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. 2017 Apr;53(2):368-371.
doi: 10.7589/2016-06-132. Epub 2017 Jan 31.

Identification of a Novel Renal Coccidian (Apicomplexa: Eimeriidae) from the Great-Horned Owl ( Bubo virginianus ), USA

Jennie M Jankovsky  1 , Mabre Brand  1 , Richard W Gerhold  1
Affiliations

Identification of a Novel Renal Coccidian (Apicomplexa: Eimeriidae) from the Great-Horned Owl ( Bubo virginianus ), USA

Jennie M Jankovsky et al. J Wildl Dis. 2017 Apr.

Abstract

We diagnosed renal coccidiosis in two of five Great-horned Owls ( Bubo virginianus ) examined in eastern Tennessee, US, 2007-13. Histopathologic examination of the kidneys revealed multifocal mild-to-moderate dilation and epithelial hyperplasia of collecting ducts. Renal collecting duct epithelial cells contained intracytoplasmic microgametocytes, macrogametocytes, and sporulating and sporulated oocysts. Renal coccidiosis in affected birds did not result in significant inflammation. Sequence analysis of the amplified partial 18S short subunit ribosomal RNA coding region from examination of formalin fixed tissue by using PCR disclosed a 93% identity to Eimeria reichenowi in GenBank, suggesting a novel Eimeria sp.

Keywords: 18s rDNA; Eimeria; Eimeria reichenowi; avian; coccidia; parasite; renal coccidiosis.

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