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From Antarctica to the subtropics: contrasted geographical concentrations of selenium, mercury, and persistent organic pollutants in skua chicks (Catharacta spp.)

dc.rights.licenseopenen_US
hal.structure.identifierCentre d'Études Biologiques de Chizé - UMR 7372 [CEBC]
dc.contributor.authorCARRAVIERI, Alice
hal.structure.identifierCentre d'Études Biologiques de Chizé - UMR 7372 [CEBC]
dc.contributor.authorCHEREL, Yves
hal.structure.identifierLIttoral ENvironnement et Sociétés [LIENSs]
dc.contributor.authorBRAULT-FAVROU, Maud
hal.structure.identifierLIttoral ENvironnement et Sociétés [LIENSs]
dc.contributor.authorCHURLAUD, Carine
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorPELUHET, Laurent
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorLABADIE, Pierre
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorBUDZINSKI, Hélène
ORCID: 0000-0003-1028-9154
IDREF: 070478090
hal.structure.identifierCentre d'Études Biologiques de Chizé - UMR 7372 [CEBC]
dc.contributor.authorCHASTEL, Olivier
hal.structure.identifierLIttoral ENvironnement et Sociétés [LIENSs]
dc.contributor.authorBUSTAMANTE, Paco
dc.date.accessioned2024-04-18T07:49:36Z
dc.date.available2024-04-18T07:49:36Z
dc.date.issued2017
dc.identifier.issn0269-7491en_US
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/199212
dc.description.abstractEnSeabirds integrate bioaccumulative contaminants via food intake and have revealed geographical trends of contamination in a variety of ecosystems. Pre-fledging seabird chicks are particularly interesting as bioindicators of chemical contamination, because concentrations in their tissues reflect primarily dietary sources from the local environment. Here we measured 14 trace elements and 18 persistent organic pollutants (POPs) in blood of chicks of skuas that breed in four sites encompassing a large latitudinal range within the southern Indian Ocean, from Antarctica (Adélie Land, south polar skua Catharacta maccormicki), through subantarctic areas (Crozet and Kerguelen Islands, brown skua C. lonnbergi), to the subtropics (Amsterdam Island, C. lonnbergi). Stables isotopes of carbon (δ13C, feeding habitat) and nitrogen (δ15N, trophic position) were also measured to control for the influence of feeding habits on contaminant burdens. Concentrations of mercury (Hg) and selenium (Se) were very high at all the four sites, with Amsterdam birds having the highest concentrations ever reported in chicks worldwide (4.0 ± 0.8 and 646 ± 123 µg g-1 dry weight, respectively). Blood Hg concentrations showed a clear latitudinal pattern, increasing from chicks in Antarctica to chicks in the subantarctic and subtropical islands. Interestingly, blood Se concentrations showed similar between-population differences to Hg, suggesting its involvement in protective mechanisms against Hg toxicity. Chicks’ POPs pattern was largely dominated by organochlorine pesticides, in particular DDT metabolites and hexachlorobenzene (HCB). Skua chicks from subantarctic islands presented high concentrations and diversity of POPs. By contrast, chicks from the Antarctic site overall had the lowest concentrations and diversity of both metallic and organic contaminants, with the exception of HCB and arsenic. Skua populations from these sites, being naturally exposed to different quantities of contaminants, are potentially good models for testing toxic effects in developing chicks in the wild.
dc.description.sponsorshipContaminants chez les prédateurs supérieurs polaires: niveaux et effets des polluants organiques et métaux lourds sur la physiologie du stress et le devenir des oiseaux marins des Terres Australes Françaises (TAAF) - ANR-10-CESA-0016en_US
dc.language.isoENen_US
dc.subject.enBioaccumulation
dc.subject.enBlood
dc.subject.enChick
dc.subject.enHCB
dc.subject.enSouthern Ocean
dc.subject.enStable Isotopes
dc.title.enFrom Antarctica to the subtropics: contrasted geographical concentrations of selenium, mercury, and persistent organic pollutants in skua chicks (Catharacta spp.)
dc.typeArticle de revueen_US
dc.identifier.doi10.1016/j.envpol.2017.05.053en_US
dc.subject.halSciences du Vivant [q-bio]/Toxicologie/Ecotoxicologieen_US
bordeaux.journalEnvironmental Pollutionen_US
bordeaux.page464-473en_US
bordeaux.volume228en_US
bordeaux.hal.laboratoriesEPOC : Environnements et Paléoenvironnements Océaniques et Continentaux - UMR 5805en_US
bordeaux.institutionUniversité de Bordeauxen_US
bordeaux.institutionCNRSen_US
bordeaux.peerReviewedouien_US
bordeaux.inpressnonen_US
bordeaux.import.sourcehal
hal.identifierhal-01683224
hal.version1
hal.popularnonen_US
hal.audienceInternationaleen_US
hal.exportfalse
workflow.import.sourcehal
dc.rights.ccPas de Licence CCen_US
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