Persistence and residue activity of deltamethrin on indoor residual spraying surfaces against malaria vectors in southeastern Iran
- Author:
Mohammad Abtahi
;
Mansoreh Shayeghi
;
Mehdi Khoobdel
;
Hasan Vatandoost
;
Reza Mohammad Abaei
;
Kamran Akbarzadeh
- Publication Type:Journal Article
- Keywords:
Deltamethrin;
Persistence;
Pesticide residue;
Malaria vector;
Indoor residual spraying;
Insecticide;
Malaria
- From:Asian Pacific Journal of Tropical Biomedicine
2011;(z2):271-275
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To evaluate the efficacy of deltamethrin and find a relation between persistence and residue of this insecticide on the prevalent surfaces against malaria vectors in southeastern Iran. Methods:After indoor residual spraying on prevalent surfaces in studied areas (plaster and mud as absorbent surfaces, wood as non absorbent surface and filter paper as control) for malaria control, conical tests as a bioassay method and chromatographic method as an analytical method were used for evolution of persistence and residue of deltamethrin insecticide. Results were investigated statistically by ANOVA and Tukey-HSD tests for determining relations or differences between residue and persistence of deltamethrin. Results:According to the results, there was no significant difference between mortality rates from bioassay tests on different surfaces, and deltamethrin kept its utility to malaria vector control until 120 days after indoor residual spraying on these surfaces. In the case of residue, there was no significant relation between residue amounts and mortality rates on different surfaces, whereas this relation existed between residual amounts on filter papers and mortality rates from bioassay tests. Conclusions: This study shows that measurement of residue in filter papers is a suitable tool for evolution and dictum of efficiency of deltamethrin insecticide in indoor residual spraying for malaria control.
