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1 July 1989 Caryospora uptoni and Frenkelia sp.-like Coccidiallnfections in Red-tailed Hawks (Buteo borealis)
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Abstract

The feces from 16 red-tailed hawks (Buteo borealis) were examined by fecal flotation for the presence of coccidial oocysts or sporocysts. Oocysts of Caryospora uptoni were found in five (31%), sporocysts of a Frenkelia sp.-like coccidium were found in eight (50%), and mixed infections with both species of coccidia were found in three (19%) red-tailed hawks. Neither oocysts nor sporocysts were found in six (38%) red-tailed hawks. Sexual stages of C. uptoni were found in the duodenum and jejunum of a naturally infected red-tailed hawk. Sexual stages were located in enterocytes on the distal three-fourths of the villi. This study shows that over 60% of red-tailed hawks may be passing coccidial oocysts/sporocysts in their feces and provides morphological information for diagnosing C. uptoni infections in histological sections.

Lindsay and Blagburn: Caryospora uptoni and Frenkelia sp.-like Coccidiallnfections in Red-tailed Hawks (Buteo borealis)
David S. Lindsay and Byron L. Blagburn "Caryospora uptoni and Frenkelia sp.-like Coccidiallnfections in Red-tailed Hawks (Buteo borealis)," Journal of Wildlife Diseases 25(3), 407-409, (1 July 1989). https://doi.org/10.7589/0090-3558-25.3.407
Received: 26 September 1988; Published: 1 July 1989
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