Mosquito larvicidal and ovicidal properties of Eclipta alba(L.) Hassk(Asteraceae) against chikungunya vector,Aedes aegypti(Linn.)(Diptera:Culicidae)

作     者：M Govindarajan P Karuppannan 

作者机构：Division of Phytochemistry and Vector BiologyDepartment of ZoologyAnnamalai UniversityAnnamalai Nagar-608 002India 

出 版 物：《Asian Pacific Journal of Tropical Medicine》 (亚太热带医药杂志（英文版）)

年 卷 期：2011年第4卷第1期

页      面：24-28页

核心收录：

学科分类：090403[农学-农药学(可授农学、理学学位）] 1002[医学-临床医学] 09[农学] 0904[农学-植物保护] 

基　　金：the Department of Science and Technology(DST) New Delhi India for providing financial assistance for the present investigation 

主　　题：Eclipta alba Aedes aegypti Larvicidal activity Ovicidal activity 

摘      要：Objective:The present study deals with the investigation of larvicidal and ovicidal activities of benzene,hexane,ethyl acetate,methanol and chloroform leaf extract of Eclipta alba（***） against dengue vector,Aedes aegypti（***）.Methods:Twenty five earlyⅢinstar larvae of *** was exposed to various concentrations（50-300 ppm） and was assayed in the laboratory by using the protocol of WHO 2005;the 24 h LC50 values of the *** leaf extract was determined by Probit *** ovicidal activity,slightly modified method of Su and Mulla was *** ovicidal activity was determined against *** to various concentrations ranging from 100-350 ppm under the laboratory *** egg hatch rates were assessed 48 h post ***:The LC50 values of benzene,hexane,ethyl acetate,methanol and chloroform extract of *** against early third instar larvae of *** were 151.38,165.10, 154.88,127.64 and 146.28 ppm,*** larvicidal activity was observed in the methanol extract followed by chloroform,benzene,ethyl acetate and hexane *** mortality was observed in *** five solvent tested the methanol extract was found to be most effective for ovicidal activity against *** methanol extracts exerted 100%mortality （zero hatchability） at 300 ***:From the results it can be concluded the crude extract of *** was an excellent potential for controlling *** mosquito.