Mosquito larvicidal properties of Orthosiphon thymiflorus(Roth)Sleesen.(Family:Labiatae)against mosquito vectors,Anopheles stephensi,Culex quinquefasciatus and Aedes aegypti(Diptera:Culicidae)
Mosquito larvicidal properties of Orthosiphon thymiflorus(Roth)Sleesen.(Family:Labiatae)against mosquito vectors,Anopheles stephensi,Culex quinquefasciatus and Aedes aegypti(Diptera:Culicidae)作者机构:Division of EntomologyDepartment of ZoologySchool of Life SciencesBharathiar UniversityCoimbatore-641046Tamil NaduIndia P.G.Research & Department of Advanced Zoology and BiotechnologyLoyola CollegeNungambakkamChennai-600 034Tamil NaduIndia Center for MedicalAgriculturaland Veterinary EntomologyUSDA-ARS1600 SW 23rd DriveGainesvilleFL 32608USA
出 版 物:《Asian Pacific Journal of Tropical Medicine》 (亚太热带医药杂志(英文版))
年 卷 期:2012年第5卷第4期
页 面:299-305页
核心收录:
学科分类:1004[医学-公共卫生与预防医学(可授医学、理学学位)] 1002[医学-临床医学] 100401[医学-流行病与卫生统计学] 10[医学]
基 金:the Department of Science and Technology(DST),Govt.of India New Delhi,India Tamil Nadu State Council for Science and Technology(TNSCST), Chennai,Tamil Nadu for providing financial support for the present work
主 题:Orthosiphon thymiflorus Anopheles stephensi Aedes aegypti Culex quinquefasciatus Larvicidal activity
摘 要:Objective:To determine the mosquito larvicidal activities of hexane,chloroform,ethyl acetate, acetone and methanol leaf extract of Orthosiphon thymiflorus(O.thymiflorus) against Anopheles stephensi(An.stephensi),Culex quinquefasciatus(Cx.quinquefasciatus) and Aedes aegypti (Ae.aegypti).Methods:The larvicidal activity was assayed against three mosquito species at various concentrations ranging from(50-450 ppm) under the laboratory conditions.The LC50 and LC90value of the O.thymiflorus leaf extract was determined by Probit analysis.Results:The LC50 values of hexane,chloroform,ethyl acetate,acetone and methanol extract of O.thymiflorus third instar larvae of An.stephensi were LC50= 201.39,178.76,158.06,139.22 and 118.74 ppm; Cx.quinquefasciatus were LC50=228.13,209.***.183.35,163.55 and 149.96 ppm and Ae.aegypti were LC50=215.65,197.91,175.05,154.80 and 137.26 ppm,respectively.Maximum larvicidal activity was observed in the methanolic extract followed by acetone,ethyl acetate chloroform and hexane extract.The larval mortality was observed after 24 h exposure.No mortality was observed in control.Conclusions:The present results suggest that the effective plant crude extracts have potential to be used as an ideal eco-friendly approach for the control of mosquito vectors.This study provides the first report on the larvicidal activity of this plant crude solvent extract of against An.stephensi,Cx.quinquefasciatus and Ae.aegypti mosquitoes.