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Please use this identifier to cite or link to this item: http://hdl.handle.net/1807/8390

Title: Longitudinal evaluation of repellent activity of Ocimum gratissimum (Labiatae) volatile oil against Simulium damnosum
Authors: Usip, L. P. E.
Opara, K. N.
Ibanga, E. S.
Atting, I. A.
Keywords: Ocimum gratissimum - blackfly Simulium damnosum - repellent activity
Issue Date: 31-Dec-2006
Publisher: Fundação Oswaldo Cruz, Fiocruz
Citation: Memórias do Instituto Oswaldo Cruz (ISSN: 1678-8060) Vol 101 Num 2
Abstract: To determine the repellent activity of Ocimum gratissimum volatile oil against Simulium damnosum (blackflies), a 12 month (January-December 2003) field study was conducted in three onchocerciasis endemic communities (Idomido, Obio camp, and Ikot Adaha) in Ini Local Government Area of Akwa Ibom State, Nigeria. The result revealed that topical application of 20% (v/v) concentration of the oil with liquid paraffin as a base, reduced the biting rate of S. damnosum by 90.2, 81.6, and 79.7%, in Idomido, Obiocamp, and Ikot Adaha respectively. The oil gave protection against the bite of S. damnosum for at least 3 h. A total of 710 adults S. damnosum were caught by individuals treated with Ocimum oil, as against 4296 caught by the control group. When the flies caught by the treated individuals were dissected none of them was infected with microfilariae of Onchocerca volvulus . Human-vector contact and onchocerciasis transmission could be reduced by the topical application of the volatile oil during the peak biting periods of the vector.
URI: http://hdl.handle.net/1807/8390
Other Identifiers: http://www.bioline.org.br/abstract?id=oc06035
Rights: Copyright 2006 - Instituto Oswaldo Cruz - Fiocruz.
Appears in Collections:Bioline International Legacy Collection

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