Artificial selection on reproductive timing in hatchery salmon drives a phenological shift and potential maladaptation to climate change.

ABSTRACT: The timing of breeding migration and reproduction links generations and substantially influences individual fitness. In salmonid fishes, such phenological events (seasonal return to freshwater and spawning) vary among populations but are consistent among years, indicating local adaptation in these traits to prevailing environmental conditions. Changing reproductive phenology has been observed in many populations of Atlantic and Pacific salmon and is sometimes attributed to adaptive responses to climate change. The sockeye salmon spawning in the Cedar River near Seattle, Washington, USA, have displayed dramatic changes in spawning timing over the past 50 years, trending later through the early 1990s, and becoming earlier since then. We explored the patterns and drivers of these changes usin

SUBMITTER: Tillotson MD 

PROVIDER: S-EPMC6691210 | biostudies-literature | 2019 Aug

REPOSITORIES: biostudies-literature