Seasonal Variation of Antifouling Activities of Marine Algae from the Brittany Coast (France) |
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| Authors: | Email author" target="_blank">Claire?HellioEmail author Jean-Philippe?Marechal Beno?t?Véron Graham?Bremer Anthony?S?Clare Yves?Le Gal |
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| Affiliation: | (1) School of Marine Science & Technology, Ridley Building, University of Newcastle, Newcastle upon Tyne NE1 7RU, UK;(2) Laboratoire de Biologie et Biotechnologies Marines, Université de Caen Basse-Normandie, BP 5186, 14032 Caen cedex, France;(3) School of Biological Science, University of Portsmouth, King Henry Building, Portsmouth POI 2DY, UK;(4) Station de Biologie Marine de Muséum National d Histoire Naturelle, FRE 2125, BP 225, F29182 Concarneau, France |
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| Abstract: | 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. |
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| Keywords: | antifouling settlement bacteria barnacle diatoms fungi |
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