Chinese Journal of Entomology (1999) 19, 153-160

Sin-Chung Liao (1999)
[Mortality and repellency effects of essential oils from citrus against the housefly and German cockroach]
Chinese Journal of Entomology 19 (2), 153-160
Abstract: There are an abundance of essential oils in citrus, of which d-limonene, alpha-pinene, and myrcene are the principal components. Our studies showed that the effects of quick knockdown, mortality, and repellency of citrus essential oils against the housefly and German cockroach were significant.. A dose of 0.5 g of citrus essential oils showed the effect of quick knockdown (KT₅₀) on houseflies in 10-20 s. The same dose of oils killed all treated flies within 24 h. The KT₅₀ of 1 g oils against German cockroaches was within 3 to 4 min, and 80-90% of treated cockroaches died within 24 h. In addition, citrus essential oil impeded metamorphosis in housefly pupae. The inhibited emergence rate of housefly pupae increased with the increased dipping time. The retention time repellency of essential oils against the German cockroach was about 1 to 2 d.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: Chinese)

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.
	Musca domestica		Taiwan
	Blattella germanica		Taiwan