Tildesley A, Boyd S, Matthew C, Barnett S, Bassett DI, Cowan M & Roy W (2012) Evaluation Of Sensitivity To Chemotherapeutants In Successive Generations Of Lepeoptheirus Salmonis From A Resistant Population. Scottish Aquaculture Research Forum Report 069 (Editor) Scottish Aquaculture Research Forum. Scottish Aquaculture Research Forum Reports, 069. Scottish Aquaculture Research Forum. http://www.sarf.org.uk/cms-assets/documents/72452-592533.sarf069.pdf
There are currently reports of reduced sensitivity to certain lice treatments in different parts of Scotland and world-wide, and research is on-going into the extent and mechanisms of resistance to different treatments (Denholm et al., 2002; Sevatdal & Horsberg, 2003; Sevatdal et al., 2005). In particular, increasing evidence of resistance of Lepeophtheirus salmonis to the chemotherapeutant emamectin benzoate (Lees et al., 2008; Espedal et al., 2010) poses a serious problem to commercial farms because there are few licensed and effective treatments available.