Larvicidal activity of leguminous seeds and grains against Aedes aegypti and Culex pipiens pallens
Autor(es): Jang, Young-Su; Baek, Bong-Rae; Yang, Young-Cheol; Kim, Moo-Key; Lee, Hoi-Seon
Resumo: Larvicidal activity of methanol extracts of 26 leguminous seeds and 20 grains against early 4th-stage larvae of Aedes aegypti and Culex pipiens pallens was examined. At 200 ppm of the extracts from Cassia obtusifolia, Cassia tora, and Vicia tetrasperma, more than 90% mortality was obtained in larvae of Ae. aegypti and Cx. pipiens pallens. Extract of C. tora gave 86.7 and 100% mortality in the larvae of Ae. aegypti and Cx. pipiens pallens at 40 ppm but 59.2 and 78.3% mortality against larvae of Ae. aegypti and Cx. pipiens pallens at 20 ppm, respectively. At 40 ppm, extract of C. obtusifolia caused 51.4 and 68.5% mortality of the 4th-stage larvae of Ae. aegypti and Cx. pipiens pallens, respectively. Larvicidal activity of extract of C. obtusifolia was significantly reduced when used at 20 ppm. Further studies of these plants as possible agents for mosquito control are warranted.
Palavras-Chave: Human diseases; Efficiency; Insecticides; Insect larvae; Botanical resources; Chemical control; Disease control; Aquatic insects; Public health; Toxicity; Aedes aegypti; Culex pipiens pallens; Culicidae
Imprenta: Journal of the American Mosquito Control Association, v. 18, n. 3, p. 210-213, 2002.
Descritores: Aedes aegypti - Public health
Data de publicação: 2002
