ArticleOecologia2021
Age-specific reproduction in female pied flycatchers: evidence for asynchronous aging.
Article in Oecologia, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
9 citing papers in PubMed.
- Asynchrony of ageing among traits in a wild bird population.Evolution letters · 2026Article
- Reproductive aging and age-dependent parental effects on offspring in a long-lived seabird.Oecologia · 2026Article
- Wild Bird Reproduction: Neuroendocrinology, Conservation Biology, and Environmental Threats.Advances in experimental medicine and biology · 2026Review
- Identifying the demographic pathways linking environmental covariates to population dynamics in an avian migrant.Ecological applications : a publication of the Ecological Society of America · 2026Article
- The role of vacant lots in promoting avian species diversity and occupancy in a post-industrial city.Landscape and urban planning · 2026Article
- Estimating latent individual demographic heterogeneity using structural equation models.Ecology · 2025Article
- Age- and trait-dependent breeding responses to environmental variation in a short-lived songbird.Scientific reports · 2023Article
- Spatial consistency in drivers of population dynamics of a declining migratory bird.The Journal of animal ecology · 2023Article
- Distinguishing within- from between-individual effects: How to use the within-individual centring method for quadratic patterns.The Journal of animal ecology · 2022Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Age-related variation in reproductive performance is central for the understanding of population dynamics and evolutionary processes. Our understanding of age trajectories in vital rates has long been limited by the lack of distinction between patterns occurring within- and among-individuals, and by the lack of comparative studies of age trajectories among traits. Thus, it is poorly understood how sets of demographic traits change within individuals according to their age. Based on 40 years of monitoring, we investigated age-related variation in five reproductive traits in female pied flycatchers (Ficedula hypoleuca) including laying date, clutch size, brood size, nest success (probability that a nest produces at least one chick) and egg success of successful nests (proportion of eggs resulting in a chick). We disentangled within- from among-individual processes and assessed the relative contribution of within-individual age-specific changes and selective appearance and disappearance. Finally, we compared the aging pattern among these five reproductive traits. We found strong evidence for age-specific performance including both early-life improvement and late-life decline in all reproductive traits but the egg success. Furthermore, the aging patterns varied substantially among reproductive traits both for the age of peak performance and for the rates of early-life improvement and late-life decline. The results show that age trajectories observed at the population level (cross-sectional analysis) may substantially differ from those occurring at the individual level and illustrate the complexity of variation in aging patterns across traits.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.