Clinicopathologic, molecular, and ultrastructural features of Sarcocystis pinnipedi infection in 2 California sea lions with fatal necrotizing hepatitis.
Elliott S Chiu, Devinn M Sinnott, Martha A Delaney, Michael M Garner, Lance Adams, Bill Van Bonn, Kathleen M Colegrove, Katie Haman, Anibal G Armién, Karen Shapiro
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引用次数: 0
Abstract
Sarcocystis pinnipedi is an apicomplexan protozoal parasite that was first recognized during a mass mortality event in juvenile grey seals (Halichoerus grypus) in the northwest Atlantic Ocean. Since its identification, this parasite has been reported in various pinniped species and has been associated with fatal necrotizing hepatitis. Little is known of the host range of S. pinnipedi. Here we report 2 cases of California sea lions (Zalophus californianus) in managed care that died following an 8-d history of inappetence, vomiting, diarrhea, and progressive lethargy with elevated hepatic enzyme activities. Postmortem examination identified hepatitis and icterus. Sarcocystis schizonts and zoites were identified in regions of necrosis. Molecular and ultrastructural findings demonstrated the close relatedness of this Sarcocystis to S. canis, which produces a similar lesion in bears.
期刊介绍:
The Journal of Veterinary Diagnostic Investigation (J Vet Diagn Invest) is an international peer-reviewed journal published bimonthly in English by the American Association of Veterinary Laboratory Diagnosticians (AAVLD). JVDI is devoted to all aspects of veterinary laboratory diagnostic science including the major disciplines of anatomic pathology, bacteriology/mycology, clinical pathology, epidemiology, immunology, laboratory information management, molecular biology, parasitology, public health, toxicology, and virology.