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Gastric cryptosporidiosis in freshwater angelfish (Pterophyllum scalare)

Journal of Veterinary Diagnostic Investigation

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Abstract

A freshwater angelfish (Pterophyllum scalare) hatchery experienced variable levels of emaciation, poor growth rates, swollen coelomic cavities, anorexia, listlessness, and increased mortality within their fish. Multiple chemotherapeutic trials had been attempted without success. In affected fish, large numbers of protozoa were identified both histologically and ultrastructurally associated with the gastric mucosa. The youngest cohort of parasitized fish was the most severely affected and demonstrated the greatest morbidity and mortality. The protozoa were morphologically most consistent with Cryptosporidium. All of the protozoan life stages were identified ultrastructurally and protozoal genomic DNA was isolated from parasitized tissue viscera and sequenced. Histological, ultrastructural, genetic, and phylogenetic analyses confirmed this protozoal organism to be a novel species of Cryptosporidium.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Gastric cryptosporidiosis in freshwater angelfish (Pterophyllum scalare)
Series title:
Journal of Veterinary Diagnostic Investigation
Volume
21
Issue:
5
Year Published:
2009
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Journal of Veterinary Diagnostic Investigation
First page:
722
Last page:
727