Journal of Economic Entomology (2009) 102, 2061-2071

Piera Y. Siegert, Edward Walker and James R. Miller (2009)
Differential behavioral responses of Anopheles gambiae (Diptera: Culicidae) modulate mortality caused by pyrethroid-treated bednets
Journal of Economic Entomology 102 (6), 2061-2071
Abstract: Direct observations of individual Anopheles gambiae s.s. (Diptera: Culicidae) females fleetingly but repeatedly alighting on pyrethroid-treated fabric of long-lasting insecticide treated nets (LLINs) fitted over a human hand proved that onset of behavioral effects modulated mortality. For Olyset Net, containing 1,000 mg of permethrin per m², mosquitoes reduced landing attempts and elevated frequency of flight within 3 min. This kinetic disengagement resulted in little mortality. In contrast, mosquito landing attempts on PermaNet (containing 55 mg of deltamethrin per m²) were sustained for up to 6 min before disengagement, and mortality was a frequent outcome. The likely disengagement mechanism was loss of response to host cues, which was restored within 24 h. We conclude that optimal LLIN formulations should maximize engagement so as to maximize mortality.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): James R. Miller

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

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Pest and/or beneficial records:

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