Please use this identifier to cite or link to this item: http://hdl.handle.net/11189/2018
Title: In vitro anti-tick properties of essential oil of Tagetes minuta L. (Asteraceae) on Hyalomma rufipes (Acari: Ixodidae
Authors: Nchu, Felix 
Magano, SR 
Elof, Jacobus N 
Keywords: Anti-tick;Asteraceae;Hyalomma rufipes;Essential oil;Gas chromatography
Issue Date: 2013
Source: Nchu, F., Magano, S.R. & Eloff, J.N. 2012. In vitro anti-tick properties of the essential oil of Tagetes minuta L.(Asteraceae) on Hyalomma rufipes (Acari: Ixodidae). Onderstepoort Journal of Veterinary Research, 79(1): 01-05. [https://doi.org/10.4102/ojvr.v79i1.358]
Abstract: In this study we examined the anti-tick properties of the essential oil of Tagetes minuta L. (Asteraceae: Asterales) against Hyalomma rufipes ticks. We obtained the essential oil of T. minuta by hydro-distillation of a combination of fresh flowers, leaves and soft stems, and analysed these by using gas chromatography (GC) and gas chromatography-linked mass spectrometry (GC-MS). The oil had a high percentage of monoterpenes and the major compounds identified were cis-ocimene (28.5%), beta-ocimene (16.83%) and 3-methyl-2-(2-methyl-2-butenyl)-furan (11.94%). Hyalomma rufipes adults displayed a significant (P < 0.05) dose repellent response to the essential oil of T. minuta. Probit analysis indicated a repellent EC50 of T. minuta essential oil for male ticks to be 0.072 mL/mL (CI 0.053 mL/mL to 0.086 mL/mL) and 0.070 mL/mL (CI 0.052 mL/mL to 0.084 mL/mL) for female ticks. There were no significant differences in repellent responses between male and female ticks. The oil also significantly (P < 0.05) delayed moulting of 60% of H. rufipes engorged nymphs. These results suggest that T. minuta may be a potential source of anti-tick agents
URI: http://dx.doi.org/10.4102/ojvr.v79i1.358
http://hdl.handle.net/11189/2018
Appears in Collections:Appsc - Journal Articles (DHET subsidised)

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