Long-term fitness effects of the early-life environment in a wild bird population.

ABSTRACT: Environmental conditions and experiences during development can have long-term fitness consequences, including a reduction of adulthood survival and reproduction. These long-term fitness consequences may play an important role in shaping the evolution of life history. We tested two hypotheses on the long-term fitness effects of the developmental environment-the silver spoon hypothesis and the internal predictive adaptive response (PAR) hypothesis. We compared the change in annual survival and annual reproductive output with age for adult birds hatched and/or reared in poor--impacted by anthropogenic noise, and/or high sibling competition--and good--not impacted by anthropogenic noise, and/or low sibling competition--environments. We used a 23-year longitudinal dataset from a wild house spa

SUBMITTER: Sun Y 

PROVIDER: S-EPMC12477671 | biostudies-literature | 2025 Sep-Oct

REPOSITORIES: biostudies-literature