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Malaria Journal
Published in: Malaria Journal 1/2010

Open Access 01-12-2010 | Research

Evaluation of selected South African ethnomedicinal plants as mosquito repellents against the Anopheles arabiensis mosquito in a rodent model

Authors: Rajendra Maharaj, Vinesh Maharaj, Marion Newmarch, Neil R Crouch, Niresh Bhagwandin, Peter I Folb, Pamisha Pillay, Reshma Gayaram

Published in: Malaria Journal | Issue 1/2010

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Abstract

Background

This study was initiated to establish whether any South African ethnomedicinal plants (indigenous or exotic), that have been reported to be used traditionally to repel or kill mosquitoes, exhibit effective mosquito repellent properties.

Methods

Extracts of a selection of South African taxa were tested for repellency properties in an applicable mosquito feeding-probing assay using unfed female Anopheles arabiensis.

Results

Although a water extract of the roots of Chenopodium opulifolium was found to be 97% as effective as DEET after 2 mins, time lag studies revealed a substantial reduction in efficacy (to 30%) within two hours.

Conclusions

None of the plant extracts investigated exhibited residual repellencies >60% after three hours.
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Metadata
Title
Evaluation of selected South African ethnomedicinal plants as mosquito repellents against the Anopheles arabiensis mosquito in a rodent model
Authors
Rajendra Maharaj
Vinesh Maharaj
Marion Newmarch
Neil R Crouch
Niresh Bhagwandin
Peter I Folb
Pamisha Pillay
Reshma Gayaram
Publication date
01-12-2010
Publisher
BioMed Central
Published in
Malaria Journal / Issue 1/2010
Electronic ISSN: 1475-2875
DOI
https://doi.org/10.1186/1475-2875-9-301

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