title: Lack of prolonged activity of lavender essential oils as acaricides against the poultry red mite (Dermanyssusgallinae) under laboratory conditions.
abstract: Managing the poultry red mite, Dermanyssusgallinae (De Geer) by conventional means (i.e., synthetic acaricides) has become increasingly problematic. As a possible alternative, research has identified several plant essential oils that are toxic to D. gallinae. However, essential oils are highly volatile and any acaricidal effect they exert could be short-lived in practice. This study investigated the short-lived toxicity of six lavender essential oils to D. gallinae. In sealed Petri-dishes, mites were exposed to filter papers impregnated with essential oil at a concentration of 0.14mg/cm(3). When filter papers were used immediately after impregnation, 66-90% D.gallinae mortality was observed after 24h, depending upon the essential oil used. If impregnated filter papers were left in a fume cupboard for 24h prior to use, mortality rates of D.gallinae fell to 11% or less.
authors: School of Agriculture, Food and Rural Development, Newcastle University, Newcastle Upon Tyne, NE1 7RU, UK. D.R.George@ncl.ac.uk
authors: D R
authors: DR
authors: George
authors: K
authors: K
authors: Callaghan
authors: J H
authors: JH
authors: Guy
authors: O A E
authors: OA
authors: Sparagano
mesh_terms: D000053:Acari; D000818:Animals; D002645:Chickens; D027523:Lavandula; D008924:Mite Infestations / Q000188:drug therapy / Q000401:mortality / Q000662:veterinary*; D008925:Mites / Q000187:drug effects*; D009822:Oils, Volatile / Q000627:therapeutic use* / Q000633:toxicity; D010938:Plant Oils / Q000627:therapeutic use* / Q000633:toxicity; D011201:Poultry Diseases / Q000188:drug therapy / Q000401:mortality / Q000469:parasitology*
chemical_list: D009822:Oils, Volatile; D010938:Plant Oils; C045718:lavender oil