Gastric cryptosporidiosis in freshwater angelfish (Pterophyllum scalare).

J Vet Diagn Invest 2009 Sep;21(5):722-7

Department of Veterinary Microbiology, College of Veterinary Medicine, Washington State University, Pullman, WA, USA.

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.

Download full-text PDF

Source
http://dx.doi.org/10.1177/104063870902100523DOI Listing
September 2009
4 Reads

Publication Analysis

Top Keywords

freshwater angelfish
8
pterophyllum scalare
8
angelfish pterophyllum
8
demonstrated greatest
4
severely demonstrated
4
parasitized fish
4
fish severely
4
greatest morbidity
4
morbidity mortality
4
consistent cryptosporidium
4
morphologically consistent
4
protozoa morphologically
4
mortality protozoa
4
cohort parasitized
4
gastric mucosa
4
numbers protozoa
4
large numbers
4
fish large
4
success fish
4
protozoa identified
4

References

(Supplied by CrossRef)

Fayer R et al.
Exp Parasitol. 2009

Gardiner CH et al.
1989

Similar Publications