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Related Experiment Video

Updated: Jun 9, 2026

Artificial Lung Device Priming for In Situ Fiber Bundle Surface Grafting

Artificial Lung Device Priming for In Situ Fiber Bundle Surface Grafting

Published on: March 28, 2025

Booster biocides and microfouling.

Fabienne Faÿ¹, Isabelle Linossier, David Carteau

¹Laboratoire de Biotechnologie et Chimie Marines (LBCM), UE3884, Université de Bretagne Sud (UBS), Lorient, France. fabienne.fay@univ-ubs.fr

|September 9, 2010

Summary

This study examined how biocides in antifouling paints affect marine bacteria and diatoms. Diuron and tolylfluanid inhibited biofilm formation and growth, with greater impact on diatoms than bacteria.

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Published on: June 3, 2022

Area of Science:

Marine Biology
Environmental Science
Biotechnology

Background:

Antifouling (AF) paints prevent marine organism attachment using biocides.
Organic booster biocides in AF paints pose risks to marine ecosystems.
The direct effects of biocides on marine microorganisms are not well understood.

Purpose of the Study:

Investigate the impact of diuron and tolylfluanid on marine microorganisms.
Assess effects on bacterial growth, viability, and biofilm formation.
Evaluate biocides' impact on diatom growth, biomass, and attachment.

Main Methods:

Bacterial strains (Pseudoalteromonas, Vibrio vulnificus) and diatoms (Fragilaria pinnata, Cylindrotheca closterium) were exposed to biocides.
Growth, viability, and biofilm formation were measured.
Confocal laser scanning microscopy (CLSM) analyzed biofilm structure.

Main Results:

High biocide concentrations (1000 µg/mL) inhibited bacterial growth but had minimal effect on viability.
Biocides reduced bacterial biofilm formation, cell attachment, and biofilm thickness at 10 µg/mL.
Diuron and tolylfluanid showed greater activity against diatoms than bacteria.

Conclusions:

Diuron and tolylfluanid impact marine microbial communities.
Biocides inhibit biofilm formation in marine bacteria.
Diatoms are more sensitive to these biocides than bacteria, indicating differential environmental impact.