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Mortalities of Salmo gairdneri exposed to cultures of Gyrodinium aureolum

Published online by Cambridge University Press:  06 October 2009

R. J. Roberts
Affiliation:
Institute of Aquaculture, Stirling University, Stirling, Scotland, FK9 4LA
A. M. Bullock
Affiliation:
Scottish Marine Biological Association, Dunstaffhage Marine Research Laboratory, P.O. Box 3, Oban, Argyll, Scotland, PA34 4AD
M. Turners
Affiliation:
Scottish Marine Biological Association, Dunstaffhage Marine Research Laboratory, P.O. Box 3, Oban, Argyll, Scotland, PA34 4AD
K. Jones
Affiliation:
Scottish Marine Biological Association, Dunstaffhage Marine Research Laboratory, P.O. Box 3, Oban, Argyll, Scotland, PA34 4AD
P. Tett
Affiliation:
Scottish Marine Biological Association, Dunstaffhage Marine Research Laboratory, P.O. Box 3, Oban, Argyll, Scotland, PA34 4AD

Abstract

Rainbow trout were exposed to five different concentrations of a unialgal culture of Gyrodinium aureolum in laboratory tanks. All the concentrations used proved lethal within 24 h. The gills of the dead fish showed no mechanical occlusion by the algae but all displayed marked histological changes characterized by necrotic degeneration and disintegration of the lamellar epithelium.

Type
Research Article
Copyright
Copyright © Marine Biological Association of the United Kingdom 1983

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References

REFERENCES

Jones, K. J., Ayres, P., Bullock, A. M., Roberts, R. J. & Tett, P., 1982. A red tide of Gyrodinium aureolum in sea lochs of the Firth of Clyde and associated mortality of pond-reared salmon. Journal of the Marine Biological Association of the United Kingdom, 62, 771782.CrossRefGoogle Scholar
Parker, M., Dunne, T. & Mcardle, J., 1982. Exceptional marine blooms in Irish coastal waters. International Council for the Exploration of the Sea (CM. Papers and Reports), L: 44, 10 pp. [Mimeo.]Google Scholar
Tangen, K. & Björnland, T., 1981. Observations on pigments and morphology of Gyrodinium aureolum Hulburt, a marine dinoflagellate containing 19' -hexanoyloxyfucoxanthin as the main carotenoid. Journal of Plankton Research, 3, 389401.CrossRefGoogle Scholar