Publication: Efficacy of repellent products against caged and free flying Anopheles stephensi mosquitoes
Issued Date
2005-11-01
Resource Type
ISSN
01251562
Other identifier(s)
2-s2.0-33645030113
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Mahidol University
Rights Holder(s)
SCOPUS
Bibliographic Citation
Southeast Asian Journal of Tropical Medicine and Public Health. Vol.36, No.6 (2005), 1423-1431
Suggested Citation
Yuwadee Trongtokit, Christopher F. Curtis, Yupha Rongsriyam Efficacy of repellent products against caged and free flying Anopheles stephensi mosquitoes. Southeast Asian Journal of Tropical Medicine and Public Health. Vol.36, No.6 (2005), 1423-1431. Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/16744
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Title
Efficacy of repellent products against caged and free flying Anopheles stephensi mosquitoes
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Abstract
The efficacy of 9 repellents (8 commercial repellents and one product under development) was evaluated on the skin at dosages of 0.65 and 1.7 mg of product/cm2, the latter dosage being the industrial standard for deet based repellents. The repellents were applied to the arm or lower leg of a human subject and tested against Anopheles Stephens: in a cage or flying freely in a mosquito-proof room. In the cage tests, a product with 20% p-menthane-3, 8-diol (PMD) active ingredient provided complete repellency for 7-8 hours, while with 10% PMD had complete repellency for only 30 minutes. The natural oils of clove (Syzygium aromaticum) (10% active ingredient) plus makaen (Zanthoxylum limonella) (10% active ingredient) gave protection for 4-5 hours. In the case of free flying mosquitoes, products with 20% and 30% PMD gave complete protection for 11-12 hours at a dosage of 1.7 mg/cm2 or 6 hours at half the dosage, while the product with 10% PMD afforded protection for less than 2 hours. At the higher dosage rate 40% citronella and hydroxyethyl isobutyl piperidine carboxylate, a new synthetic compound, provided complete repellency for 7 hours. Fifty percent deet (N,N-diethyl-3-methylbenzamide) was effective for 30 hours if left undisturbed on the skin.