Extraction of mosquitocidals from Ocimum canum leaves for the control of dengue and malarial vectors
Journal Title: Asian Pacific Journal of Tropical Disease - Year 2014, Vol 4, Issue 0
Abstract
Objective: To assess the potentiality of Ocimum canum (O. canum) (Lamiaceae) in larvicidal, pupicidal, adulticidal, and repellent activities against the malarial vector, Anopheles stephensi (An. stephensi) and the dengue vector, Aedes aegypti (Ae. aegypti). Methods: The mosquitocidal activity of methanol extracts from O. canum against immature and adult An. stephensi and Ae. aegypti (L.) were studied. Standard WHO bioassays were used to evaluate the effectiveness of the plant extract against mosquitoes. Results: The methanol extract of O. canum was very effective against the immature stages of An. stephensi (LC50=193.280, 240.551, 303.409, 374.936 and pupa 469.547 mg/L) and Ae. aegypti (LC 50=242.071, 287.277, 332.668, 394.061 and pupa 457.879 mg/L). Smoke toxicity assay showed significant mortality rate against adult An. stephensi (86.6%) and Ae. aegypti (84.78%). The number of eggs laid by the females were strictly reduced after exposure to smoke. Conclusions: From the observed results we conclude that O. canum can be used as an effective larvicidal and repellent agent against the malarial and dengue vectors.
Authors and Affiliations
Keywords
Related Articles
- EP ID EP230575
- DOI 10.1016/S2222-1808(14)60675-7
- Views 61
- Downloads 0
Pathogenic viruses of the respiratory tract – A review
Viral infections of the respiratory tract are commonly caused by viruses and millions of people are infected every year all over the world. A range of viruses are associated with the infections of the respiratory tract....
Pharmacognostic and clinical aspects of Cydonia oblonga: A review
Cydonia oblonga Miller (C. oblonga) is considered as an important medicinal plant throughout the world. It is native to Mediterranean region and Central Asia having a long term history of medicinal and ethnobotanical use...
Effects of hydro-ethanol extract of Citrullus colocynthis on blood glucose levels and pathology of organs in alloxan-induced diabetic rats
Objective: To evaluated the differential effects of ethanol extraction of Citrullus colocynthis (C. colocynthis) on the blood glucose concentration and pathology of pancreas, liver, lungs, kidney and gastrointestinal tra...
Age is associated with latent tuberculosis in nurses
Objective: To evaluate risk factors for developing latent tuberculosis (LTB) in Thai nurses. Methods: A comparison study was conducted at Srinagarind Hospital, Khon Kaen, Thailand. Clinical factors were compared between...
Antimicrobial activity and composition of the volatiles of Cinnamomum tamala Nees. and Murraya koenigii (L.) Spreng. from Uttarakhand (India)
Objective: To examine the composition of Cinnamomum tamala and Murraya koenigii essential oils and their antimicrobial activities against nine microbial strains. Methods: Essential oils were obtained by hydrodistillation...