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

TitleShort-term exposure of the European sea bass Dicentrarchus labrax to copper-based antifouling treated nets: Copper bioavailability and biomarkers responses
Publication TypeJournal Article
Year of Publication2012
AuthorsCotou, E, Henry M, Zeri C, Rigos G, Torreblanca A, Catsiki V-A
JournalChemosphere
Volume89
Issue9
Pages1091 - 1097
KeywordsAntifouling paints, Biomarkers, Copper bioavailability, Dicentrarchus labrax, Immunomarkers, Oxidative stress
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 (184μgL-1) but low concentration in muscle (1.5μgg-1) and liver (117μgg-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. © 2012 Elsevier Ltd.

URLhttp://www.scopus.com/inward/record.url?eid=2-s2.0-84865737122&partnerID=40&md5=756a3c35cf896d33539cf359b2ee5701
DOI10.1016/j.chemosphere.2012.05.075

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