Evidence map›Paper›PMID 27646717›Full record

ArticleOecologia2016

Negative impact of urban habitat on immunity in the great tit Parus major.

Juliette Bailly, Renaud Scheifler, Marie Belvalette, Stéphane Garnier, Elena Boissier, Valérie-Anne Clément-Demange, Maud Gète, Matthieu Leblond, Baptiste Pasteur, Quentin Piget and 2 more

Abstract read
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In one paragraph

Article in Oecologia, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 1 pooled it
2.9field-weighted citation impact, top 11% 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

20 citing papers in PubMed, 1 synthesis or guideline pooled it, 47 citations in OpenAlex.

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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

12 authors at 2 institutions in 1 country.

Juliette BaillyBioGéoSciences, UMR 6282, Univ Bourgogne Franche-Comté, 6 Boulevard Gabriel, 21000, Dijon, France. baillyjuliette@free.fr.
Renaud ScheiflerChronoEnvironment, UMR 6249, Univ Bourgogne Franche-Comté, La Bouloie, 16 Route de Gray, 25030, Besançon, France.
Marie BelvaletteBioGéoSciences, UMR 6282, Univ Bourgogne Franche-Comté, 6 Boulevard Gabriel, 21000, Dijon, France.
Stéphane GarnierBioGéoSciences, UMR 6282, Univ Bourgogne Franche-Comté, 6 Boulevard Gabriel, 21000, Dijon, France.
Elena BoissierBioGéoSciences, UMR 6282, Univ Bourgogne Franche-Comté, 6 Boulevard Gabriel, 21000, Dijon, France.
Valérie-Anne Clément-DemangeBioGéoSciences, UMR 6282, Univ Bourgogne Franche-Comté, 6 Boulevard Gabriel, 21000, Dijon, France.
Maud GèteChronoEnvironment, UMR 6249, Univ Bourgogne Franche-Comté, La Bouloie, 16 Route de Gray, 25030, Besançon, France.
Matthieu LeblondBioGéoSciences, UMR 6282, Univ Bourgogne Franche-Comté, 6 Boulevard Gabriel, 21000, Dijon, France.
Baptiste PasteurBioGéoSciences, UMR 6282, Univ Bourgogne Franche-Comté, 6 Boulevard Gabriel, 21000, Dijon, France.
Quentin PigetBioGéoSciences, UMR 6282, Univ Bourgogne Franche-Comté, 6 Boulevard Gabriel, 21000, Dijon, France.
Mickaël SageWildlife, Environment and Expertises, 25 Rue de la Grette, 25000, Besançon, France.
Bruno FaivreBioGéoSciences, UMR 6282, Univ Bourgogne Franche-Comté, 6 Boulevard Gabriel, 21000, Dijon, France.
Biogéosciences · FRLaboratoire Chrono-Environnement · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Urban habitats are described as having an overall negative influence on many fitness-related traits in several bird species, but a vital function such as immunity remains poorly studied. The immune response is strongly linked to individual condition, which partly depends on resource availability and the parasitic context that often differ between urban and natural habitats. A difference between the immunity of populations dwelling in urban areas and populations from more natural habitats can, therefore, be hypothesized. We conducted a 2-year experimental study on great tits (Parus major) in urban and forest areas. We stimulated the constitutive immunity of nestlings and assessed both the inflammatory response by measuring the plasma levels of haptoglobin, an inflammatory marker, and its activation cost through the loss of body mass. In addition, we checked the nestlings for ectoparasites and assessed haemosporidian prevalence in adults. Nestlings from urban sites produced relatively less haptoglobin and lost more body mass than those from forest sites, which suggests that the activation of constitutive immunity is more costly for birds living in urban sites than for those living in the forest. We detected no ectoparasite in birds in both habitats. However, urban adults showed lower haemosporidian prevalence than forest ones, suggesting a reduced exposure to these parasites and their vectors in towns. Overall, our study provides evidence for an immune difference between urban and forest populations. Because immunity is crucial for organism fitness, it is of prime interest to identify causes and processes at the origin of this difference.

Indexed as

ImmunityAnimalsEcosystemEnvironmentParasitesPasseriformesBirdsEcological immunologyHaptoglobinInflammationUrbanization

Identifiers

PMID27646717
OpenAlexW2521780307

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.