Biological monitoring of inhibitory effects of antifouling agent Irgarol 1051 on growth and essential metabolites of marine alga Chlorella salina
Abstract
Irgarol 1051 (2-(tert-butylamino)-4-(cyclopropylamino)-6-(methylthio)-1,3,5-triazine) is a biocide used in antifouling paint on ships to prevent fouling growth. It is widely used booster herbicides and it may exert potent toxic effects on marine primary producers such as microalgae, where majority of the toxicity data are based on changing in growth and inhibition of essential metabolites. Data of the toxic effects on microorganisms may be used to define the upper limits for concentration of pollutants and to predict environmental toxicity risk. So, the aim of this work was concentrated on the effect of the booster biocide Irgarol 1051 on growth and content of some essential metabolites namely protein, carbohydrates, amino acids and fatty acids of marine planktonic alga Chlorella salina.
The result obtained proved that, increasing of antifouling concentration caused notable decreasing in growth depending on the concentration used. The presence of antifouling agent Irgarol 1051 in the seawater especially in areas with heavy shipping activity due to its application in antifouling paints will cause decreasing in nutrient value of proteins in this type of algae as well as the negative impact on the essential amino acids. Carbohydrates content decreased by increasing the concentration of Irgarol. A serious decrease in the content of Omega-3 fatty acids and in turn this will affect the crop of the marine fish since fishes cannot synthesis these types of fatty acids.
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DOI: http://dx.doi.org/10.21622/MARLOG.2022.11.145
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The International Maritime Transport and Logistics Journal (MARLOG)
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