Flystrike in sheep, mostly caused by Lucilia sericata (Diptera: Calliphoridae), has been consistently identified as one of the most important sheep diseases from both a financial and welfare perspective (Bennett and others 1999, Bennett 2003, Bennett and Ijpelaar 2005, Boyne and others 2006). Infestation levels vary greatly depending on a wide range of factors related to the composition of the parasite fauna, the host, animal husbandry and control practices, climate and geography.
