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Appl Environ Microbiol. 1968 December; 16(12): 1901-1906
Copyright © 1968 American Society for Microbiology. All Rights Reserved.

Characteristics of Myxobacteria Isolated from the Surface of Freshwater Fish¹

Department of Microbiology, Oregon State University, Corvallis, Oregon 97331

ABSTRACT

A study was made of 32 nonpathogenic myxobacterial isolates obtained from a variety of fish taken in the Pacific Northwest. Morphological, cultural, biochemical, and serological studies were carried out on these strains. All were found to be members of the genus Cytophaga. Two myxobacterial strains pathogenic to fish were also included in this study for comparative purposes. These pathogenic organisms were found to be culturally and physiologically similar to some of the nonpathogenic strains. Antiserum against the pathogenic species, however, showed no cross agglutination when tested against the other myxobacterial isolates. As a result, serological procedures appear promising as a rapid means for distinguishing pathogenic myxobacteria from one another and from saprophytic myxobacteria commonly found on fish.

¹ Technical paper no. 2396, Oregon Agricultural Experiment Station.