Pathogen exposure patterns among sympatric populations of bighorn sheep, mule deer and cattle.

R. S. Singer, D. A. Jessup, Ian Gardner, Walter M Boyce

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Abstract

We sampled sympatric bighorn sheep (Ovis canadensis, n = 31), mule deer (Odocoileus hemionus, n = 38), and domestic cattle (n = 26) in the San Bernadino Mountains of southern California (USA) for the presence of Psoroptes spp. mites and for serologic evidence of exposure to bluetongue virus (BTV) and Babesia spp. From 1991 through 1994, Psoroptes spp. infestations were found on 12 (44%) of 27 bighorn sheep. No mites were found on mule deer or cattle. The BTV serum antibody prevalence in a cohort of 26 cattle ranged from 17 to 89%. There was no evidence of exposure to BTV in the bighorn sheep or mule deer. The cumulative serum antibody prevalence of Babesia spp. during the study was 35% in 26 bighorn sheep and 85% in 20 mule deer, while antibodies were not detected in a cohort of cattle when they were sampled in May (n = 23) and December (n = 22) of 1992. Based on these results, we concluded that infestation with Psoroptes spp. and exposure to BTV was limited to bighorn sheep and cattle, respectively. In contrast, Babesia spp. infections appeared to be common in both mule deer and bighorn sheep while there was no evidence of exposure in cattle.

Original languageEnglish (US)
Pages (from-to)377-382
Number of pages6
JournalJournal of Wildlife Diseases
Volume33
Issue number2
StatePublished - Apr 1997

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Bighorn Sheep
Ovis canadensis
Odocoileus hemionus
Deer
Equidae
sympatry
sheep
deer
cattle
Bluetongue virus
pathogen
Psoroptidae
Psoroptes
pathogens
Babesia
virus
Population
antibody
Mites
mite

ASJC Scopus subject areas

  • veterinary(all)

Cite this

Pathogen exposure patterns among sympatric populations of bighorn sheep, mule deer and cattle. / Singer, R. S.; Jessup, D. A.; Gardner, Ian; Boyce, Walter M.

In: Journal of Wildlife Diseases, Vol. 33, No. 2, 04.1997, p. 377-382.

Research output: Contribution to journalArticle

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