Biomarkers in Nereis diversicolor (Polychaeta: Nereididae) as management tools for environmental assessment on the southwest Iberian coast

The environmental quality of the southwest Iberian coast was assessed in different areas (Ria Formosa Lagoon, Guadiana Estuary and Cadiz Bay) focusing on metal contamination (Cd, Cu, Ni, Pb and Zn) in Nereis diversicolorwhole tissues. In addition, associated toxicological effects were assessed using...

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Bibliographic Details
Published in:Scientia marina 2013-01, Vol.77 (S1), p.69-78
Main Authors: Gomes, Tânia, Gonzalez-Rey, Maria, Rodríguez-Romero, Araceli, Trombini, Chiara, Riba, Immaculada, Blasco, Julián, Bebianno, Maria João
Format: Article
Language:English
Subjects:
antioxidant enzymes
biomarkers
Brackish
lipid peroxidation
Marine
metallothionein
metals
Nereididae
Nereis
Nereis diversicolor
Polychaeta
southwest iberian coast
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Summary:The environmental quality of the southwest Iberian coast was assessed in different areas (Ria Formosa Lagoon, Guadiana Estuary and Cadiz Bay) focusing on metal contamination (Cd, Cu, Ni, Pb and Zn) in Nereis diversicolorwhole tissues. In addition, associated toxicological effects were assessed using a multibiomarker approach combining several conventional biomarkers. The set of biomarkers selected included antioxidant enzymes (catalase, superoxide dismutase and glutathione peroxidase), metallothionein and lipid peroxidation. N. diversicolor from the Ria Formosa Lagoon, Guadiana River and Cadiz Bay responded differently to metal contamination with different biomarker responses showing a clear site trend, suggesting different sources and/or magnitudes of contamination. Cadmium was a source of oxidative stress in polychaetes, mainly in Cadiz Bay, with a significant influence on antioxidant enzymes and enhancement of lipid peroxidation. The highest MT concentrations were in the Ria Formosa Lagoon and in the Guadiana River, where there was a direct relationship with high nickel concentrations. Biomarker responses of N. diversicolor are useful tools for environmental quality assessment on the southwest Iberian coast, and more specific metal biomarkers should be included in future assessments.
ISSN:0214-8358
1886-8134
DOI:10.3989/scimar.03731.27F