Publication: Bioefficacy of a long-lasting insecticide impregnated net on blood feeding inhibition of Anopheles maculatus Theobald and Culex quinquefasciatus Say
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Date
2014
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Abstract
This study aimed to evaluate the bioefficacy and blood feeding inhi bition of mosquitoes under laboratory conditions using the WHO tunnel test method on unwashed and washed long-lasting insecticide impregnated net with extrinsic heat treatment of 30ºC followed by 80ºC on the same net during washing. PermaNet® exhibited fairy high durability to washing (5 washes) and had fairy long-lasting bioefficacy against Anopheles maculatus for blood feeding inhibition on both unwashed (39 months) and washed (26 months) nets. However, Perma Net exhibited lower bioefficacy against Culex quinquefasciatus. This study also suggested that the application of extrinsic heat treatment of 30ºC followed by an increased heat at 80ºC on the same net exerted significant differences (p0.05). An. maculatus exhibited significant differences in resting preference after a successful blood meal, as more blood-fed and live females preferred to rest and stay near the bait in the mouse cage, and more dead and unfed females were found in the outer cage of both the unwashed and washed nets (p<0.05).
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Keywords
Anopheles maculatus Theobald, Culex quinquefasciatus Say, Blood-feeding inhibition, Extrinsic-heat treatment, PermaNet®, Tunnel mortality