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1 January 1991 Coccidia, X-Cell Pseudotumors and Ichthyophonus sp. Infections in Walleye Pollock (Theregra chalcogramma) from Auke Bay, Alaska
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Abstract

One hundred twenty-five walleye pollock (Theragra chalcogramma) were collected from Auke Bay, Alaska (USA) in 1985 and examined for histologic evidence of disease-causing infectious agents in 1987. A Goussia sp.-like coccidium was found in the kidney tubules of 75% and an Eimeria sp.-like coccidium was found in the intestine of 18% of the fish examined. The kidney coccidium was associated with sloughing of the tubular epithelium, peritubular fibrosis and granuloma formation. The intestinal coccidium was associated with severe tissue displacement and inflammation. In addition, X-cell pseudotumors were observed in the pseudobranchs (4%), and the fungus Ichthyophonus sp. was observed in the kidney, intestine or brain of 2% of the pollock.

Eaton, Kent, and Meyers: Coccidia, X-Cell Pseudotumors and Ichthyophonus sp. Infections in Walleye Pollock (Theregra chalcogramma) from Auke Bay, Alaska
W. D. Eaton, M. L. Kent and T. R. Meyers "Coccidia, X-Cell Pseudotumors and Ichthyophonus sp. Infections in Walleye Pollock (Theregra chalcogramma) from Auke Bay, Alaska," Journal of Wildlife Diseases 27(1), (1 January 1991). https://doi.org/10.7589/0090-3558-27.1.140
Received: 18 January 1990; Accepted: ; Published: 1 January 1991
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