Activity and Residual Effect of Two Formulations of Lambdacyhalothrin Sprayed on Palm Leaves to Rhodnius prolixus
Mem. Inst. Oswaldo Cruz
;
97(3): 353-357, Apr. 2002. mapas, tab, graf
Article
in English
| LILACS
| ID: lil-307427
ABSTRACT
The insecticidal activity and residual effect of two formulations of lambdacyhalothrin were evaluated with Rhodnius prolixus;laboratory and field tests were conducted in the State of Chiapas, Mexico. The results indicate that the lethal concentrations of the active ingredient of SC (LC50 = 2.37 and LC90 = 8.5 mg, a.i./mý) were 4-8 times than those with the insecticide WP applied on R. prolixus bugs in palm leaves, a common building material for thatched roofs. Other investigators in South America recommended applying 30 mg a.i./mý in porous materials; we obtained that the products WP and SC were 3.5 and 16 times more effective on palm leaves. Regarding the evaluation of the residual effects in field spraying, there was up to 15 months persistence after the application of WP in two doses (8.6 mg a.i./mý and 3.752 mg a.i./mý) with SC. We consider R. prolixus highly susceptible to the employed pyrethroids; they could be used to control this vector in the state of Chiapas, Mexico
Full text:
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Index:
LILACS (Americas)
Main subject:
Pyrethrins
/
Rhodnius
/
Mosquito Control
/
Insecticides
Limits:
Animals
Country/Region as subject:
Mexico
Language:
English
Journal:
Mem. Inst. Oswaldo Cruz
Journal subject:
Tropical Medicine
/
Parasitology
Year:
2002
Type:
Article
Affiliation country:
Mexico
Institution/Affiliation country:
Instituto Politécnico Nacional/MX
/
Universidad Aut¢noma de Chiapas/MX
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