TY - JOUR
T1 - Activity and residual effect of two formulations of lambdacyhalothrin sprayed on palm leaves to Rhodnius prolixus
AU - Mazariego-Arana, Miguel Angel
AU - Ramírez-San Juan, Eduardo
AU - Alejandre-Aguilar, Ricardo
AU - Nogueda-Torres, Benjamín
PY - 2002/4
Y1 - 2002/4
N2 - 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./m2) 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./m2 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./m2 and 3.752 mg a.i./m2) 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.
AB - 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./m2) 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./m2 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./m2 and 3.752 mg a.i./m2) 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.
KW - Chagas disease
KW - Chiapas
KW - Mexico
KW - Pyrethroids
KW - Rhodnius prolixus
KW - Vector control
UR - http://www.scopus.com/inward/record.url?scp=0036549909&partnerID=8YFLogxK
U2 - 10.1590/S0074-02762002000300014
DO - 10.1590/S0074-02762002000300014
M3 - Artículo
SN - 0074-0276
VL - 97
SP - 353
EP - 357
JO - Memorias do Instituto Oswaldo Cruz
JF - Memorias do Instituto Oswaldo Cruz
IS - 3
ER -