George D R, Smith T J, Sparagano O A E, Guy J H
School of Agriculture, Food and Rural Development, Newcastle University, Newcastle upon Tyne NE1 7RU, UK.
Vet Parasitol. 2008 Aug 17;155(3-4):333-5. doi: 10.1016/j.vetpar.2008.05.005. Epub 2008 May 10.
The poultry red mite, Dermanyssus gallinae (De Geer) is a serious ectoparasitic pest of layer hens that can survive for long periods in the poultry house sub-structure without taking a blood meal from its host. The research undertaken in this study found that 'time since last blood meal' had a notable effect on how toxic a selection of plant essential oils were to D. gallinae under laboratory conditions. In general, the essential oils had a greater toxic effect on D. gallinae if mites had been starved of a blood meal for around 3 weeks, than if they had been more recently fed 3-13 days prior to tests. This result was consistent across the four essential oils used (thyme, palmarosa, caraway and juniper leaf). This suggests that plant essential oils may be of use in management schemes for D. gallinae, particularly if used to sanitise houses between flocks, when mites will have been starved.
鸡皮刺螨（Dermanyssus gallinae (De Geer)）是蛋鸡的一种严重外寄生害虫，它可以在禽舍的下层结构中长时间存活而不吸食宿主的血液。本研究进行的调查发现，在实验室条件下，“距上次吸血的时间”对所选植物精油对鸡皮刺螨的毒性有显著影响。一般来说，如果螨虫已经大约3周没有吸血，那么与在测试前3 - 13天内刚吸食过血液的螨虫相比，精油对鸡皮刺螨的毒性作用更大。在所使用的四种精油（百里香、玫瑰天竺葵、香菜和杜松叶）中，这一结果都是一致的。这表明植物精油可能在鸡皮刺螨的管理方案中有用，特别是在鸡群之间用于禽舍消毒时，此时螨虫会处于饥饿状态。
