02855nas a2200277 4500008004100000245015100041210006900192260001500261300001200276490000700288520194200295653002202237653002402259653001802283653002402301653002402325653001802349100002002367700002502387700003002412700002302442700002402465700002002489700003302509856003502542 2018 eng d00aLarviciding Activity of Acroptilon repens Extract against Anopheles stephensi, Culex pipiens and Culex quinquefaciatus under Laboratory Conditions0 aLarviciding Activity of Acroptilon repens Extract against Anophe cMarch 2018 a453-4560 v103 a

Introduction: Due to the emergence of insecticide resistance among the vectors of human diseases, there is a need to explore the use of plant extracts which are safe alternatives to conventional chemical larvicides used in control of vector-borne diseases. The aim of this study was to evaluate the larvicidal activity of Acroptilon repens against third instar larvae of Anopheles stephensi, Culex pipiens and Culex quinquefaciatus. Materials and Methods: The aerial parts of A. repens plants was dried in the shaded places for 3 days at 26-28°C. The leaves, flowers and stems were blended to crashed form using an electric blender. The larvicidal activity of total extract of A. repens were evaluated against third instar larvae stage of mosquito vectors, An. stephensi, Cx. pipiens and Cx. quinquefaciatus under laboratory conditions with 24h exposure period. Data were subjected to probit regression analysis in order to estimate the lethal concentrations for 50% and 90% mortality values. Result: The extract of A. repens exhibited significant larvicidal activity against third instar larvae of An. stephensi, with 24h LC50 of 0.2970 and LC90 of 2.2097 mg/l. The LC50 and LC90 values were 2.5047 and 24.7374 mg/l for Cx. pipiens and 2.9047 and 16.1459 mg/l for Cx. quinquefaciatus. Conclusion: The extract of A. repens can serve as a natural larvicide against An. stephensi, Cx. pipiens and Cx.quinquefaciatus. According to the larvicidal properties of this plant, formulating an extract of A. repens which is known as an abundant agricultural weed in Iran creates an alternative to chemical larvicides and providing a job opportunities.

10aAcroptilon repens10aAnopheles stephensi10aCulex pipiens10aCx. quinquefaciatus10aLarvicidal activity10aTotal extract1 aToolabi, Ramesh1 aAbai, Mohammad, Reza1 aSedaghat, Mohammad, Mehdi1 aVatandoost, Hassan1 aShayeghi, Mansooreh1 aTavakoli, Saeed1 aAghdam, Mohammad, Sistanizad uhttp://fulltxt.org/article/507