Medical Entomology and Zoology (1997) 48, 25-31

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Toshiaki Ikeshoji and Barnard Bakotee (1997)
Dynamics of permethrin on mosquito nets used in the malaria control program in Honiara, Solomon Islands
Medical Entomology and Zoology 48 (1), 25-31
Abstract: A total of 11,373 permethrin-treated common and Olyset® (Sumika Life-Tech Co., Osaka) nets was distributed to 64 villages from October 1993 to February 1996 for the Pilot Malaria Control Program in Honiara. To monitor the efficacy of the nets, the chemical and biological assays were made. The gas chromatographic analysis of 206 nets showed an average surface dose of 258.1 mg per m2 of net, and 46.6 and 37% to retain the entomologically and epidemiologically effective doses of 60 and 100 mg/m2, respectively. Olyset nets lost 76% of the surface dose of permethrin by one washing with soap, but regained 82% by exposing to strong sunlight. The bioassay suggested that under the natural context Anopheles farauti escaped from the entomologically effective net before taking up a lethal dose due to the repellency and irritancy. From the results, it is recommended washing nets without soap, timely retreating common nets with permethrin, and reactivating Olyset nets by exposing to strong sunlight.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)

Research topic(s) for pests/diseases/weeds:
control - general

Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.

Anopheles farauti Solomon Islands