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Untangling causes of variation in mercury concentration between flight feathers

dc.contributor.authorGatt, Marie C.
dc.contributor.authorFurtado, Ricardo Andrade
dc.contributor.authorGranadeiro, José P.
dc.contributor.authorLopes, Daniel
dc.contributor.authorPereira, Eduarda
dc.contributor.authorCatry, Paulo
dc.date.accessioned2021-01-20T17:13:57Z
dc.date.available2021-01-20T17:13:57Z
dc.date.issued2021
dc.description.abstractBird feathers are one of the most widely used animal tissue in mercury biomonitoring, owing to the ease of collection and storage. They are also the principal excretory pathway of mercury in birds. However, limitations in our understanding of the physiology of mercury deposition in feathers has placed doubt on the interpretation of feather mercury concentratoins. Throughout the literature, moult sequence and the depletion of the body mercury pool have been taken to explain patterns such as the decrease in feather mercury from the innermost (P1) to the outermost primary feather (P10) of the wing. However, it has been suggested that this pattern is rather a measurement artefact as a result of the increased feather mass to length ratio along the primaries, resulting in a dilution effect in heavier feathers. Here, we attempt to untangle the causes of variation in feather mercury concentrations by quantifying the mercury concentration as μg of mercury (i) per gram of feather, (ii) per millimetre of feather, and (iii) per day of feather growth in the primary feathers of Bulwer's Petrel Bulweria bulwerii chicks, effectively controlling for some of the axes of variation that may be acting in adults, and monitoring the growth rate of primary feathers in chicks. The mercury concentration in Bulwer's Petrel chicks' primaries increased from the innermost to the outermost primary for all three concentration measures, following the order of feather emergence. These observations confirm that the pattern of mercury concentration across primary feathers is not an artefact of the measure of concentration, but is likely an effect of the order of feather growth, whereby the earlier grown feathers are exposed to higher blood mercury concentrations than are later moulted feathers as a result of blood mercury depletion.pt_PT
dc.description.sponsorshipFundação para a Ciência e Tecnologia - FCTpt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationEnvironmental Pollution, 269, 1-6pt_PT
dc.identifier.doi10.1016/j.envpol.2020.116105pt_PT
dc.identifier.issn02697491
dc.identifier.urihttp://hdl.handle.net/10400.12/7915
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevier Ltd.pt_PT
dc.relationTrophic links in open oceans: combining spatial data, dietary information and biomarkers from top predators to unveil structure and functioning of subtropical pelagic ecosystems
dc.relationCauses and consequences of individual variation in migratory behaviour of Corys shearwaters
dc.relationCentre for Environmental and Marine Studies
dc.relationCentre for Environmental and Marine Studies
dc.relationMarine and Environmental Sciences Centre
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/4.0/pt_PT
dc.subjectAnimalspt_PT
dc.subjectBirdspt_PT
dc.subjectEnvironmental Monitoringpt_PT
dc.subjectMoltingpt_PT
dc.subjectFeatherspt_PT
dc.subjectMercurypt_PT
dc.titleUntangling causes of variation in mercury concentration between flight featherspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleTrophic links in open oceans: combining spatial data, dietary information and biomarkers from top predators to unveil structure and functioning of subtropical pelagic ecosystems
oaire.awardTitleCauses and consequences of individual variation in migratory behaviour of Corys shearwaters
oaire.awardTitleCentre for Environmental and Marine Studies
oaire.awardTitleCentre for Environmental and Marine Studies
oaire.awardTitleMarine and Environmental Sciences Centre
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FBIA-ANM%2F3743%2F2014/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FMAR-PRO%2F0929%2F2014/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//PD%2FBD%2F127807%2F2016/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F50017%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F50017%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04292%2F2020/PT
oaire.citation.conferencePlaceUnited Kingdompt_PT
oaire.citation.endPage6pt_PT
oaire.citation.startPage1pt_PT
oaire.citation.titleEnvironmental Pollutionpt_PT
oaire.citation.volume269pt_PT
oaire.fundingStream3599-PPCDT
oaire.fundingStream3599-PPCDT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
person.familyNameGatt
person.familyNameFurtado
person.familyNamePedro Granadeiro
person.familyNameSantos Lopes
person.familyNamede Barros Pereira
person.familyNameCatry
person.givenNameMarie Claire
person.givenNameRicardo Andrade
person.givenNameJosé
person.givenNameDaniel Filipe
person.givenNameEduarda Manuel
person.givenNamePaulo
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person.identifier.ciencia-id3114-23EB-2E89
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person.identifier.orcid0000-0001-9747-2060
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person.identifier.orcid0000-0002-7207-3474
person.identifier.orcid0000-0003-0984-9775
person.identifier.orcid0000-0002-6139-4942
person.identifier.orcid0000-0003-3000-0522
person.identifier.ridV-2509-2018
person.identifier.ridB-3485-2013
person.identifier.ridI-5408-2013
person.identifier.scopus-author-id6603758245
person.identifier.scopus-author-id7003725276
project.funder.identifierhttp://doi.org/10.13039/501100001871
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rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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