Chemotaxis of Aeromonas hydrophila to the surface mucus of fish
Isolates of Aeromonas hydrophila from various sources show different chemotactic responses to mucus from the surface of freshwater fish. Some isolates were nonchemotactic to fish surface mucus. Isolates of A. hydrophila from fish lesions had a significantly higher chemotactic index than isolates of A. hydrophila from water. Maximum chemotactic responses occurred more often to diluted fish mucus than to undiluted samples. Fish which were experimentally stressed did not produce mucus that was more or less chemotactic than that of unstressed fish. Fish with red-sore lesions produced surface mucus which was not chemotactic to A. hydrophila. Differences between fish, for any isolate, were also not significant. The chemotactic substance(s) in fish mucus has a molecular weight of approximately 100,000 and did not appear to be labile when heated to 56/sup 0/C.
- Research Organization:
- Univ. of Puerto Rico, Rio Piedras
- DOE Contract Number:
- AS09-76EV00900
- OSTI ID:
- 5021233
- Journal Information:
- Curr. Microbiol.; (United States), Vol. 7
- Country of Publication:
- United States
- Language:
- English
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