Data from: Adaptive maternal investment in the wild? Links between maternal growth trajectory and offspring size, growth, and survival in contrasting environments ...
Life history theory predicts that investment per offspring should correlate negatively with the quality of environment offspring are anticipated to encounter; parents may use their own experience as juveniles to predict this environment and may modulate offspring traits such as growth capacity as we...
| Main Authors: | , , , , , |
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| Format: | Dataset |
| Language: | English |
| Published: |
Dryad
2019
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| Subjects: | |
| Online Access: | https://dx.doi.org/10.5061/dryad.pr9543d https://datadryad.org/stash/dataset/doi:10.5061/dryad.pr9543d |
| Summary: | Life history theory predicts that investment per offspring should correlate negatively with the quality of environment offspring are anticipated to encounter; parents may use their own experience as juveniles to predict this environment and may modulate offspring traits such as growth capacity as well as initial size. We manipulated nutrient levels in the juvenile habitat of wild Atlantic salmon Salmo salar to investigate the hypothesis that the egg size maximizing juvenile growth and survival depends on environmental quality. We also tested whether offspring traits were related to parental growth trajectory. Mothers that grew fast when young produced more, smaller offspring than mothers that had grown slowly to reach the same size. Despite their size disadvantage, offspring of faster-growing mothers grew faster than those of slow-growing mothers in all environments, counter to the expectation that they would be competitively disadvantaged. However, they had lower relative survival in environments where the ... : Burton2019_AmNat_EggDataData for analysis of variation in egg size and fecundity among mothers with different early life growth trajectories.Burton2019_AmNat_GrowthDataData for analysis of variation in growth of juvenile salmon from mothers with different early life growth trajectories in nutrient enriched & control sections of natural streamsBurton2019_AmNat_SurvivalDataData for (a) selection gradient analyses of juvenile survival with respect to the interaction between egg size & stream nutrient enrichment and (b) for analysis of variation in survival of juvenile salmon from mothers with different early life growth trajectories in nutrient enriched & control sections of natural streams. ... |
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