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Physiological responses of Manila clams Venerupis (=Ruditapes) philippinarum with varying parasite Perkinsus olseni burden to toxic algal Alexandrium ostenfeldii exposure.

dc.rights.licenseopenen_US
dc.contributor.authorLASSUDRIE, Malwenn
dc.contributor.authorSOUDANT, Philippe
dc.contributor.authorRICHARD, Gaelle
dc.contributor.authorHENRY, Nicolas
dc.contributor.authorMEDHIOUB, Walid
dc.contributor.authorDA SILVA, Patricia Mirella
dc.contributor.authorDONVAL, Anne
dc.contributor.authorBUNEL, Melanie
dc.contributor.authorLE GOIC, Nelly
dc.contributor.authorLAMBERT, Christophe
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorDE MONTAUDOUIN, Xavier
IDREF: 075931664
dc.contributor.authorFABIOUX, Caroline
dc.contributor.authorHEGARET, Helene
dc.date.accessioned2023-10-04T08:26:44Z
dc.date.available2023-10-04T08:26:44Z
dc.date.issued2014-09-01
dc.identifier.issn0166-445Xen_US
dc.identifier.urihttp://hal.univ-brest.fr/hal-01023217
dc.identifier.urihttp://archimer.ifremer.fr/doc/00189/30022/28507.pdf
dc.identifier.uriftartxiker:oai:HAL:hal-01023217v1
dc.identifier.urioai:crossref.org:10.1016/j.aquatox.2014.05.002
dc.identifier.uriftarchimer:oai:archimer.ifremer.fr:30022
dc.identifier.uriorcid:0000-0002-5885-467X:10.1016/j.aquatox.2014.05.002
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/184296
dc.description.abstractEnManila clam stock from Arcachon Bay, France, is declining, as is commercial harvest. To understand the role of environmental biotic interactions in this decrease, effects of a toxic dinoflagellate, Alexandrium ostenfeldii, which blooms regularly in Arcachon bay, and the interaction with perkinsosis on clam physiology were investigated. Manila clams from Arcachon Bay, with variable natural levels of perkinsosis, were exposed for seven days to a mix of the nutritious microalga T-Iso and the toxic dinoflagellate A. ostenfeldii, a producer of spirolides, followed by seven days of depuration fed only T-Iso. Following sacrifice and quantification of protozoan parasite Perkinsus olseni burden, clams were divided into two groups according to intensity of the infection ("Light-Moderate" and "Moderate-Heavy"). Hemocyte and plasma responses, digestive enzyme activities, antioxidant enzyme activities in gills, and histopathological responses were analyzed. Reactive oxygen species (ROS) production in hemocytes and catalase (CAT) activity in gills increased with P. olseni intensity of infection in control clams fed T-Iso, but did not vary among A. ostenfeldii-exposed clams. Exposure to A. ostenfeldii caused tissue alterations associated with an inflammatory response and modifications in hemocyte morphology. In the gills, superoxide dismutase (SOD) activity decreased, and an increase in brown cell occurrence was seen, suggesting oxidative stress. Observations of hemocytes and brown cells in tissues during exposure and depuration suggest involvement of both cell types in detoxication processes. Results suggest that exposure to A. ostenfeldii disrupted the pro-/anti-oxidant response of clams to heavy P. olseni intensity. In addition, depressed mitochondrial membrane potential (MMP) in hemocytes of clams exposed to A. ostenfeldii suggests that mitochondrial functions are regulated to maintain homeostasis of digestive enzyme activity and condition index.
dc.language.isoENen_US
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 United States*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/us/*
dc.sourcebase
dc.sourcecrossref
dc.sourceorcid
dc.title.enPhysiological responses of Manila clams Venerupis (=Ruditapes) philippinarum with varying parasite Perkinsus olseni burden to toxic algal Alexandrium ostenfeldii exposure.
dc.typeArticle de revueen_US
dc.identifier.doi10.1016/j.aquatox.2014.05.002en_US
dc.subject.halSciences de l'environnementen_US
bordeaux.journalAquatic Toxicologyen_US
bordeaux.page27-38en_US
bordeaux.volume154en_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.sourcedissemin
hal.popularnonen_US
hal.audienceInternationaleen_US
hal.exportfalse
workflow.import.sourcedissemin
dc.rights.ccCC BY-NC-NDen_US
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Aquatic%20Toxicology&rft.date=2014-09-01&rft.volume=154&rft.spage=27-38&rft.epage=27-38&rft.eissn=0166-445X&rft.issn=0166-445X&rft.au=LASSUDRIE,%20Malwenn&SOUDANT,%20Philippe&RICHARD,%20Gaelle&HENRY,%20Nicolas&MEDHIOUB,%20Walid&rft.genre=article


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