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The impact of artificial surfaces on marine bacterial and eukaryotic biofouling assemblages : A high-throughput sequencing analysis

Résumé : Vessel hulls and underwater infrastructure can be severely impacted by marine biofouling. Knowledge on which abiotic conditions of artificial structures influence bacterial and eukaryotic community composition is limited. In this study, settlement plates with differing surface texture, orientation and copper-based anti-fouling coatings were deployed in a marina. After three months, biofouling samples were collected and bacterial and eukaryotic communities characterised using DNA metabarcoding. The copper anti-fouling coating treatments incurred the most significant compositional changes (p ≤ 0.001) within both domains. Bacterial diversity decreased, with Gammaproteobacteria becoming the dominant phylum. In contrast, protist diversity increased as well as opportunist nematodes and bryozoans; urochordates and molluscs became less abundant. Network analyses displayed complex relationships on untreated plates, while revealing a simpler, but disturbed and unstable community composition on the anti-fouling coated plates. These networks of copper treatments displayed opportunist taxa that appeared as key organisms in structuring the bacterial and eukaryotic communities.
Domaine de référence : Antifouling
Auteur von Ammon Ulla, Wood Susanna A., Laroche Olivier, Zaiko Anastasija, Tait Leigh, Lavery Shane, Inglis Graeme, Pochon Xavier
Année de parution : 2017.
Mots-clés : Anti-fouling coating, Bacterial and eukaryotic communities, Biological networks, High-throughput sequencing (HTS), Marine biofouling, Metabarcoding.
Type de document : Article de revue.
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Ce projet est financé par le Fonds Européen de Développement Régional, la Région Normandie et le Conseil Départemental de la Manche.