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How Cadmium Could Compromise the Completion of the European Eel’s Reproductive Migration

dc.rights.licenseopenen_US
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorPIERRON, Fabien
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorBAUDRIMONT, Magalie
IDREF: 105696722
dc.contributor.authorDUFOUR, Sylvie
dc.contributor.authorELIE, Pierre
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorBOSSY, Angélique
dc.contributor.authorBALOCHE, Sylvie
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorMESMER-DUDONS, Nathalie
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorGONZALEZ, Patrice
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorBOURDINEAUD, Jean-Paul
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorMASSABUAU, Jean-Charles
dc.date.accessioned2024-04-15T15:15:32Z
dc.date.available2024-04-15T15:15:32Z
dc.date.issued2008-06-01
dc.identifier.issn0013-936Xen_US
dc.identifier.urihttps://hal.archives-ouvertes.fr/hal-00384733
dc.identifier.urioai:researchgate.net:5246614
dc.identifier.uriftartxiker:oai:HAL:hal-00384733v1
dc.identifier.urioai:crossref.org:10.1021/es703127c
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/199015
dc.description.abstractEnThe European eel (Anguilla anguilla L.) is severely threatened with extinction. Surprisingly, even though their unusual life cycle makes them particularly vulnerable to pollution, the possible contribution of contamination remains especially poorly known. Here we have investigated the possible effect of cadmium (Cd), a widespread nonessential metal, on eel reproductive capacities. Both control and Cd precontaminated female silver eels were experimentally matured and forced to swim in metal-free conditions to mimic their reproductive migration. Cd pre-exposure was found to strongly stimulate the pituitary−gonad−liver axis of maturing female silver eels leading to early and enhanced vitellogenesis. This was followed by a strong phenomenon of oocyte atresia and eel mortality. These phenomena occurred before oocytes could reach full maturation and were associated with a large entry of both vitellogenin and Cd into the ovaries. Indeed, a redistribution of previously stored cadmium, even from the low Cd levels of control eels, was observed during sexual maturation. Atresia and mortality phenomena were also associated with an overexpression of the pituitary gene encoding the growth hormone, a marker of physiological stress and energy reserves exhaustion. Significantly, these devastating effects of Cd were observed in organisms that presented liver and kidney Cd concentrations still below those observed in eels from Cd contaminated hydrosystems. Our research shows how common levels of cadmium contamination could disrupt endocrine pathways implicated in gonad maturation and subsequently impair reproductive capacity of eel future genitors
dc.language.isoENen_US
dc.sourceresearchgate
dc.sourcebase
dc.sourcecrossref
dc.title.enHow Cadmium Could Compromise the Completion of the European Eel’s Reproductive Migration
dc.typeArticle de revueen_US
dc.identifier.doi10.1021/es703127cen_US
dc.subject.halSciences de l'environnementen_US
bordeaux.journalEnvironmental Science and Technologyen_US
bordeaux.page4607-4612en_US
bordeaux.volume42en_US
bordeaux.hal.laboratoriesEPOC : Environnements et Paléoenvironnements Océaniques et Continentaux - UMR 5805en_US
bordeaux.issue12en_US
bordeaux.institutionUniversité de Bordeauxen_US
bordeaux.institutionCNRSen_US
bordeaux.teamEAen_US
bordeaux.peerReviewedouien_US
bordeaux.inpressnonen_US
bordeaux.import.sourcedissemin
hal.popularnonen_US
hal.audienceInternationaleen_US
hal.exportfalse
workflow.import.sourcedissemin
dc.rights.ccPas de Licence CCen_US
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Environmental%20Science%20and%20Technology&rft.date=2008-06-01&rft.volume=42&rft.issue=12&rft.spage=4607-4612&rft.epage=4607-4612&rft.eissn=0013-936X&rft.issn=0013-936X&rft.au=PIERRON,%20Fabien&BAUDRIMONT,%20Magalie&DUFOUR,%20Sylvie&ELIE,%20Pierre&BOSSY,%20Ange%CC%81lique&rft.genre=article


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