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

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 t...

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Autores principales: Maharaj, Rajendra, Maharaj, Vinesh, Newmarch, Marion, Crouch, Neil R, Bhagwandin, Niresh, Folb, Peter I, Pillay, Pamisha, Gayaram, Reshma
Formato: Texto
Lenguaje:English
Publicado: BioMed Central 2010
Materias:
Research
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2988038/
https://www.ncbi.nlm.nih.gov/pubmed/21029442
http://dx.doi.org/10.1186/1475-2875-9-301
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author Maharaj, Rajendra
Maharaj, Vinesh
Newmarch, Marion
Crouch, Neil R
Bhagwandin, Niresh
Folb, Peter I
Pillay, Pamisha
Gayaram, Reshma
author_facet Maharaj, Rajendra
Maharaj, Vinesh
Newmarch, Marion
Crouch, Neil R
Bhagwandin, Niresh
Folb, Peter I
Pillay, Pamisha
Gayaram, Reshma
author_sort Maharaj, Rajendra
collection PubMed
description 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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spelling pubmed-29880382010-11-19 Evaluation of selected South African ethnomedicinal plants as mosquito repellents against the Anopheles arabiensis mosquito in a rodent model Maharaj, Rajendra Maharaj, Vinesh Newmarch, Marion Crouch, Neil R Bhagwandin, Niresh Folb, Peter I Pillay, Pamisha Gayaram, Reshma Malar J Research 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. BioMed Central 2010-10-28 /pmc/articles/PMC2988038/ /pubmed/21029442 http://dx.doi.org/10.1186/1475-2875-9-301 Text en Copyright ©2010 Maharaj et al; licensee BioMed Central Ltd. http://creativecommons.org/licenses/by/2.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research
Maharaj, Rajendra
Maharaj, Vinesh
Newmarch, Marion
Crouch, Neil R
Bhagwandin, Niresh
Folb, Peter I
Pillay, Pamisha
Gayaram, Reshma
Evaluation of selected South African ethnomedicinal plants as mosquito repellents against the Anopheles arabiensis mosquito in a rodent model
title Evaluation of selected South African ethnomedicinal plants as mosquito repellents against the Anopheles arabiensis mosquito in a rodent model
title_full Evaluation of selected South African ethnomedicinal plants as mosquito repellents against the Anopheles arabiensis mosquito in a rodent model
title_fullStr Evaluation of selected South African ethnomedicinal plants as mosquito repellents against the Anopheles arabiensis mosquito in a rodent model
title_full_unstemmed Evaluation of selected South African ethnomedicinal plants as mosquito repellents against the Anopheles arabiensis mosquito in a rodent model
title_short Evaluation of selected South African ethnomedicinal plants as mosquito repellents against the Anopheles arabiensis mosquito in a rodent model
title_sort evaluation of selected south african ethnomedicinal plants as mosquito repellents against the anopheles arabiensis mosquito in a rodent model
topic Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2988038/
https://www.ncbi.nlm.nih.gov/pubmed/21029442
http://dx.doi.org/10.1186/1475-2875-9-301
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