Evidence map›Paper›PMID 30679484›Full record

ArticleScientific reports2019

Exposure to Pb impairs breeding success and is associated with longer lifespan in urban European blackbirds.

Clémentine Fritsch, Łukasz Jankowiak, Dariusz Wysocki

Abstract read
In one paragraph

Article in Scientific reports, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
–field-weighted citation impact
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

9 citing papers in PubMed.

  1. Review
  2. Article
  3. Article
  4. Article
  5. Increased lead and glucocorticoid concentrations reduce reproductive success in house sparrows along an urban gradient.Ecological applications : a publication of the Ecological Society of America · 2022
    Article
  6. Article
  7. Article
  8. Article
  9. Hormesis in Health and Chronic Diseases.Trends in endocrinology and metabolism: TEM · 2019
    Review
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

3 authors.

Clémentine FritschChrono-environnement, UMR 6249 CNRS / University Bourgogne Franche-Comté Usc INRA, 16 route de Gray, F-25030, Besançon Cedex, France. clementine.fritsch@univ-fcomte.fr.ORCID 0000-0003-2062-5799
Łukasz JankowiakDepartment of Vertebrate Zoology and Anthropology, University of Szczecin, Wąska 13, 71-412, Szczecin, Poland.
Dariusz WysockiDepartment of Vertebrate Zoology and Anthropology, University of Szczecin, Wąska 13, 71-412, Szczecin, Poland.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Although several factors have been highlighted to explain the influence of urbanization on bird fitness and survival, the role of persistent toxicants such as lead (Pb), which is typically present in urban areas worldwide, has seldom been studied despite the ecological importance of such a widespread stressor. Studying free-living European blackbirds (Turdus merula) in city parks, we tested the hypothesis that low-dose chronic exposure to Pb could shape the life-history traits of urban birds. The feather concentrations of Pb and cadmium were typical of urban areas and low-to-moderate contamination of sites. Although the lifetime breeding success of females decreased with increasing exposure to Pb, the lifespan and survival probabilities of blackbirds increased with Pb contamination regardless of gender. Breeding effort-dependent patterns in the relationship between lifespan and Pb levels were highlighted. No significant relationships were detected between cadmium and life-history traits. The results suggest a possible trade-off between self-maintenance and reproduction, with the most affected birds redirecting allocations towards their own survival, which is consistent with the "stress hormone hypothesis". These findings suggest that Pb pollution in urban environments may shape avian ecological features and be one of the drivers of wildlife responses to urbanization and that some urban areas may function as ecological traps driven by pollutants.

Indexed as

Environmental ExposureModels, BiologicalSongbirdsAnimalsCitiesFemaleLeadLongevityReproductionLead

Identifiers

PMID30679484
PMCPMC6345771

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Registered trials

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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.