Evidence map›Paper›PMID 19403537›Full record

ArticleProceedings. Biological sciences2009

Great tits growing old: selective disappearance and the partitioning of senescence to stages within the breeding cycle.

S Bouwhuis, B C Sheldon, S Verhulst, A Charmantier

Open access · greenAbstract read
In one paragraph

Article in Proceedings. Biological sciences, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 63 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
63citing papers in PubMed, 1 pooled it
23.6field-weighted citation impact, top 1% of its field
1 · What the graph read from it

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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

63 citing papers in PubMed, 1 synthesis or guideline pooled it, 225 citations in OpenAlex.

  1. Pooled it
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  6. Diagnosing confounded Bateman gradients.Evolution; international journal of organic evolution · 2025
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  9. Exposing the role of individual heterogeneity in bighorn sheep population dynamics.Proceedings of the National Academy of Sciences of the United States of America · 2025
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  12. The ecology of ageing in wild societies: linking age structure and social behaviour.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2024
    Review
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  15. Article
  16. Article
  17. Article
  18. Effects of developmental and adult environments on ageing.Evolution; international journal of organic evolution · 2022
    Article
  19. Article
  20. Article

3 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors at 3 institutions in 3 countries.

S BouwhuisBehavioural Biology Group, University of Groningen, Kerklaan 30, 9751 NN Haren, The Netherlands. a.h.j.bouwhuis@rug.nl
B C Sheldon
S Verhulst
A Charmantier
University of Groningen · NLCentre d'Écologie Fonctionnelle et Évolutive · FRUniversity of Oxford · GB

Funding

Biotechnology and Biological Sciences Research Council
6 · The paper itself

Abstract

Deterioration of reproductive traits with age is observed in an increasing number of species. Although such deterioration is often attributed to reproductive senescence, a within-individual decline in reproductive success with age, few studies on wild animals have focused on direct fitness measures while accounting for selective disappearance and terminal effects, and to our knowledge none have determined how senescence effects arise from underlying reproductive traits. We show for female great tits that such an approach helps understanding of the onset, impact and architecture of senescence. Cross-sectional analysis of 49 years of breeding data shows annual recruit production to decline from 3.5 years of age, this decline affecting 9 per cent of females each year. Longitudinal analyses, however, show that selective disappearance of poor-quality breeders partly masks senescence, which in fact starts at 2.8 years and affects 21 per cent of females each year. There is no evidence for abrupt terminal effects. Analyses of underlying traits show no deterioration in clutch size, but significant declines in brood size and fledgling number. Furthermore, these traits contribute -9, 12 and 39 per cent to the senescent decline in recruit production, respectively. Besides providing detailed knowledge of the patterns and architecture of senescence in a natural population, these results illustrate the importance of modelling individual variation, and facilitate study of the underlying mechanisms of senescence.

Indexed as

AgingAnimalsFemaleLongevityPasseriformesReproduction

Identifiers

PMID19403537
PMCPMC2839957
OpenAlexW2162875184

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.