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- W2180212872 endingPage "4794" @default.
- W2180212872 startingPage "4778" @default.
- W2180212872 abstract "Survival through periods of resource scarcity depends on the balance between metabolic demands and energy storage. The opposing effects of predation and starvation mortality are predicted to result in trade-offs between traits that optimize fitness during periods of resource plenty (e.g., during the growing season) and those that optimize fitness during periods of resource scarcity (e.g., during the winter). We conducted a common environment experiment with two genetically distinct strains of rainbow trout to investigate trade-offs due to (1) the balance of growth and predation risk related to foraging rate during the growing season and (2) the allocation of energy to body size prior to the winter. Fry (age 0) from both strains were stocked into replicate natural lakes at low and high elevation that differed in winter duration (i.e., ice cover) by 59 days. Overwinter survival was lowest in the high-elevation lakes for both strains. Activity rate and growth rate were highest at high elevation, but growing season survival did not differ between strains or between environments. Hence, we did not observe a trade-off between growth and predation risk related to foraging rate. Growth rate also differed significantly between the strains across both environments, which suggests that growth rate is involved in local adaptation. There was not, however, a difference between strains or between environments in energy storage. Hence, we did not observe a trade-off between growth and storage. Our findings suggest that intrinsic metabolic rate, which affects a trade-off between growth rate and overwinter survival, may influence local adaptation in organisms that experience particularly harsh winter conditions (e.g., extended periods trapped beneath the ice in high-elevation lakes) in some parts of their range." @default.
- W2180212872 created "2016-06-24" @default.
- W2180212872 creator A5013434470 @default.
- W2180212872 creator A5027618712 @default.
- W2180212872 creator A5045680634 @default.
- W2180212872 creator A5060613378 @default.
- W2180212872 creator A5076712876 @default.
- W2180212872 date "2015-10-08" @default.
- W2180212872 modified "2023-09-27" @default.
- W2180212872 title "Rainbow trout in seasonal environments: phenotypic trade‐offs across a gradient in winter duration" @default.
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