Assessing the efficacy of spray-delivered 'eco-friendly' chemicals for the control and eradication of marine fouling pests

Biofouling
Richard F PiolaBarrie M Forrest

Abstract

Despite its frequent use in terrestrial and freshwater systems, there is a lack of published experimental research examining the effectiveness of spray-delivered chemicals for the management of non-indigenous and/or unwanted pests in marine habitats. This study tested the efficacy of spraying acetic acid, hydrated lime and sodium hypochlorite for the control of marine fouling assemblages. The chemicals are considered relatively 'eco-friendly' due to their low toxicity and reduced environmental persistence compared to synthetic biocides, and they were effective in controlling a wide range of organisms. Pilot trials highlighted acetic acid as the most effective chemical at removing fouling cover, therefore it was selected for more comprehensive full-scale trials. A single spray of 5% acetic acid with an exposure time of 1 min effectively removed up to 55% of the invertebrate species present and 65% of the cover on fouled experimental plates, while one application of 10% acetic acid over 30 min removed up to 78% of species present and 95% of cover. Single-spray treatments of 5% acetic acid reduced cover of the tunicate pest species Didemnum vexillum by up to 100% depending on the exposure duration, while repeat-spraying ensured th...Continue Reading

References

Oct 12, 1999·Matrix Biology : Journal of the International Society for Matrix Biology·I G OtternessP S Mézes
Apr 27, 2002·Nature·David K A Barnes
Feb 25, 2006·Marine Pollution Bulletin·Colin J L Taylor
Feb 26, 2010·Biofouling·Richard F PiolaEmma L Johnston
Feb 26, 2010·Biofouling·Ian C DavidsonGregory M Ruiz

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Citations

Oct 16, 2013·Ecotoxicology and Environmental Safety·Carlo PrettiGiancarlo Galli
Jul 11, 2012·Biofouling·Isla FitridgeRocky de Nys
Feb 5, 2014·Journal of Colloid and Interface Science·Gregory D BixlerStephen C Lee
Oct 8, 2014·Biofouling·Javier AtalahBarrie M Forrest
Feb 27, 2016·Biofouling·Javier AtalahGrant A Hopkins
Mar 18, 2016·Marine Environmental Research·Natalia FilipRussell C Wyeth
Dec 3, 2014·The Science of the Total Environment·Mariana Mayer-Pinto, Barbara Lage Ignacio

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Methods Mentioned

BETA
chemical
chemical treatment
chemical treatments

Software Mentioned

ImageJ
SIMPER
ArcMap
STATISTICA

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