1
|
Bourdon C, Couture P, Gourves PY, Clérandeau C, Gonzalez P, Cachot J. Comparison of the accumulation and effects of copper pyrithione and copper sulphate on rainbow trout larvae. Environ Toxicol Pharmacol 2023; 104:104308. [PMID: 37926371 DOI: 10.1016/j.etap.2023.104308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Accepted: 10/31/2023] [Indexed: 11/07/2023]
Abstract
Copper pyrithione (CuPT) is used as a co-biocide in new antifouling paints but its toxicity remains little known. To compare the toxicity of copper-based compounds, rainbow trout (Oncorhynchus mykiss) larvae were exposed for 8-day to CuPT and CuSO4 at equivalent copper concentrations. CuPT exposure led to the greatest accumulation of Cu in larvae. Exposure to 10 µg.L-1 CuPT induced 99% larval mortality but only 4% for CuSO4-exposed larvae. The larval development and growth were affected by CuPT (from 0.5 µg.L-1 Cu) but not by CuSO4. Lipid peroxidation was not induced by either contaminant. The expression of genes involved in oxidative stress defence, detoxification and copper transport was induced in larvae exposed to CuSO4 and CuPT but at higher concentrations for CuPT. This study highlights the marked toxicity of CuPT for early life stages of fish and raises the question of the possible environmental risks of this antifouling compound.
Collapse
Affiliation(s)
- Charlotte Bourdon
- .Environnements et Paléoenvironnements Océaniques et Continentaux, Univ. Bordeaux, CNRS, Bordeaux INP, EPOC, UMR 5805, F-33600 Pessac, France; . Institut National de la Recherche Scientifique - Centre Eau Terre Environnement, Québec, Canada
| | - Patrice Couture
- . Institut National de la Recherche Scientifique - Centre Eau Terre Environnement, Québec, Canada
| | - Pierre-Yves Gourves
- .Environnements et Paléoenvironnements Océaniques et Continentaux, Univ. Bordeaux, CNRS, Bordeaux INP, EPOC, UMR 5805, F-33600 Pessac, France
| | - Christelle Clérandeau
- .Environnements et Paléoenvironnements Océaniques et Continentaux, Univ. Bordeaux, CNRS, Bordeaux INP, EPOC, UMR 5805, F-33600 Pessac, France
| | - Patrice Gonzalez
- .Environnements et Paléoenvironnements Océaniques et Continentaux, Univ. Bordeaux, CNRS, Bordeaux INP, EPOC, UMR 5805, F-33600 Pessac, France
| | - Jérôme Cachot
- .Environnements et Paléoenvironnements Océaniques et Continentaux, Univ. Bordeaux, CNRS, Bordeaux INP, EPOC, UMR 5805, F-33600 Pessac, France.
| |
Collapse
|