Effects of life history variation on size and growth in stream‐dwelling Atlantic salmon

摘要: A large size variation amongst life histories for stream-dwelling Atlantic salmon Salmo salar was found and the relative effect of on varied over time. As early as December (age 0+ years), fish that later smolted at age 2+years were significantly larger than did not smolt 2+ years. In contrast, there no mass differences 0- years between would mature or 1+ (October). The smolts non-smolts persisted until smolting, immature first appeared in May 1 + years). Following September also a significant interaction smolting maturity. Previously year different size, but much lighter non-smolts. Based differences, apparent 'decision' to occurred c. 5 months before (winter. years) decision ( late spring, addition strong seasonal growth variation, sizes freshwater largely structured by complex smolt-age