Protein carbonyls and antioxidant defenses in corkwing wrasse ( Symphodus melops) from a heavy metal polluted and a PAH polluted site

• Published in: Marine environmental research Vol. 66; no. 2; pp. 271 - 277
• Main Authors: Almroth, Bethanie Carney, Sturve, Joachim, Stephensen, Eiríkur, Holth, Tor Fredrik, Förlin, Lars
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01.08.2008; Elsevier; Elsevier science
• Subjects: Animal and plant ecology; Animal, plant and microbial ecology; Animals; Antioxidant enzymes; Antioxidants - metabolism; Applied ecology; Biological and medical sciences; Biomarker; Ecotoxicology, biological effects of pollution; Environmental Monitoring - methods; Fish; Fundamental and applied biological sciences. Psychology; Geologic Sediments - analysis; Geologic Sediments - chemistry; Glutathione - metabolism; Heavy metals; Marine; Metals, Heavy - metabolism; Metals, Heavy - toxicity; Oxidative stress; Oxidative Stress - drug effects; Oxidative Stress - physiology; PAHs; Perciformes - metabolism; Polycyclic Aromatic Hydrocarbons - metabolism; Polycyclic Aromatic Hydrocarbons - toxicity; Protein Carbonylation - drug effects; Protein carbonyls; Sea water ecosystems; Symphodus melops; Synecology; Water Pollutants, Chemical - metabolism; Water Pollutants, Chemical - toxicity; Zoologi; Zoology; ANE, Norway, Hogvarde; ANE, Norway, Bokn; ANE, Norway, Visnes; ANE, Norway, Salvoy; Oxidative stress; Biomarker; Antioxidant enzymes; Fish; PAHs; Protein carbonyls; Heavy metals; Marine environment; Fish;Oxidative stress;Antioxidant enzymes;Biomarker;Protein carbonyls;PAHs;Heavy metals; Vertebrata; Pollution; Hydrocarbon; Pisces; Organism defense; Labridae; Antioxidant; Polycyclic aromatic compound; Protein; Heavy metal; Life Sciences
• ISSN: 0141-1136; 1879-0291
• DOI: 10.1016/j.marenvres.2008.04.002

The use of fish in environmental monitoring has become increasingly important in recent years as anthropogenic substances, many of which function as prooxidants, are accumulating in aquatic environments. We have measured a battery of antioxidant defenses as a measure of oxidative status, as well as protein carbonylation as a measure of oxidative damage, in corkwing wrasse ( Symphodus melops) captured near a disused copper mine, where water and sediment are contaminated with heavy metals, and an aluminum smelter, a site contaminated with PAHs. Results were compared to two different reference sites. Fish at the heavy metal site had lower glucose-6-phosphate dehydrogenase activity and elevated protein carbonyls (1.8 times) compared to fish from the reference site. At the PAH site, EROD was increased 2-fold, while total glutathione and methemoglobin reductase concentration, were decreased. No differences were seen in protein carbonyl levels at the PAH site. Measures of both antioxidant defenses and oxidative damage should be used when assessing effects of xenobiotics on oxidative stress in fish species.