Effect of sublethal dosages of insecticides on chikungunya virus susceptible and refractory strains of Aedes aegypti.
Southeast Asian J Trop Med Public Health
;
1994 Sep; 25(3): 536-42
Article
in English
| IMSEAR
| ID: sea-32323
ABSTRACT
Three strains of Aedes aegypti mosquitos viz (i) CRS, refractory to Chikungunya (CHIK) virus by oral route of infection but susceptible to DDT (2) CSS, susceptible to CHIK virus and also susceptible to DDT (3) CSS-DDTR, susceptible to CHIK virus but resistant to DDT, were examined for the effect of sublethal dosages of DDT and deltamethrin on their fecundity. Biochemical analysis showed that there was an increase in glutathione s-transferase activity in the CSS-DDTR strain which was associated with DDT resistance. There was an increase in acetylcholinesterase activity in the CRS strain, however it was not associated with resistance to all the three insecticides tested. No significant differences in the fecundity of these three strains were observed, though there was some increase in the number of non layers in CSS-DDTR strain after the treatment of DDT and mean number of eggs laid by CSS and CRS strains was slightly reduced (0.5 > p < 0.1) after the treatment with deltamethrin.
Full text:
Available
Index:
IMSEAR (South-East Asia)
Main subject:
Acetylcholinesterase
/
Pyrethrins
/
Female
/
Insecticide Resistance
/
Chikungunya virus
/
Aedes
/
DDT
/
Dose-Response Relationship, Drug
/
Fertility
/
Glutathione Transferase
Language:
English
Journal:
Southeast Asian J Trop Med Public Health
Year:
1994
Type:
Article
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