In northern fur seals (Callorhinus ursinus) up to at least 4 years of age there is virtually 100% prevalence of infestation with the nasal mite Orthohalarachne attenuata. Although clinical observations and gross examination indicate that the condition is not serious, some erosion and inflammation of the nasal turbinates and nasopharynx were seen associated with mites in histological sections.
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1 January 1976
LESIONS ASSOCIATED WITH Orthohalarachne attenuata (Halarachnidae) IN THE NORTHERN FUR SEAL (Callorhinus ursinus)
J. S. DUNLAP,
R. C. PIPER