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Ocean acidification dampens physiological stress response to warming and contamination in a commercially-important fish (Argyrosomus regius)

2018Journal article Restricted access
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dc.contributor.authorSampaio, Eduardo
dc.contributor.authorLopes, Ana Rita
dc.contributor.authorFrancisco, Sofia
dc.contributor.authorPaula, José Ricardo
dc.contributor.authorPimentel, Marta
dc.contributor.authorLuísa Maulvault, Ana
dc.contributor.authorRepolho, Tiago
dc.contributor.authorF. Grilo, Tiago
dc.contributor.authorPousão-Ferreira, Pedro
dc.contributor.authorMarques, António
dc.contributor.authorRosa, Rui
dc.date.accessioned2020-01-19T20:24:29Z
dc.date.available2020-01-19T20:24:29Z
dc.date.issued2018
dc.description.abstractIncreases in carbon dioxide (CO2) and other greenhouse gases emissions are changing ocean temperature and carbonate chemistry (warming and acidification, respectively). Moreover, the simultaneous occurrence of highly toxic and persistent contaminants, such as methylmercury, will play a key role in further shaping the ecophysiology of marine organisms. Despite recent studies reporting mostly additive interactions between contaminant and climate change effects, the consequences of multi-stressor exposure are still largely unknown. Here we disentangled how Argyrosomus regius physiology will be affected by future stressors, by analysing organ-dependent mercury (Hg) accumulation (gills, liver and muscle) within isolated/combined warming (ΔT=4°C) and acidification (ΔpCO2=1100μatm) scenarios, as well as direct deleterious effects and phenotypic stress response over multi-stressor contexts. After 30 days of exposure, although no mortalities were observed in any treatments, Hg concentration was enhanced under warming conditions, especially in the liver. On the other hand, elevated CO2 decreased Hg accumulation and consistently elicited a dampening effect on warming and contamination-elicited oxidative stress (catalase, superoxide dismutase and glutathione-S-transferase activities) and heat shock responses. Thus, potentially unpinned on CO2-promoted protein removal and ionic equilibrium between hydrogen and reactive oxygen species, we found that co-occurring acidification decreased heavy metal accumulation and contributed to physiological homeostasis. Although this indicates that fish can be physiologically capable of withstanding future ocean conditions, additional experiments are needed to fully understand the biochemical repercussions of interactive stressors (additive, synergistic or antagonistic).pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1016/j.scitotenv.2017.11.059pt_PT
dc.identifier.issn0048-9697
dc.identifier.urihttp://hdl.handle.net/10451/41169
dc.language.isoengpt_PT
dc.publisherElsevierpt_PT
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/pii/S0048969717331170pt_PT
dc.subjectOcean acidificationpt_PT
dc.subjectMethylmercurypt_PT
dc.subjectWarmingpt_PT
dc.subjectOxidative stresspt_PT
dc.subjectAntagonistic effectspt_PT
dc.subjectArgyrosomus regiuspt_PT
dc.titleOcean acidification dampens physiological stress response to warming and contamination in a commercially-important fish (Argyrosomus regius)pt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage398pt_PT
oaire.citation.startPage388pt_PT
oaire.citation.titleScience of the Total Environmentpt_PT
oaire.citation.volume618pt_PT
person.familyNameSampaio
person.familyNameLopes
person.familyNamePaula
person.familyNameSilva Pimentel da Silva
person.familyNameMaulvault
person.familyNameRepolho
person.familyNameF. Grilo
person.familyNameRosa
person.givenNameEduardo
person.givenNameAna Rita
person.givenNameJosé Ricardo
person.givenNameMarta Cristina
person.givenNameAna Luísa
person.givenNameTiago
person.givenNameTiago
person.givenNameRui
person.identifierH-3227-2014
person.identifier298096
person.identifier430759
person.identifier.ciencia-id8413-510B-00BB
person.identifier.ciencia-id611A-674E-B9CD
person.identifier.ciencia-idA918-A209-01A3
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person.identifier.ciencia-id9F12-BC2C-5527
person.identifier.ciencia-id7812-9026-CAC2
person.identifier.ciencia-idA21C-B520-D46B
person.identifier.ciencia-id2B10-7D61-FF7A
person.identifier.orcid0000-0002-9222-2553
person.identifier.orcid0000-0002-3992-0715
person.identifier.orcid0000-0002-1729-7256
person.identifier.orcid0000-0003-3248-4479
person.identifier.orcid0000-0003-4382-1135
person.identifier.orcid0000-0002-1048-8009
person.identifier.orcid0000-0003-3403-4287
person.identifier.orcid0000-0003-2801-5178
person.identifier.ridH-3283-2014
person.identifier.ridK-6781-2014
person.identifier.ridC-4482-2013
person.identifier.ridA-4580-2009
person.identifier.scopus-author-id55427467500
person.identifier.scopus-author-id55895278700
person.identifier.scopus-author-id50461904700
person.identifier.scopus-author-id18435367300
person.identifier.scopus-author-id26534096600
person.identifier.scopus-author-id7102610088
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
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