Short-term exposure of the European sea bass Dicentrarchus labrax to copper-based antifouling treated nets: copper bioavailability and biomarkers responses.

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RESEARCH PRODUCT

Short-term exposure of the European sea bass Dicentrarchus labrax to copper-based antifouling treated nets: copper bioavailability and biomarkers responses.

Christina Zeri Efthimia Cotou Georgios Rigos Morgane Henry Amparo Torreblanca Vassiliki-angelique Catsiki

subject

Environmental Engineering Thiobarbituric acid Biofouling Health Toxicology and Mutagenesis chemistry.chemical_element Aquaculture Biology medicine.disease_cause Thiobarbituric Acid Reactive Substances Biofouling chemistry.chemical_compound medicine Environmental Chemistry Animals Seawater Sea bass Glutathione Transferase Muscles Public Health Environmental and Occupational Health General Medicine General Chemistry Glutathione biology.organism_classification Pollution Copper Bioavailability Oxidative Stress chemistry Liver Environmental chemistry Acetylcholinesterase Dicentrarchus Bass Oxidative stress Biomarkers Copper Water Pollutants Chemical Disinfectants

description

Abstract We studied if the levels of copper released from antifouling treated nets used in finfish mariculture could affect the immune defense mechanism and/or induce oxidative stress in Dicentrarchus labrax , after short term exposure in laboratory experiments. Dissolved copper concentration released from the treated nets, copper bioavailability and a set of biomarkers responses were measured. Biomarkers included hemoglobin concentration, activities of lysozyme, total complement, respiratory burst, glutathione S-transferase and acetycholinesterase and concentration of thiobarbituric acid reactive substances. Results indicated elevated copper concentration in seawater (184 μg L −1 ) but low concentration in muscle (1.5 μg g −1 ) and liver (117 μg g −1 ). Copper bioavailability was independent of copper complexes with dissolved organic carbon. However, formation of copper complexes with other matrices could neither be excluded nor justified. The released copper from the treated nets did not induce oxidative stress but affected the immediate immune defense mechanism of the exposed fish making them more easily vulnerable to diseases. Consequently, copper-based antifouling treated nets could be a risk factor for D. labrax health.

year	journal	country	edition	language
2012-11-01	Chemosphere

10.1016/j.chemosphere.2012.05.075 https://pubmed.ncbi.nlm.nih.gov/22698372