Larvicidal and repellent activities of Sida acuta Burm. F. (Family: Malvaceae) against three important vector mosquitoes
Autor(es): Govindarajan, Marimuthu
Resumo: To determine the larvicidal and repellent activities of Sida acuta Burm. F. (Family: Malvaceae)extract against Culex quinquefasciatus, Aedes aegypti and Anopheles stephensi. Methods: Twenty five late III instar larve of three mosquito species were exposed to various concentrations (15-90 mg/L) and were assayed in the laboratory by using the protocol of WHO 2005; the 24 11 LC(50) values of the Sida acuta leaf extract was determined following Probit analysis. The repellent efficacy was determined against three mosquito species at three concentrations viz., 1.0, 2.5 and 5.0 mg/cm(2) under the laboratory conditions. Results: Results showed varying degree of larvicidal activity of crude extract of Sida acuta against three important mosquitoes with LC50 values ranging between 38 to 48 mg/L. The crude extract had strong repellent action against three species of mosquitoes as it provided 100% protection against Anopheles stephensi for 180 min followed by Aedes aegypti (150 mitt) and Culex quinquefasciatus (120 min). Conclusions: From the results it can be concluded the crude extract of Sida acuta was an excellent potential for controlling Culex quinquefasciatus, Aedes aegypti and Anopleles stephensi mosquitoes.
Palavras-Chave: Sida acuta; Mosquito vectors; Larvicidal activity; Repellent activity
Imprenta: Asian Pacific Journal of Tropical Medicine, v. 3, n. 9, p. 691-695, 2010
Identificador do objeto digital: 10.1016/S1995-7645(10)60167-8
Descritores: Aedes aegypti - Larvicide ; Aedes aegypti - Repellent ; Aedes aegypti - Public health
Data de publicação: 2010
