Gastric cryptosporidiosis in freshwater angelfish (Pterophyllum scalare)
Journal of Veterinary Diagnostic Investigation
By: B.G. Murphy, D. Bradway, T. Walsh, G.E. Sanders, and K. Snekvik
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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.
Suggested Citation
Murphy, B., Bradway, D., Walsh, T., Sanders, G., Snekvik, K., 2009, Gastric cryptosporidiosis in freshwater angelfish (Pterophyllum scalare): Journal of Veterinary Diagnostic Investigation, v. 21, no. 5, p. 722-727.
| 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 |