Seasonal variation in the antifouling defence of the temperate brown alga Fucus vesiculosus

Saha, Mahasweta and Wahl, Martin (2013) Seasonal variation in the antifouling defence of the temperate brown alga Fucus vesiculosus Biofouling, 29 (6). pp. 661-668. DOI 10.1080/08927014.2013.795953.

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The important role of marine epibiotic biofilms in the interactions of the host with its environment has been acknowledged recently. Previous studies with the temperate brown macroalga Fucus vesiculosus have identified polar and non-polar compounds recovered from the algal surface that have the potential to control such biofilms. Furthermore, both the fouling pressure and the composition of the epibiotic bacterial communities on this macroalga varied seasonally. The extent to which this reflects a seasonal fluctuation of the fouling control mechanisms of the host is, however, unexplored in an ecological context. The present study investigated seasonal variation in the anti-settlement activity of surface extracts of F. vesiculosus against eight biofilm-forming bacteria isolated from rockweed-dominated habitats, including replication of two populations from two geographically distant sites. The anti-settlement activity at both sites was found to vary temporally, reaching a peak in summer/autumn. Anti-settlement activity also showed a consistent and strong difference between sites throughout the year. This study is the first to report temporal variation of antifouling defence originating from ecologically relevant surface-associated compounds.

Document Type: Article
Keywords: Fucus; anti-settlement; chemical defence; seasonal variation; antifouling
Research affiliation: OceanRep > The Future Ocean - Cluster of Excellence > FO-R08
OceanRep > The Future Ocean - Cluster of Excellence
Kiel University
OceanRep > GEOMAR > FB3 Marine Ecology > FB3-EOE-B Experimental Ecology - Benthic Ecology
Refereed: Yes
DOI etc.: 10.1080/08927014.2013.795953
ISSN: 0892-7014
Projects: Future Ocean
Date Deposited: 02 Oct 2015 09:28
Last Modified: 16 Feb 2017 10:25

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