Evidence mapPaperPMID 39487334Full record

ArticleCommunications biology2024

Sick without signs. Subclinical infections reduce local movements, alter habitat selection, and cause demographic shifts.

Marius Grabow, Wiebke Ullmann, Conny Landgraf, Rahel Sollmann, Carolin Scholz, Ran Nathan, Sivan Toledo, Renke Lühken, Joerns Fickel, Florian Jeltsch and 4 more

Abstract read
In one paragraph

Article in Communications biology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed, 1 pooled it
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

10 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Chronic exposure to a common azole fungicide is associated with reactivation of chronicInternational journal for parasitology. Parasites and wildlife · 2026
    Article
  6. The lineage diversity, spatiotemporal distribution and pathological significance ofInternational journal for parasitology. Parasites and wildlife · 2025
    Article
  7. Article
  8. Article
  9. Article
  10. Article
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

14 authors.

Marius GrabowLeibniz Institute for Zoo and Wildlife Research, Alfred-Kowalke-Straße 17, Berlin, Germany. grabow@izw-berlin.de.ORCID 0000-0003-0702-9642
Wiebke UllmannPlant Ecology and Nature Conservation, Universität Potsdam, Zeppelinstraße 48A, Potsdam, Germany.
Conny LandgrafLeibniz Institute for Zoo and Wildlife Research, Alfred-Kowalke-Straße 17, Berlin, Germany.
Rahel SollmannLeibniz Institute for Zoo and Wildlife Research, Alfred-Kowalke-Straße 17, Berlin, Germany.
Carolin ScholzLeibniz Institute for Zoo and Wildlife Research, Alfred-Kowalke-Straße 17, Berlin, Germany.
Ran NathanMovement Ecology Laboratory, Department of Ecology, Evolution & Behavior, The Hebrew University of Jerusalem, Jerusalem, Israel.ORCID 0000-0002-5733-6715
Sivan ToledoBlavatnik School of Computer Sciences, Tel Aviv University, Tel Aviv, Israel.ORCID 0000-0002-9524-7115
Renke LühkenBernhard Nocht Institute for Tropical Medicine, Bernhard-Nocht-Straße 74, Hamburg, Germany.ORCID 0000-0002-1984-839X
Joerns FickelLeibniz Institute for Zoo and Wildlife Research, Alfred-Kowalke-Straße 17, Berlin, Germany.ORCID 0000-0002-0593-5820
Florian JeltschPlant Ecology and Nature Conservation, Universität Potsdam, Zeppelinstraße 48A, Potsdam, Germany.ORCID 0000-0002-4670-6469
Niels BlaumPlant Ecology and Nature Conservation, Universität Potsdam, Zeppelinstraße 48A, Potsdam, Germany.ORCID 0000-0001-6807-5162
Viktoriia RadchukLeibniz Institute for Zoo and Wildlife Research, Alfred-Kowalke-Straße 17, Berlin, Germany.ORCID 0000-0003-3072-0095
Ralph TiedemannEvolutionary Biology/Systematic Zoology, Institute of Biochemistry and Biology, University of Potsdam, Karl-Liebknecht-Straße 24-25, Potsdam, Germany.ORCID 0000-0002-2604-6336
Stephanie Kramer-SchadtLeibniz Institute for Zoo and Wildlife Research, Alfred-Kowalke-Straße 17, Berlin, Germany.ORCID 0000-0002-9269-4446

Funding

Bundesministerium für Bildung und Forschung (Federal Ministry of Education and Research) 01Kl2022Deutsche Forschungsgemeinschaft (German Research Foundation) DFG-GRK 2118/1Deutsche Forschungsgemeinschaft (German Research Foundation) DFG-GRK 2118/2
6 · The paper itself

Abstract

In wildlife populations, parasites often go unnoticed, as infected animals appear asymptomatic. However, these infections can subtly alter behaviour. Field evidence of how these subclinical infections induce changes in movement behaviour is scarce in free-ranging animals, yet it may be crucial for zoonotic disease surveillance. We used an ultra-high-resolution tracking system (ATLAS) to monitor the movements of 60 free-ranging swallows every 8 seconds across four breeding seasons, resulting in over 1 million localizations. About 40% of these swallows were naturally infected with haemosporidian parasites. Here, we show that infected individuals had reduced foraging ranges, foraged in lower quality habitats, and faced a lowered survival probability, with an average reduction of 7.4%, albeit with some variation between species and years. This study highlights the impact of subclinical infections on movement behaviour and survival, emphasizing the importance of considering infection status in movement ecology. Our findings provide insights into individual variations in behaviour and previously unobservable local parasite transmission dynamics.

Indexed as

EcosystemAnimalsAnimals, WildAsymptomatic InfectionsHaemosporidaMovementPopulation DynamicsSwallows

Identifiers

PMID39487334
PMCPMC11530534

What Socratic holds

Textmetadata
LicenceCC BY
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 Socratic graph.