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Methylmercury effects on migratory behaviour in glass eels (Anguilla anguilla): An experimental study using isotopic tracers

dc.rights.licenseopenen_US
dc.contributor.authorCLAVEAU, Julie
dc.contributor.authorMONPERRUS, Mathilde
dc.contributor.authorJARRY, Marc
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorBAUDRIMONT, Magalie
IDREF: 105696722
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorGONZALEZ, Patrice
ORCID: 0000-0003-2628-2993
IDREF: 14341917X
dc.contributor.authorCAVALHEIRO, Joana
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorMESMER-DUDONS, Nathalie
dc.contributor.authorBOLLIET, Valérie
dc.date.accessioned2024-04-16T10:14:45Z
dc.date.available2024-04-16T10:14:45Z
dc.date.issued2015-05-01
dc.identifier.issn1532-0456en_US
dc.identifier.urioai:crossref.org:10.1016/j.cbpc.2015.03.003
dc.identifier.uriorcid:0000-0003-4099-5869:10.1016/j.cbpc.2015.03.003
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/199099
dc.description.abstractEnThe effect of methylmercury (MeHg) on glass eels' propensity to migrate, mitochondrial activity and antioxidative defence systems was investigated. Marine glass eels were first sorted in an experimental flume according to their response to dusk. Fish responding to the decrease in light intensity by ascending in the water column and moving with or against the flow were considered as having a high propensity to migrate (migrant). Glass eels still sheltering at the end of the 24 h catching period were considered as having a low propensity to migrate and were called non-migrant. Migrant and non-migrant glass eels were then individually tagged and exposed to isotopically enriched 201MeHg (50 ng L− 1) for 11 days. The effect of contamination was studied on muscle fibre structure, and the expression level of genes involved in mitochondrial activity and antioxidative defence systems. To investigate the effect of MeHg on glass eel behaviour, migrant and non-migrant glass eels were sorted again and the bioaccumulation of 201MeHg and its demethylation product (201Hg(II)) were determined for each individual. MeHg exposure increased activity in non-migrant glass eels but not migratory behaviour. Contamination affected mitochondrial structure and metabolism and suggests a higher oxidative stress and activation of antioxidative defence systems in non-migrant glass eels. Overall, our results suggest that exposure to MeHg might induce an increase in energy expenditure and a higher vulnerability to predation in non-migrant glass eels in the wild.
dc.language.isoENen_US
dc.sourcecrossref
dc.sourceorcid
dc.title.enMethylmercury effects on migratory behaviour in glass eels (Anguilla anguilla): An experimental study using isotopic tracers
dc.typeArticle de revueen_US
dc.identifier.doi10.1016/j.cbpc.2015.03.003en_US
dc.subject.halSciences de l'environnementen_US
bordeaux.journalComparative Biochemistry and Physiology - Part C: Toxicology and Pharmacologyen_US
bordeaux.page15-27en_US
bordeaux.volume171en_US
bordeaux.hal.laboratoriesEPOC : Environnements et Paléoenvironnements Océaniques et Continentaux - UMR 5805en_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
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dc.rights.ccPas de Licence CCen_US
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Comparative%20Biochemistry%20and%20Physiology%20-%20Part%20C:%20Toxicology%20and%20Pharmacology&rft.date=2015-05-01&rft.volume=171&rft.spage=15-27&rft.epage=15-27&rft.eissn=1532-0456&rft.issn=1532-0456&rft.au=CLAVEAU,%20Julie&MONPERRUS,%20Mathilde&JARRY,%20Marc&BAUDRIMONT,%20Magalie&GONZALEZ,%20Patrice&rft.genre=article


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