Please use this identifier to cite or link to this item: https://hdl.handle.net/10316/114902
Title: Do Freshwater and Marine Bivalves Differ in Their Response to Wildfire Ash? Effects on the Antioxidant Defense System and Metal Body Burden
Authors: Jesus, Fátima
Mesquita, Filipa
Virumbrales Aldama, Elisa
Marques, Ana
Gonçalves, Ana M. M. 
Magalhães, Luísa
Nogueira, António J. A. 
Ré, Ana
Campos, Isabel
Pereira, Joana Luísa
Gonçalves, Fernando J. M.
Abrantes, Nelson 
Serpa, Dalila
Keywords: oxidative stress; wildfire ash; enzymes activity; metal body burden; filter-feeders
Issue Date: 11-Jan-2023
Publisher: MDPI
Project: PTDC/BIA-ECO/29601/2017 
PTDC/CTA-AMB/28936/2017 
UIDP/50017/2020 
UIDB/50017/2020 
 LA/P/0069/2020/ARNET 
info:eu-repo/grantAgreement/UIDB/04292/2020 
LA/P/0094/2020 
Serial title, monograph or event: International Journal of Environmental Research and Public Health
Volume: 20
Issue: 2
Abstract: Wildfires constitute a source of contamination to both freshwater and marine ecosystems. This study aimed to compare the antioxidant defense response of the freshwater clam Corbicula fluminea and the marine cockle (Cerastoderma edule) to wildfire ash exposure and the concomitant metal body burden. Organisms were exposed to different concentrations (0%, 12.5%, 25%, 50%, and 100%) of aqueous extracts of Eucalypt ash (AEAs) from a moderate-to-high severity wildfire. The activity of various enzymes, as well as lipid peroxidation, protein content, and metal body burden, were determined after 96 h of exposure. A significant increase in the protein content of soft tissues was observed for C. edule at AEA concentrations ≥ 25%, unlike for C. fluminea. Similarly, significant effects on lipid peroxidation were observed for cockles, but not for clams. For both species, a significant effect in the total glutathione peroxidase activity was observed at AEA concentrations ≥ 25%. Relative to the control, AEAs-exposed clams showed higher Cd content, whereas AEAs-exposed cockles showed higher Cu content, thus exhibiting different responses to the exposure to wildfire ash. The susceptibility of bivalves to ashes, at environmentally relevant concentrations, raises concern about the effects of post-fire runoff to bivalve species.
URI: https://hdl.handle.net/10316/114902
ISSN: 1660-4601
DOI: 10.3390/ijerph20021326
Rights: openAccess
Appears in Collections:FCTUC Ciências da Vida - Artigos em Revistas Internacionais
I&D MARE - Artigos em Revistas Internacionais

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