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Why does the introduced gastropod Crepidula fornicata fail to invade Arcachon Bay (France)?

dc.rights.licenseopenen_US
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorDE MONTAUDOUIN, Xavier
IDREF: 075931664
dc.contributor.authorLABARRAQUE, D.
dc.contributor.authorGIRAUD, K.
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorBACHELET, Guy
dc.date.accessioned2023-10-09T09:19:09Z
dc.date.available2023-10-09T09:19:09Z
dc.date.issued2001-02-01
dc.identifier.issn0025-3154en_US
dc.identifier.urioai:crossref.org:10.1017/s0025315401003447
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/184346
dc.description.abstractEnArcachon Bay was the last important shell culture area of the French Atlantic coast without a stock assessment of the accidentally introduced Crepidula fornicata (Gastropoda). Following a stratified sampling strategy, 205 stations were sampled with a dredge. The total biomass of C. fornicata was estimated at 155 tn (confidence limits: 72 tn) scattered on 2·4 km2, i.e. about 5% of the infralittoral area. This biomass is very low compared to other exploited shellfish sites. Amongst mean environmental parameters (such as bathymetry, temperature, salinity, sediment grain-size, anthropic activity), the major keyfactors differentiating Arcachon Bay from other French sites were searched to explain the differences in C. fornicata colonization pattern. It seems that the low biomass of C. fornicata, 30 y after its occurrence was first recorded in the bay, could be correlated to: (1) the scarcity of subtidal muddy sediments which are suitable for C. fornicata settlement; (2) the presence of large Zostera spp. beds on both intertidal and subtidal areas; and (3) the absence of bottom trawl fishing. Growth, production and productivity (P/B) ratios were compared between five stations characterized by different hydrological and sediment parameters. Growth and productivity (0·3 y−1) were not affected by mean biomass suggesting a lack of population regulation by intraspecific competition.
dc.language.isoENen_US
dc.sourcecrossref
dc.title.enWhy does the introduced gastropod Crepidula fornicata fail to invade Arcachon Bay (France)?
dc.typeArticle de revueen_US
dc.identifier.doi10.1017/s0025315401003447en_US
dc.subject.halSciences de l'environnementen_US
bordeaux.journalJournal of the Marine Biological Association of the UKen_US
bordeaux.page97-104en_US
bordeaux.volume81en_US
bordeaux.hal.laboratoriesEPOC : Environnements et Paléoenvironnements Océaniques et Continentaux - UMR 5805en_US
bordeaux.issue1en_US
bordeaux.institutionUniversité de Bordeauxen_US
bordeaux.institutionCNRSen_US
bordeaux.teamECOBIOCen_US
bordeaux.peerReviewedouien_US
bordeaux.inpressnonen_US
bordeaux.import.sourcedissemin
hal.identifierhal-04232926
hal.version1
hal.date.transferred2023-10-09T09:19:11Z
hal.popularnonen_US
hal.audienceInternationaleen_US
hal.exporttrue
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=Journal%20of%20the%20Marine%20Biological%20Association%20of%20the%20UK&rft.date=2001-02-01&rft.volume=81&rft.issue=1&rft.spage=97-104&rft.epage=97-104&rft.eissn=0025-3154&rft.issn=0025-3154&rft.au=DE%20MONTAUDOUIN,%20Xavier&LABARRAQUE,%20D.&GIRAUD,%20K.&BACHELET,%20Guy&rft.genre=article


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