“…Genetically distinct ecotypes of fish are often documented between migratory and resident life histories (Lin, Quinn, Hilborn, & Hauser, ; Pearse et al., ; Taylor, ), but only sparsely so in brown trout, possibly in part as a result of sample bias (Hindar, Jonsson, Ryman, & Stahl, ; Krueger & May, ; Skaala & Naevdal, ). As in the present investigation, an ecotype signal may be less pronounced than genetic differentiation among geographically defined populations, and studies may give ambiguous results, often related to the different populations studied (Bernatchez et al., ; Docker & Heath, ; Heath, Bettles, Jamieson, Stasiak, & Docker, ; Marin et al., ; Olsen, Wuttig, Fleming, Kretschmer, & Wenburg, ; Wilson et al., ). Sympatric populations with different life history strategies are typically more similar to each other, than to geographically separated populations (Aykanat et al., ; Bernatchez et al., ; Docker & Heath, ; Hindar et al., ; Narum, Contor, Talbot, & Powell, ; Perreault‐Payette et al., ).…”