Blood was collected from 878 grizzly bears (Ursus arctos) in seven geographic areas of Alaska from 1973 to 1987. An enzyme-linked immunosorbent assay procedure was used to test sera for evidence of exposure to Trichinella spp. Serum antibody prevalence ranged from 5% (10 positive of 196 tested) in the Southern Region of the state to 83% (355 of 430 tested) in the Northern Region. These major discrepancies may be a result of differing food habits of bears in the major geographic areas. Prevalence was higher in older age cohorts. Neither year-of-collection nor sex had a significant effect on prevalence.
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1 July 1997
SEROLOGIC SURVEY FOR TRICHINELLA SPP. IN GRIZZLY BEARS FROM ALASKA
Randall L. Zarnke,
RAY GAMBLE,
ROBERT A. HECKERT,
JAY VER HOEF
Journal of Wildlife Diseases
Vol. 33 • No. 3
July 1997
Vol. 33 • No. 3
July 1997
grizzly bear
serology
survey
Trichinella spp.
trichinellosis
Ursus arctos