Evidence map›Paper›PMID 35264257›Full record

ArticleParasitology2022

Longitudinal dynamics of co-infecting gastrointestinal parasites in a wild sheep population.

Amy R Sweeny, Yolanda Corripio-Miyar, Xavier Bal, Adam D Hayward, Jill G Pilkington, Tom N McNeilly, Daniel H Nussey, Fiona Kenyon

Erratum issuedOpen access · hybridAbstract read
In one paragraph

Article in Parasitology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
2.5field-weighted citation impact, top 12% 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

13 citing papers in PubMed, 11 citations in OpenAlex.

  1. Article
  2. Short- and long-term costs of reproduction revealed by telomere dynamics in wild greater horseshoe bats.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  3. Silent predators: Revealing the parasites of Himalayan musk deer (International journal for parasitology. Parasites and wildlife · 2025
    Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Patterns of gastrointestinal parasite infections in bighorn sheep,International journal for parasitology. Parasites and wildlife · 2024
    Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors at 2 institutions in 1 country.

Amy R SweenyInstitute of Evolutionary Biology, University of Edinburgh, Edinburgh, UK.ORCID https://orcid.org/0000-0003-4230-171X
Yolanda Corripio-MiyarMoredun Research Institute, Penicuik, UK.ORCID https://orcid.org/0000-0002-1344-7405
Xavier BalInstitute of Evolutionary Biology, University of Edinburgh, Edinburgh, UK.ORCID https://orcid.org/0000-0002-2206-2099
Adam D HaywardMoredun Research Institute, Penicuik, UK.ORCID https://orcid.org/0000-0001-6953-7509
Jill G PilkingtonInstitute of Evolutionary Biology, University of Edinburgh, Edinburgh, UK.
Tom N McNeillyMoredun Research Institute, Penicuik, UK.ORCID https://orcid.org/0000-0001-6469-0512
Daniel H NusseyInstitute of Evolutionary Biology, University of Edinburgh, Edinburgh, UK.ORCID https://orcid.org/0000-0002-9985-0317
Fiona KenyonMoredun Research Institute, Penicuik, UK.ORCID https://orcid.org/0000-0002-8073-0382
Moredun Research Institute · GBUniversity of Edinburgh · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Within-year variation in infection is a ubiquitous feature of natural populations, but is determined by a complex interplay of environmental, parasitological and host factors. At the same time, co-infection is the norm in the wild. Longitudinal dynamics of co-infecting parasites may therefore be further complicated by covariation across multiple parasites. Here, we used fecal parasite egg and oocyst counts collected repeatedly from individually marked wild Soay sheep to investigate seasonal dynamics of six gastrointestinal parasite groups. Prevalence and abundance tended to be higher in spring and summer, and abundance was higher in lambs compared to adults. We found that within-year variation in highly prevalent strongyle nematode counts was dependent on adult reproductive status, where reproductive ewes had distinct dynamics compared to males and barren ewes. For similarly prevalent coccidia we found an overall peak in oocyst counts in spring but no differences among males, barren and pregnant ewes. Using multivariate mixed-effects models, we further show that apparent positive correlation between strongyle and coccidia counts was driven by short-term within-individual changes in both counts rather than long-term among-individual covariation. Overall, these results demonstrate that seasonality varies across demographic and parasite groups and highlight the value of investigating co-infection dynamics over time.

Indexed as

CoccidiaEimeriahost–parasite interactionslife-history trade-offslongitudinal samplingnematodesreproductionsex differencesstrongyles

Identifiers

PMID35264257
PMCPMC10090596
OpenAlexW4210619134

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.