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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Sediment quality assessment in the Guadalquivir River (SW, Spain) using caged Asian clams: A biomarker field approach

Texto completo
Autor(es):
Bonnail, Estefania [1] ; Riba, Inmaculada [2, 3] ; de Seabra, Alessandra Aloise [4] ; DelValls, T. Angel [4, 2]
Número total de Autores: 4
Afiliação do(s) autor(es):
[1] Univ Atacama CIC UDA, Ctr Invest Costeras, Ave Copayapu 485, Copiapo, Atacama - Chile
[2] Univ Cadiz, Fac Ciencias del Mar & Ambientales, Dept Quim Fis, Puerto Real - Spain
[3] Fed Univ Sao Paulo UNIFESP, Dept Marine Sci, Santos, SP - Brazil
[4] Univ Santa Cecilia, Dept Ecotoxicol, Santos, SP - Brazil
Número total de Afiliações: 4
Tipo de documento: Artigo Científico
Fonte: Science of The Total Environment; v. 650, n. 2, p. 1996-2003, FEB 10 2019.
Citações Web of Science: 2
Resumo

This study assesses the sediment quality of the Guadalquivir River watercourse between the Alcala del Rio dam and the city of Seville. The main objective of this work is to address sediment quality in the area using an integrative approach that links sediment contamination and toxicity using the Asiatic clam (Corbicula fluminea) under field conditions. This is the first study conducted in the area that use of a battery of biomarkers from exposure (GST, GPx) to adverse biological effect (DNA and histopathological damage) to identify the contamination adverse effects in a river area affected by a cocktail of different anthropogenic activities (urban, industrial, agricultural, etc.). The sediment quality characterized in the area shows a significant biological stress related to metal (loid)s at station located in Alcala del Rio in the river upper part of the studied area, being this stress toxic when approaching the city of Seville. The sediments located nearby this city showed toxicity by means of positive values in the biomarkers of effects measured in the caged clams and related to contaminants with an industrial and urban discharge origins. These results have shown the useful and strength of the biomarker approach used in this study that combines biomarker responses from exposure to effects and allows identifying the contamination adverse effects by means of using caging individuals of the Asian clam. It has been proved in the different experiments how once the exposure biomarkers reach a maximum value of their system the detoxification ability of the organisms is collapsed and then the biomarkers of effect are measured significantly in the different tissues. The use of field surveys using tolerant specie such as the Asian clam is recommendable to determine sediment quality under an integrative point of view as here reported. (C) 2018 Elsevier B.V. All rights reserved. (AU)

Processo FAPESP: 17/25936-0 - Avaliação da toxicidade de crack para mexilhões marinhos expostos a diferentes cenários de acidificação por mudanças climáticas: ToxCO2caine
Beneficiário:Camilo Dias Seabra Pereira
Linha de fomento: Auxílio à Pesquisa - Pesquisador Visitante - Internacional