Seasonal variation of antifouling activities of marine algae from the Brittany coast (France)

The antifouling activity of extracts (aqueous, ethanol, and dichloromethane) of 9 marine macroalgae against bacteria, fungi, diatoms, macroalgal spores, mussel phenoloxidase activity, and barnacle cypris larvae has been investigated in relation to season in bimonthly samples from the Bay of Concarne...

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Bibliographic Details
Published in:Marine biotechnology (New York, N.Y.) N.Y.), 2004-01, Vol.6 (1), p.67-82
Main Authors: Hellio, Claire, Marechal, Jean-Philippe, Véron, Benoît, Bremer, Graham, Clare, Anthony S, Le Gal, Yves
Format: Article
Language:English
Subjects:
Algae
Animals
Anti-Bacterial Agents - pharmacology
Antifungal Agents - pharmacology
Bacillariophyceae
Bacteria - drug effects
Bacteria - growth & development
Biofilms - drug effects
Biological Factors - chemistry
Biological Factors - pharmacology
Bivalvia - enzymology
Coasts
Copper Sulfate - pharmacology
Cypris
Diatoms - drug effects
Diatoms - growth & development
Eukaryota - chemistry
France
Larva - drug effects
Larva - physiology
Marine
Marine biology
Monophenol Monooxygenase - antagonists & inhibitors
Rhodophyceae
Rhodophyta
Seasons
Seawater
Studies
Thoracica - physiology
Trialkyltin Compounds - pharmacology
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Summary:The antifouling activity of extracts (aqueous, ethanol, and dichloromethane) of 9 marine macroalgae against bacteria, fungi, diatoms, macroalgal spores, mussel phenoloxidase activity, and barnacle cypris larvae has been investigated in relation to season in bimonthly samples from the Bay of Concarneau (France). Of the extracts tested, 48.2% were active against at least one of the fouling organisms, and of these extracts, 31.2% were seasonally active with a peak of activity in summer corresponding to maximal values for water temperature, light intensity, and fouling pressure, and 17% were active throughout the year. This seasonal activity may be adaptive as it coincides with maximal fouling pressure in the Bay of Concarneau. Dichloromethane extracts of Rhodophyceae were the most active in the antifouling assays.
ISSN:1436-2228
1436-2236
DOI:10.1007/s10126-003-0020-x