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Ecophysiological effects of mercury bioaccumulation and biochemical stress in the deep-water mesopredator Etmopterus spinax (Elasmobranchii; Etmopteridae)

2022Journal article Restricted access
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dc.contributor.authorRodrigues, Andreia C.M.
dc.contributor.authorGravato, Carlos
dc.contributor.authorGalvão, Daniela
dc.contributor.authorSilva, Virgília S.
dc.contributor.authorSoares, Amadeu M.V.M.
dc.contributor.authorGonçalves, Jorge Manuel Santos
dc.contributor.authorEllis, Jim R.
dc.contributor.authorVieira, Rui P.
dc.date.accessioned2021-11-10T20:38:42Z
dc.date.available2023-09-01T00:30:15Z
dc.date.issued2022
dc.description.abstractMercury (Hg) is a non-essential metal that can have toxic effects on the fitness of organisms and tends to bioaccumulate with age and to biomagnify in higher trophic levels. Few studies have assessed oxidative stress and neurotoxicity in deep-water sharks. This study evaluated early ontogenetic changes and physiological effects (antioxidant defences, oxidative damage, aerobic metabolism and neurotransmission functions) of Hg accumulation in the white muscle and brain tissues of the velvet belly lantern shark Etmopterus spinax from the southern Iberian coast (NE Atlantic). Results suggested that the low mercury concentrations observed may induce acute effects in E. spinax before they reach sexual maturity. We found different Hg concentrations in E. spinax: [Hg] males > [Hg] females; [Hg] muscle > [Hg] brain. Females appeared to have higher redox capability translated into higher activities and levels of antioxidant defences than males. However, higher levels of oxidative damage were also observed in females. Whilst the mechanisms underlying these effects remain unknown, these results suggest differences in mercury accumulation between tissues and sex, and potentially deleterious effects on oxidative stress status and neurophysiology of E. spinax, potentially impairing swimming performance and reproduction, which could subsequently impact on the health of both individuals and population.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1016/j.jhazmat.2021.127245pt_PT
dc.identifier.issn0304-3894
dc.identifier.urihttp://hdl.handle.net/10400.1/17316
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationCentre for Environmental and Marine Studies
dc.relationAlgarve Centre for Marine Sciences
dc.relationCHANGES IN DEEP-SEA BENTHIC COMMUNITIES AND FISHERIES IN THE EUROPEAN MARGIN: ASSESSING ENVIRONMENTAL DRIVERS AND ANTHROPOGENIC IMPACTS
dc.relationCentre for Environmental and Marine Studies
dc.subjectBioconcentrationpt_PT
dc.subjectElasmobranchiipt_PT
dc.subjectMetal contaminationpt_PT
dc.subjectBiochemical responsespt_PT
dc.subjectDeep seapt_PT
dc.titleEcophysiological effects of mercury bioaccumulation and biochemical stress in the deep-water mesopredator Etmopterus spinax (Elasmobranchii; Etmopteridae)pt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleCentre for Environmental and Marine Studies
oaire.awardTitleAlgarve Centre for Marine Sciences
oaire.awardTitleCHANGES IN DEEP-SEA BENTHIC COMMUNITIES AND FISHERIES IN THE EUROPEAN MARGIN: ASSESSING ENVIRONMENTAL DRIVERS AND ANTHROPOGENIC IMPACTS
oaire.awardTitleCentre for Environmental and Marine Studies
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F50017%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04326%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBD%2F84030%2F2012/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F50017%2F2020/PT
oaire.citation.startPage127245pt_PT
oaire.citation.titleJournal of Hazardous Materialspt_PT
oaire.citation.volume423pt_PT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
person.familyNameGonçalves
person.givenNameJorge Manuel Santos
person.identifier356846
person.identifier.ciencia-id1013-ED6A-65EB
person.identifier.orcid0000-0001-7704-8190
person.identifier.ridG-5206-2011
person.identifier.scopus-author-id7103326116
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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