Evidence map›Paper›PMID 23146387›Full record

ArticleParasites & vectors2012

Factors affecting deer ked (Lipoptena cervi) prevalence and infestation intensity in moose (Alces alces) in Norway.

Knut Madslien, Bjørnar Ytrehus, Hildegunn Viljugrein, Erling J Solberg, Kent Rudi Bråten, Atle Mysterud

Open access · goldAbstract read
In one paragraph

Article in Parasites & vectors, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
1.0field-weighted citation impact, top 27% 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

12 citing papers in PubMed, 28 citations in OpenAlex.

  1. Distribution ofInternational journal for parasitology. Parasites and wildlife · 2026
    Article
  2. The role of deer keds (Diptera: Hippoboscidae: Lipoptena and Neolipoptena) in occupational and public health.Journal of occupational medicine and toxicology (London, England) · 2025
    Review
  3. Article
  4. Article
  5. Molecular characterization ofInternational journal for parasitology. Parasites and wildlife · 2021
    Article
  6. Article
  7. Temporal-Microclimatic Factors Affect the Phenology ofAnimals : an open access journal from MDPI · 2020
    Article
  8. Microbiome Analysis Reveals the Presence ofFrontiers in microbiology · 2018
    Article
  9. Article
  10. Article
  11. Article
  12. 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

6 authors at 3 institutions in 1 country.

Knut MadslienNorwegian Veterinary Institute, Oslo, Norway. knut.madslien@vetinst.no
Bjørnar Ytrehus
Hildegunn Viljugrein
Erling J Solberg
Kent Rudi Bråten
Atle Mysterud
Norwegian Veterinary Institute · NONorwegian Institute for Nature Research · NOUniversity of Oslo · NO

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe deer ked (Lipoptena cervi), a hematophagous ectoparasite of Cervids, is currently spreading in Scandinavia. In Norway, keds are now invading the south-eastern part of the country and the abundant and widely distributed moose (Alces alces) is the definitive host. However, key factors for ked abundance are poorly elucidated. The objectives of our study were to (i) determine deer ked infestation prevalence and intensity on moose and (ii) evaluate if habitat characteristics and moose population density are determinants of deer ked abundance on moose.

methodsIn order to identify key factors for deer ked abundance, a total of 350 skin samples from the neck of hunted moose were examined and deer keds counted. Infestation intensity was analyzed in relation to moose age and sex, moose population density and landscape characteristics surrounding the killing site.

resultsDeer ked infestation prevalence was 100%, but infestation intensity varied from 0.001 to 1.405 keds/cm². Ked intensity was highest in male yearlings (~1.5 years) and positively associated with longitude and Scots pine (Pinus sylvestris) dominated habitat and negatively associated with bogs and latitude. Moose population density during autumn showed a tendency to be positively associated, while altitude tended to be negatively associated with ked intensity.

conclusionsDeer keds exploit the whole moose population within our study area, but are most prevalent in areas dominated by Scots pine. This is probably a reflection of Scots pine being the preferred winter browse for moose in areas with highest moose densities in winter. Ked intensity decreases towards the northwest and partly with increasing altitude, probably explained by the direction of dispersal and reduced temperature, respectively. Abundant deer ked harm humans and domestic animals. Moose management authorities should therefore be aware of the close relationship between moose, deer ked and habitat, using the knowledge as a management tool for locally regulating the ked burden.

Indexed as

Age FactorsAnimalsDipteraEcosystemEctoparasitic InfestationsFemaleMaleNeckNorwayPrevalenceRuminantsSex FactorsSkin

Identifiers

PMID23146387
PMCPMC3514306
OpenAlexW2155882455

What OpenQuestion 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 OpenQuestion graph.