1. Screening for larvicidal activity in some Thai plants against four mosquito vector species.
- Author
-
Komalamisra N, Trongtokit Y, Rongsriyam Y, and Apiwathnasorn C
- Subjects
- Acorus chemistry, Alkanes analysis, Alkanes pharmacology, Animals, Cost-Benefit Analysis, Culicidae classification, Ethanol analysis, Ethanol pharmacology, Insect Vectors growth & development, Insecticides analysis, Insecticides pharmacology, Methanol analysis, Methanol pharmacology, Mosquito Control methods, Plant Extracts chemistry, Plant Extracts classification, Thailand, Culicidae drug effects, Insect Vectors drug effects, Larva drug effects, Plant Extracts pharmacology
- Abstract
Ninety-six ethanolic extracts from various parts of 84 Thai plant species were tested for their larvicidal activity against Aedes aegypti mosquitoes. Extracts from Rhinacanthus nasutus, Derris elliptica, Trigonostemon reidioides, Homalomena aromatica, Stemona tuberosa and Acorus calamus possessed high larvicidal activity, with LC50 values between 16.0 and 48.2 mg/l. Petroleum ether (PE) and methanol (MeOH) extracts were tested for their larvicidal activity against 4 mosquito vector species. The PE extract of R. nasutus exhibited larvicidal effects against Ae. aegypti, Culex quinquefasciatus, Anopheles dirus and Mansonia uniformis with LC50 values between 3.9 and 11.5 mg/l, while the MeOH extract gave LC50 values of between 8.1 and 14.7 mg/l. D. elliptica PE extract showed LC50 values of between 11.2 and 18.84 mg/l and the MeOH extract exhibited LC50 values between 13.2 and 45.2 mg/l.
- Published
- 2005