Seasonal and pollution-induced variations in biomarkers of transplanted mussels within the Beagle Channel

MARINE POLLUTION BULLETIN

卷:62

Article

Giarratano, Erica¹  Gil, Monica N.²  Malanga, Gabriela³ 

[1] Ctr Austral Invest Cient CADIC CONICET, Tierra Del Fuego, Argentina

[2] Ctr Nacl Patagon CENPAT CONICET, RA-9120 Puerto Madryn, Chubut, Argentina

[3] Univ Buenos Aires, Fac Farm & Bioquim, Fisicoquim PRALIB CONICET, RA-1113 Buenos Aires, DF, Argentina

关键词: Biomarkers;    Mussels;    Heavy metals;    Lipid peroxidation;    Seasonality;   

DOI  :  10.1016/j.marpolbul.2011.03.037

来源: Elsevier

【 摘 要 】

The occurrence of biomarker variations linked to environmental factors makes it difficult to distinguish the effect of pollution. In an attempt to evaluate spatial and seasonal effects of environmental parameters on biomarker responses, mussels Mytilus edulis chilensis coming from an aquaculture farm were transplanted to several points within Ushuaia Bay (Beagle Channel) for 6 weeks in summer and winter. Activities of superoxide dismutase, catalase, glutathione-S-transferase and levels of lipid peroxidation were measured in gills and digestive gland. Cu, Zn, Fe, Cd and Pb concentrations were also assessed. Results indicated a significant effect of seasons on biological responses as well as in metal bioaccumulation showing the influence of natural factors such as dissolved oxygen, temperature and food availability. The interdependence of those environmental factors is important for the homeostasis of thermoconformers, especially regarding their oxidative metabolism and should also be taken into consideration to distinguish natural from pollution-induced variations. (C) 2011 Elsevier Ltd. All rights reserved.

【 授权许可】

Free