Sea lamprey wounding in Canadian waters of Lake Huron from 2000 to 2009: Temporal changes differ among regions

► Sea lamprey wounding rates of lake trout and lake whitefish vary in time and space. ► We study trends in wounding rates from 2000-2009 in five regions of Lake Huron. ► In both species, wounding rates increased over the time period in three regions. ► The highest increases occurred in northern and southern Georgian Bay. ► Increases were unexpected given the intensity of lampricide treatment in this system.