Conductive hearing loss in bighorn sheep.

Linda W Norrix, D. W. DeYoung, P. R. Krausman, R. C. Etchberger, T. J. Glattke

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

In January 1993 we simulated a conductive hearing loss in three Mexican bighorn sheep (Ovis canadensis mexicana) by placing bone wax or saline solution in their ear canals. Our objective was to test whether lesions of the external auditory canal caused by psoroptic mites (Psoroptes ovis) may lead to conductive hearing loss in bighorn sheep. We assessed the effects of these manipulations using the auditory brainstem response test. Placing saline solution in the external auditory canal, which loads the tympanic membrane, had a more dramatic effect on the auditory brainstem response than did bone wax. We propose that decreased hearing sensitivity or alterations in resonance characteristics of the external auditory canal, due to psoroptic scabies lesions, may make bighorn sheep more susceptible to predation.

Original languageEnglish (US)
Pages (from-to)223-227
Number of pages5
JournalJournal of Wildlife Diseases
Volume31
Issue number2
StatePublished - Apr 1995

Fingerprint

Bighorn Sheep
Conductive Hearing Loss
Ovis canadensis
Ear Canal
hearing
sheep
canal
Brain Stem Auditory Evoked Potentials
brain stem
wax
waxes
Sodium Chloride
lesion
lesions (animal)
sodium chloride
bone
Psoroptidae
bones
Psoroptes ovis
Scabies

ASJC Scopus subject areas

  • veterinary(all)

Cite this

Norrix, L. W., DeYoung, D. W., Krausman, P. R., Etchberger, R. C., & Glattke, T. J. (1995). Conductive hearing loss in bighorn sheep. Journal of Wildlife Diseases, 31(2), 223-227.

Conductive hearing loss in bighorn sheep. / Norrix, Linda W; DeYoung, D. W.; Krausman, P. R.; Etchberger, R. C.; Glattke, T. J.

In: Journal of Wildlife Diseases, Vol. 31, No. 2, 04.1995, p. 223-227.

Research output: Contribution to journalArticle

Norrix, LW, DeYoung, DW, Krausman, PR, Etchberger, RC & Glattke, TJ 1995, 'Conductive hearing loss in bighorn sheep.', Journal of Wildlife Diseases, vol. 31, no. 2, pp. 223-227.
Norrix LW, DeYoung DW, Krausman PR, Etchberger RC, Glattke TJ. Conductive hearing loss in bighorn sheep. Journal of Wildlife Diseases. 1995 Apr;31(2):223-227.
Norrix, Linda W ; DeYoung, D. W. ; Krausman, P. R. ; Etchberger, R. C. ; Glattke, T. J. / Conductive hearing loss in bighorn sheep. In: Journal of Wildlife Diseases. 1995 ; Vol. 31, No. 2. pp. 223-227.
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