English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/110373
Share/Impact:
Statistics
logo share SHARE   Add this article to your Mendeley library MendeleyBASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Title

Quality assessment of two ecologically important ecosystems in the south coast of Portugal-oxidative stress biomarkers and proteomic analysis in Nereis diversicolor

AuthorsPereira, C.; Gomes, Tania; González-Rey, María; Blasco, Julián ; Bebianno, Maria João
KeywordsNereis diversicolor
Biomarker apprach
Proteomic analysis
Issue DateMay-2011
CitationPRIMO 16 (2011)
AbstractAquatic environments in the south of Portugal, like estuaries and marshes, support vital habitats for organisms and have their environmental situation critically dependent on the contributions of pollutant substances. The evaluation of contaminant impacts on marine organis ms and consequent quality of the coastal zone is crucial and requires efficient analytical methodologies combined with new tools. Mudflat sediments are the definitive sink for most of the chemicals introduced in aquatic environments by anthropogenic sources. Consequently, benthic species like the polychaete Nereis diversicolor that live in close contact with sediments are particularly exposed to chemical stress. In this study, the environmental quality of two important aquatic ecosystems of south of Portugal (Ria Formosa Lagoon and Guadiana Estuary) was assessed carrying out an integrated approach that combined conventional oxidative stress biomarkers (SOD, CAT, GPX, and LPO) with proteomic analysis. Polychaetes were collected in the Ria Formosa and in the Guadiana Estuary, in two winter periods (2007 and 2010). The biomarker approach indicated site and period related differences , showing a slight improvement of one site in the Ria Formosa and a decline in the other. The Guadiana Estuary presented a higher oxidative stress level for polychaetes although not markedly different between winters. As for proteomic analysis, several significant differences were detected in protein expression signatures between sites. The highest changes in protein expression profi les (PEPs) corresponded to spots from the Guadiana Estuary possibly reflecting differences between contaminant loads as well as their interactions in complex mixtures. The comparison of PEPs through time could lead to the development of new biomarkers to b e used in environmental quality assessment and its integration with biomarker responses in N. diversicolor can be a useful tool for marine pollution monitoring in these ecosystems
DescriptionTrabajo presentado en el PRIMO 16 (Pollutant Responses in Marine Organisms), celebrado en Long Beach (California, USA) del 15 al 18 de mayo de 2011.
URIhttp://hdl.handle.net/10261/110373
Appears in Collections:(ICMAN) Comunicaciones congresos
Files in This Item:
File Description SizeFormat 
accesoRestringido.pdf15,38 kBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.