Medical and Veterinary Entomology (2004) 18, 449-452

A. Blackwell, K.A. Evans, R.H.C. Strang and M. Cole (2004)
Toward development of neem-based repellents against the Scottish Highland biting midge Culicoides impunctatus
Medical and Veterinary Entomology 18 (4), 449-452
Abstract: Oil of neem, from the tree Azadirachta indica A. Juss (Meliaceae), was evaluated for repellent and antifeedant activity against Culicoides biting midges (Diptera: Ceratopogonidae), by three complementary methods with serial dilutions. Electroantennograms revealed the sensitivity of Culicoides nubeculosus (Meigen) females to neem > 0.10%. Culicoides impunctatus Goetghebuer females were repelled by > 1% in a Y-tube olfactometer, Using a membrane feeder for wild-caught parous females of C. impunctatus, the proportion blood-feeding was significantly reduced by topical applications of neem oil > 0.10% concentrations, with blood-feeding completely prevented by > 1%. On the basis of these response data, we developed 2% neem-based formulations for personal protection against biting midges.
(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): Alison Blackwell

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.
	Culicoides impunctatus		United Kingdom
	Culicoides nubeculosus		United Kingdom