Cristin-resultat-ID: 981121
Sist endret: 28. februar 2013, 17:03
NVI-rapporteringsår: 2012
Resultat
Vitenskapelig artikkel
2012

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

Bidragsytere:
  • Knut Madslien
  • Bjørnar Ytrehus
  • Hildegunn Viljugrein
  • Erling Johan Solberg
  • Kent Rudi Bråten og
  • Atle Mysterud

Tidsskrift

Parasites & Vectors
ISSN 1756-3305
e-ISSN 1756-3305
NVI-nivå 1

Om resultatet

Vitenskapelig artikkel
Publiseringsår: 2012
Publisert online: 2012
Volum: 5
Hefte: 251
Artikkelnummer: 251
Open Access

Importkilder

Scopus-ID: 2-s2.0-84868651448
Isi-ID: 000311969500001

Beskrivelse Beskrivelse

Tittel

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

Sammendrag

Background: The 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. Methods: In 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. Results: Deer 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. Conclusions: Deer 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. Keywords: Bogs, Deer ked, GIS, Habitat, Latitude, Longitude, Moose density, Prevalence, Infestation intensity, Scots pine

Bidragsytere

Aktiv cristin-person

Knut Madslien

  • Tilknyttet:
    Forfatter
    ved Husdyr, vilt og velferd ved Veterinærinstituttet

Bjørnar Ytrehus

  • Tilknyttet:
    Forfatter
    ved Husdyr, vilt og velferd ved Veterinærinstituttet
Aktiv cristin-person

Hildegunn Viljugrein

  • Tilknyttet:
    Forfatter
    ved Epidemiologi ved Veterinærinstituttet
  • Tilknyttet:
    Forfatter
    ved Centre for Ecological and Evolutionary Synthesis ved Universitetet i Oslo
  • Tilknyttet:
    Forfatter
    ved Institutt for biovitenskap (tidl. BIO) ved Universitetet i Oslo

Erling Johan Solberg

  • Tilknyttet:
    Forfatter
    ved NINA terrestrisk økologi ved Norsk institutt for naturforskning

Kent Rudi Bråten

  • Tilknyttet:
    Forfatter
    ved Institutt for skog- og utmarksfag ved Høgskolen i Innlandet
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