Baseline levels of oxidative stress biomarkers in species from a subtropical estuarine system (Paranagua Bay, southern Brazil)

MARINE POLLUTION BULLETIN

卷:113

Article

Sardi, Adriana E.^1,2  Renaud, Paul E.¹  Lana, Paulo da Cunha³  Camus, Lionel^1,2 

[1] Akvaplan Niva, Fram Ctr, N-9296 Tromso, Norway

[2] Univ Tromso, Fac Sci, Fac Sci & Technol, Dept Sci & Safety, N-9037 Tromso, Norway

[3] Univ Fed Parana UFPR, Ctr Estudos Mar, POB 61, BR-83255000 Pontal Do Parana, Parana, Brazil

关键词: Antioxidant biomarkers;    Oil contamination;    Tropical species;    Multivariate analysis;    Monitoring design;    Brazil;   

DOI  :  10.1016/j.marpolbul.2016.08.014

来源: Elsevier

【 摘 要 】

Offshore petroleum exploration has increased the risks of oil spills in coastal tropical and subtropical habitats. Monitoring tools are needed to assess and protect environmental health. We determined baseline values of antioxidant biomarkers (CAT, SOD, GPx, GST, MDA) for five ecologically relevant species in a subtropical system in southern Brazil. Regional baseline levels are compared with literature data as a basis to eventually test their efficacy as post-spill monitoring tools. Differences in the antioxidant response among species, contamination, and seasons were tested using univariate and multivariate analyses. The bivalves Anomalocardia flexuosa and Crassostrea rhizophorae and the catfish Genidens genidens emerge as suitable sentinel species. Seasonality is the main factor accounting for biomarkers variability, and not background contamination level. However, interactions between season and contamination level are also significant, indicating that biomarkers respond to complex environmental settings, a fact that needs to be fully understood for designing proper monitoring programs. (C) 2016 Elsevier Ltd. All rights reserved.

【 授权许可】

Free