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Interactions between Laminaria ochroleuca and Mytilus sp. under copper exposure and salinity variability in IMTA systems

2026-08Artigo científico Acesso aberto
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datacite.subject.sdg14:Proteger a Vida Marinha
datacite.subject.sdg12:Produção e Consumo Sustentáveis
datacite.subject.sdg02:Erradicar a Fome
dc.contributor.authorCereja, Rui
dc.contributor.authorChainho, Tomás
dc.contributor.authorPereira, Alícia
dc.contributor.authorGomes, Rita V.C.
dc.contributor.authorBolotas, Daniel
dc.contributor.authorBrito, Ana C.
dc.contributor.authorDiniz, Mário S.
dc.contributor.authorR. Costa, Pedro
dc.contributor.authorMarques, António
dc.date.accessioned2026-09-16T13:32:55Z
dc.date.available2026-09-16T13:32:55Z
dc.date.issued2026-08
dc.description.abstractCopper-based antifouling paints are widely used to reduce biofouling on marine and estuarine structures. Yet, copper (Cu) can be toxic to marine organisms in the surrounding environment and aquaculture systems. Such toxicity may be enhanced by salinity reduction caused by extreme weather precipitation events that are becoming more frequent under climate change-induced alterations. The present study aims to analyze the physiological effects of the salinity (34 and 25 PSU) and copper (environmentally relevant levels, 20 μg/L) interaction in an macroalgae-mussel integrated multitrophic aquaculture (IMTA) aquaculture of Laminaria ochroleuca and Mytilus sp. Growth, photosynthetic pigments, fluorescence and bioactivity were used as indicators for L. ochroleuca, while oxidative stress biomarkers and stress response biomarkers were assessed in both species. The tested Cu concentrations did not affect macroalgae growth nor Mytilus sp. condition index. The presence of Mytilus sp. enabled a reduction in Cu accumulation in macroalgae under IMTA. Salinity reduction triggered higher Cu accumulation in Mytilus sp. rather than in L. ochroleuca. Mussels exposed to Cu exhibited similar effects of whether specimens were kept under IMTA or monoculture. Salinity had no effect on macroalgae, while macroalgae exposed to Cu under monoculture conditions suffered a reduction in chl a. The presence of Mytilus sp. enabled increased L. ochroleuca photosynthetic performance with higher Fv/Fm ratios and chl a concentrations, but reduced carotene concentrations, total phenolic content and antioxidant activity. Therefore, IMTA proved to be an effective solution against Cu contamination though with a cost in macroalgae bioactivity.eng
dc.description.sponsorshipUID/MAR/04292/2023
dc.identifier.doi10.1016/j.algal.2026.104913
dc.identifier.issn2211-9264
dc.identifier.urihttp://hdl.handle.net/10400.1/29448
dc.language.isoeng
dc.peerreviewedyes
dc.publisherElsevier BV
dc.relationApplied Molecular Biosciences Unit
dc.relationApplied Molecular Biosciences Unit
dc.relationInstitute for Health and Bioeconomy
dc.relationAquatic Research Infrastructure Network
dc.relationAlgarve Centre for Marine Sciences
dc.relationAlgarve Centre for Marine Sciences
dc.relationCentre for Marine and Environmental Research
dc.relation.ispartofAlgal Research
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/
dc.subjectWaterborne copper
dc.subjectReduced salinity
dc.subjectPhysiological stress
dc.subjectPhotosynthetic markers
dc.subjectBioactivity
dc.subjectIMTA
dc.titleInteractions between Laminaria ochroleuca and Mytilus sp. under copper exposure and salinity variability in IMTA systemseng
dc.typejournal article
dspace.entity.typePublication
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oaire.awardTitleApplied Molecular Biosciences Unit
oaire.awardTitleApplied Molecular Biosciences Unit
oaire.awardTitleInstitute for Health and Bioeconomy
oaire.awardTitleAquatic Research Infrastructure Network
oaire.awardTitleAlgarve Centre for Marine Sciences
oaire.awardTitleAlgarve Centre for Marine Sciences
oaire.awardTitleCentre for Marine and Environmental Research
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oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/LA%2FP%2F0101%2F2020/PT
oaire.citation.startPage104913
oaire.citation.titleAlgal Research
oaire.citation.volume99
oaire.fundingStream6817 - DCRRNI ID
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oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameR. Costa
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