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The toxic dinoflagellate Alexandrium minutum disrupts daily rhythmic activities at gene transcription, physiological and behavioral levels in the oyster Crassostrea gigas

dc.rights.licenseopenen_US
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorTRAN, Damien
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorCIUTAT, Aurelie
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorMAT, Audrey
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorMASSABUAU, Jean-Charles
hal.structure.identifierLaboratoire des Sciences de l'Environnement Marin (LEMAR) [LEMAR]
dc.contributor.authorHEGARET, Helene
hal.structure.identifierLaboratoire des Sciences de l'Environnement Marin (LEMAR) [LEMAR]
dc.contributor.authorLAMBERT, Christophe
hal.structure.identifierLaboratoire des Sciences de l'Environnement Marin (LEMAR) [LEMAR]
dc.contributor.authorLE GOÏC, Nelly
hal.structure.identifierLaboratoire des Sciences de l'Environnement Marin (LEMAR) [LEMAR]
dc.contributor.authorSOUDANT, Philippe
dc.date.accessioned2024-06-18T09:40:47Z
dc.date.available2024-06-18T09:40:47Z
dc.date.issued2015-01
dc.identifier.issn0166-445Xen_US
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/200525
dc.description.abstractEnThe objective of the present work was to study the effect of the harmful alga Alexandrium minutum on the daily rhythm of the oyster Crassostrea gigas. Many metabolic and physiological functions are rhythmic in living animals. Their cycles are modeled in accordance with environmental cycles such as the day/night cycle, which are fundamental to increase the fitness of an organism in its environment. A disruption of rhythmic activities is known to possibly impact the health of an animal. This study focused in C. gigas, on a gene known to be involved in circadian rhythmicity, cryptochrome gene (CgCry), on putative clock-controlled genes involved in metabolic and physiological functions, on the length cycle of the style, a structure involved in digestion, and on the rhythmicity of valve activity involved in behavior. The results indicate that daily activity is synchronized at the gene level by light:dark cycles in C. gigas. A daily rhythm of valve activity and a difference in crystalline style length between scotophase and photophase were also demonstrated. Additionally, A. minutum exposure was shown to alter cyclic activities: in exposed oysters, gene transcription remained at a constant low level throughout a daily cycle, valve opening duration remained maximal and crystalline style length variation disappeared. The results show that a realistic bloom of A. minutum clearly can disrupt numerous and diverse molecular, physiological and behavioral functions via a loss of rhythmicity.
dc.language.isoENen_US
dc.subject.enACL
dc.subject.enCrassostrea gigas
dc.subject.enAlexandrium minutum
dc.subject.enHarmful algal bloom
dc.subject.enCyclic activities disruption
dc.subject.enDaily rhythm
dc.title.enThe toxic dinoflagellate Alexandrium minutum disrupts daily rhythmic activities at gene transcription, physiological and behavioral levels in the oyster Crassostrea gigas
dc.typeArticle de revueen_US
dc.identifier.doi10.1016/j.aquatox.2014.10.023en_US
dc.subject.halSciences du Vivant [q-bio]en_US
dc.subject.halSciences de l'environnement/Biodiversité et Ecologieen_US
bordeaux.journalAquatic Toxicologyen_US
bordeaux.page41-49en_US
bordeaux.volume158en_US
bordeaux.hal.laboratoriesEPOC : Environnements et Paléoenvironnements Océaniques et Continentaux - UMR 5805en_US
bordeaux.institutionUniversité de Bordeauxen_US
bordeaux.institutionCNRSen_US
bordeaux.teamECOBIOCen_US
bordeaux.peerReviewedouien_US
bordeaux.inpressnonen_US
bordeaux.import.sourcehal
hal.identifierhal-01089266
hal.version1
hal.popularnonen_US
hal.audienceInternationaleen_US
hal.exportfalse
workflow.import.sourcehal
dc.rights.ccPas de Licence CCen_US
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Aquatic%20Toxicology&rft.date=2015-01&rft.volume=158&rft.spage=41-49&rft.epage=41-49&rft.eissn=0166-445X&rft.issn=0166-445X&rft.au=TRAN,%20Damien&CIUTAT,%20Aurelie&MAT,%20Audrey&MASSABUAU,%20Jean-Charles&HEGARET,%20Helene&rft.genre=article


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