title: Larvicidal activity of a neem tree extract (Neemarin) against mosquito larvae in the Islamic Republic of Iran.
abstract: An insecticide containing azadirachtin, a neem tree (Azadirachta indica) extract, was tested against mosquito larvae in the Islamic Republic of Iran under laboratory and field conditions. LC50 and LC90 values for Neemarin were 0.35 and 1.81 mg/L for Anopheles stephensi, the main local malaria vector, and 0.69 and 3.18 mg/L for Culex quinquefasciatus. The mortality in the pupal stage was significantly higher than the other stages. In field trials, using recommended dosages of 1 and 2 L/hectare, mortality of Anopheles spp. larvae was also higher than Culex spp. Prevention of adult emerged and pupal mortality was the main activity of this compounds. The maximum time of efficacy was 7 days at the highest concentration (2 L/hectare).
authors.affiliation: School of Public Health and Institute of Health Research, Tehran University of Medical Science, Tehran, Islamic Republic of Iran.
authors.forename: H
authors.initials: H
authors.lastname: Vatandoost
authors.forename: V M
authors.initials: VM
authors.lastname: Vaziri
mesh_terms: D000818:Animals; D000852:Anopheles; D003465:Culex; D005989:Glycerides; D006801:Humans; D007302:Insect Repellents; D007303:Insect Vectors; D007306:Insecticides; D007492:Iran / Q000453:epidemiology; D007814:Larva; D007928:Lethal Dose 50; D036701:Limonins; D008288:Malaria / Q000453:epidemiology / Q000469:parasitology / Q000517:prevention & control; D009032:Mosquito Control / Q000379:methods* / Q000592:standards; D012044:Regression Analysis; D013729:Terpenes; D013997:Time Factors; D014867:Water / Q000469:parasitology
chemical_list: D005989:Glycerides; D007302:Insect Repellents; D007306:Insecticides; D036701:Limonins; D013729:Terpenes; D014867:Water; C002443:neem oil; C010329:azadirachtin