Stocking methods and parasite-induced reductions in capture: Modelling Argulus foliaceus in trout fisheries

► Models of the macroparasite Argulus foliaceus in trout fisheries are presented. ► The effects of different stocking methods on the parasite are examined. ► High stocking levels are found to lead to increased parasite burdens. ► The reduction in rod capture (caused by host morbidity and reduction in appetite) is examined. ► The practise of increasing stocking to maintain “rod averages” is shown to be counterproductive.