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Renal coccidiosis in interior Canada geese, Branta canadensis interior Todd, of the Mississippi Valley population

Journal of Wildlife Diseases

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Abstract

Kidneys from 309 Interior Canada geese from three locations in the Mississippi Flyway were examined for renal coccidia. Oocysts and/or young zygotes of Eimeria sp. were found in 6.8% of goose kidneys sampled. Only one type of renal coccidian oocyst was observed. Significantly more immature geese were infected than adults; however, there was no significant difference observed between the prevalences of infection in male and female birds. A host cellular response to zygotes and oocysts was noted in the majority of infected adult geese. Heavily infected kidneys were hypertrophic with minute foci on the surface of the organ. Histological examinations showed large numbers of unsporulated oocysts accumulated in distended collecting tubules, resulting in pressure necrosis to adjacent tissue and urate retention. Zygotes were observed in the cytoplasm of tubule cells and extracellularly in interstitial tissue. Infected tubule cells were characterized by the peripheral location of the nuclei, cytoplasmic basophilia, and cellular hypertrophy. This is the first report of an Eimeria sp. in the kidneys of Canada geese of the Mississippi Valley population.

Geospatial Extents

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Renal coccidiosis in interior Canada geese, Branta canadensis interior Todd, of the Mississippi Valley population
Series title:
Journal of Wildlife Diseases
Volume
20
Issue:
4
Year Published:
1984
Language:
English
Contributing office(s):
National Wildlife Health Center
Description:
p. 272-278
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Journal of Wildlife Diseases
First page:
272
Last page:
278
Number of Pages:
7
Country:
USA
Other Geospatial:
Mississippi Flyway
Online Only (Y/N):
N
Additional Online Files(Y/N):
N