A light and electron microscope study of epitheliocystis in juvenile steelhead trout, Salmo gairdneri Richardson

Document Type

Article

Date of Original Version

1-1-1984

Abstract

Abstract. Ultrastructural analysis of epitheliocystis organisms from gills of anadromous juvenile steelhead trout, Salmo gairdneri Richardson, revealed the presence of several distinct forms. Two oval infectious organisms resembled previously described agents and had chlamydia‐like characteristics. One form had a distinct oval head region from which a tail‐like structure projected. These prokaryotic forms have an ultrastructural appearance which has not been described in previous reports of epitheliocystis. Morphological analyses of gill epithelial cells of S. gairdneri suggest that each cyst remains contained within the cytoplasm of a single host cell. Copyright © 1984, Wiley Blackwell. All rights reserved

Publication Title, e.g., Journal

Journal of Fish Diseases

Volume

7

Issue

4

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