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Title: The influence of temperature and salinity on the impacts of lead in Mytilus galloprovincialis
Author: Freitas, Rosa
Leite, Carla
Pinto, João
Costa, Marcelo
Monteiro, Rui
Di Martino, Francesco
Coppola, Francesca
Soares, Amadeu M. V. M.
Solé, Montserrat
Pereira, Eduarda
Henriques, Bruno
Keywords: Climate change
Oxidative stress
Issue Date: Nov-2019
Publisher: Elsevier
Abstract: Mussels, such as the marine bivalve Mytilus galloprovincialis are sentinels for marine pollution but they are also excellent bioindicators under laboratory conditions. For that, in this study we tested the modulation of biochemical responses under realistic concentrations of the toxic metal Lead (Pb) in water for 28 days under different conditions of salinity and temperature, including control condition (temperature 17 ± 1.0 °C and salinity 30 ± 1.0) as well as those within the range expected to occur due to climate change predictions (± 5 in salinity and + 4 °C in temperature). A comprehensive set of biomarkers was applied to search on modulation of biochemical responses in terms of energy metabolism, energy reserves, oxidative stress and damage occurrence in lipids, proteins as well as neurotoxicity signs. The application of an integrative Principal Coordinates Ordination (PCO) tool was successful and demonstrated that Pb caused an increase in the detoxification activity mainly evidenced by glutathione S-transferases and that the salinities 25 and 35 were, even in un-exposed mussels, responsible for cell damage seen as increased levels of lipid peroxidation (at salinity 25) and oxidised proteins (at salinity 35).
Peer review: yes
DOI: 10.1016/j.chemosphere.2019.05.221
ISSN: 0045-6535
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