Larvicidal activity of few select indigenous plants of North East India against disease vector mosquitoes (Diptera: Culicidae).

Autor(es): Dohutia C; Bhattacharyya D R; Sharma S K; Mohapatra P K; Bhattacharjee K; Gogoi K; Gogoi P; Mahanta J; Prakash A

Resumo: Mosquitoes are the vectors of several life threatening diseases like dengue, malaria, Japanese encephalitis and lymphatic filariasis, which are widely present in the north-eastern states of India. Investigations on five local plants of north-east India, selected on the basis of their use by indigenous communities as fish poison, were carried out to study their mosquito larvicidal potential against Anopheles stephensi (malaria vector), Stegomyia aegypti (dengue vector) and Culex quinquefasciatus (lymphatic filariasis vector) mosquitoes. Crude Petroleum ether extracts of the roots of three plants viz. Derris elliptica, Linostoma decandrum and Croton tiglium were found to have remarkable larvicidal activity; D. elliptica extract was the most effective and with LC50 value of 0.307 ?g/ml its activity was superior to propoxur, the standard synthetic larvicide. Half-life of larvicidal activity of D. elliptica and L. decandrum extracts ranged from 2-4 days.

Imprenta: Tropical Biomedicine, v. 32, n. 1, p. 17-23, 2015

Descritores: Aedes aegypti - Larvicide ; Aedes aegypti - Dengue ; Aedes aegypti - Public health

Data de publicação: 2015