsible for the detection of temephos resistance in a total of 12 municipalities in the states of Rio de Janeiro (RJ), Alagoas (AL), and Sergipe (SE) during 2001. In each municipality, a pool of mosquitoes collected from different districts was used, with the exception of Rio de Janeiro city, where eight districts have been separately evaluated. Exposure of larvae to the diagnostic dose of temephos revealed resistance in all localities examined, with mortality levels ranging from 4% (Pilares district, Rio de Janeiro, RJ) to 61.9% (Campos dos Goytacazes, RJ). Quantification of mortality showed resistance ratios from 6.1 (Aracaju, SE) to 16.8 (São Gonçalo, RJ and Penha district, Rio de Janeiro, RJ). The national dengue control program is presently using these data to subside insecticide resistance management. |
| Databáze: | OpenAIRE |
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