Integration of sediment contamination with multi–biomarker responses in a novel bioindicator candidate (Sepia officinalis) for risk assessment in impacted estuaries

Detalhes bibliográficos
Autor(a) principal: Rodrigo, Ana Patrícia Carreira
Data de Publicação: 2012
Tipo de documento: Dissertação
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10362/8080
Resumo: Dissertação para obtenção do Grau de Mestre em Engenharia do Ambiente
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spelling Integration of sediment contamination with multi–biomarker responses in a novel bioindicator candidate (Sepia officinalis) for risk assessment in impacted estuariesCuttlefishSado estuaryOxidative stressAquatic pollutionBiomonitoringIntegrated biomarker responseDissertação para obtenção do Grau de Mestre em Engenharia do AmbienteThe Sado estuary (SW Portugal) is an example of the type of pressures coastal areas are subjected to, encompassing fisheries, agriculture, industries and other human activities, most of which may act as sources of aquatic pollution. In order to assess the impact of aquatic contaminants onto the biota, biomonitoring is compelling and the search for suitable bioindicator organisms is mandatory. The common cuttlefish, Sepia officinalis, is a very important species to fisheries, especially in the Sado estuary, albeit yet unsurveyed in ecotoxicological studies. For the purposes of biomonitoring, cuttlefish were collected from two different sites in the Sado estuary and from an external reference area. Additionally, environmental contamination was determined from sediment samples. Sediments were characterized for granulometric fractions, total organic matter, redox potential and for the levels of metals (Cr, Ni, Cu, Zn, Cd and Pb), metalloids (As and Se), polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs) and the pesticides dichloro diphenyl trichloethane plus its main metabolites (DDTs) and hexoclorobenzene (HCB). A multi–biomarker approach was applied in two organs, digestive gland and gills, through the analysis of lipid peroxidation, total glutathione, the reduced/oxidised glutathione ratio, glutathione S–transferase activity and induction of metallothionein–like proteins. The results showed that the Sado estuary is especially contaminated by metals when compared to the reference area. In addition, even within the Sado estuary, considerable heterogeneity exists regarding sediment contamination. The biomarker responses, especially in the digestive gland, were overall consistent with sediment contamination. This relationship was less obvious in the gills, reflecting, nevertheless, high sensibility to environmental pressures. Thus, S. officinalis revealed to be a good species to address environmental contamination and likely an adequate bioindicator in environmental risk assessment programs. The integration of all biomarker responses disclosed that the levels of contamination of the Sado estuary, although considered to be moderate, cause responses and adverse effects in organisms, from which it may be inferred that current management policies have not yet been able to eradicate pollution from this ecosystem.Faculdade de Ciências e TecnologiaCosta, Maria HelenaCosta, Pedro Manuel BroaRUNRodrigo, Ana Patrícia Carreira2012-11-05T11:07:26Z20122012-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttp://hdl.handle.net/10362/8080enginfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-03-11T03:40:31Zoai:run.unl.pt:10362/8080Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:17:55.847725Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Integration of sediment contamination with multi–biomarker responses in a novel bioindicator candidate (Sepia officinalis) for risk assessment in impacted estuaries
title Integration of sediment contamination with multi–biomarker responses in a novel bioindicator candidate (Sepia officinalis) for risk assessment in impacted estuaries
spellingShingle Integration of sediment contamination with multi–biomarker responses in a novel bioindicator candidate (Sepia officinalis) for risk assessment in impacted estuaries
Rodrigo, Ana Patrícia Carreira
Cuttlefish
Sado estuary
Oxidative stress
Aquatic pollution
Biomonitoring
Integrated biomarker response
title_short Integration of sediment contamination with multi–biomarker responses in a novel bioindicator candidate (Sepia officinalis) for risk assessment in impacted estuaries
title_full Integration of sediment contamination with multi–biomarker responses in a novel bioindicator candidate (Sepia officinalis) for risk assessment in impacted estuaries
title_fullStr Integration of sediment contamination with multi–biomarker responses in a novel bioindicator candidate (Sepia officinalis) for risk assessment in impacted estuaries
title_full_unstemmed Integration of sediment contamination with multi–biomarker responses in a novel bioindicator candidate (Sepia officinalis) for risk assessment in impacted estuaries
title_sort Integration of sediment contamination with multi–biomarker responses in a novel bioindicator candidate (Sepia officinalis) for risk assessment in impacted estuaries
author Rodrigo, Ana Patrícia Carreira
author_facet Rodrigo, Ana Patrícia Carreira
author_role author
dc.contributor.none.fl_str_mv Costa, Maria Helena
Costa, Pedro Manuel Broa
RUN
dc.contributor.author.fl_str_mv Rodrigo, Ana Patrícia Carreira
dc.subject.por.fl_str_mv Cuttlefish
Sado estuary
Oxidative stress
Aquatic pollution
Biomonitoring
Integrated biomarker response
topic Cuttlefish
Sado estuary
Oxidative stress
Aquatic pollution
Biomonitoring
Integrated biomarker response
description Dissertação para obtenção do Grau de Mestre em Engenharia do Ambiente
publishDate 2012
dc.date.none.fl_str_mv 2012-11-05T11:07:26Z
2012
2012-01-01T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/masterThesis
format masterThesis
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10362/8080
url http://hdl.handle.net/10362/8080
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Faculdade de Ciências e Tecnologia
publisher.none.fl_str_mv Faculdade de Ciências e Tecnologia
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
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