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Can host density attenuate parasitism?

dc.rights.licenseopenen_US
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorMAGALHAES, Luisa
dc.contributor.authorFREITAS, Rosa
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorDAIRAIN, Annabelle
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorDE MONTAUDOUIN, Xavier
IDREF: 075931664
dc.date.accessioned2023-10-04T09:04:39Z
dc.date.available2023-10-04T09:04:39Z
dc.date.issued2016-08-16
dc.identifier.issn0025-3154en_US
dc.identifier.urioai:crossref.org:10.1017/s0025315416001107
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/184304
dc.description.abstractEnBivalve populations display fluctuating densities resulting in different interactions among them and with their environment. Using the edible cockle (Cerastoderma edule) as a model, we investigated two alternative hypotheses concerning the effect of density on individual infection intensity by trematode parasites. Considering that these parasites infect cockles through filtration activity, our first hypothesis was that high host density will have a dilution effect so that infection intensity decreases with host density. Conversely, high cockle density could attract other hosts used by these trematode parasites to complete their life cycle. A 17-year monthly survey of a cockle population in Arcachon Bay, France, showed a negative correlation between the cockle density and the abundance of parasite larvae in juvenile cockles with a significant threshold when adult cockle density reached 400 ind. m−2. This result was confirmed for the four dominating trematode parasites, independently considered. Additionally, a field experiment was performed during 9 months, with cockles maintained in enclosures with two densities (200 and 800 ind. m−2). Individual cockle mean infection was 1.5 times higher at low cockle density, mainly due to one dominant trematode species (Parvatrema minutum). In conclusion and confirming the first advanced hypothesis, for certain environments, negative consequences of bivalve intraspecific competition at high density can be mitigated by lower parasite pressure.
dc.language.isoENen_US
dc.sourcecrossref
dc.subject.enBivalves
dc.subject.enCerastoderma edule
dc.subject.enparasites
dc.subject.entrematoda
dc.subject.enhost density
dc.subject.enencounter-dilution effect
dc.subject.enintraspecific facilitation
dc.title.enCan host density attenuate parasitism?
dc.typeArticle de revueen_US
dc.identifier.doi10.1017/s0025315416001107en_US
dc.subject.halSciences de l'environnementen_US
bordeaux.journalJournal of the Marine Biological Association of the UKen_US
bordeaux.page497-505en_US
bordeaux.volume97en_US
bordeaux.hal.laboratoriesEPOC : Environnements et Paléoenvironnements Océaniques et Continentaux - UMR 5805en_US
bordeaux.issue03en_US
bordeaux.institutionUniversité de Bordeauxen_US
bordeaux.institutionCNRSen_US
bordeaux.teamECOBIOCen_US
bordeaux.peerReviewedouien_US
bordeaux.inpressnonen_US
bordeaux.import.sourcedissemin
hal.identifierhal-04228022
hal.version1
hal.date.transferred2023-10-04T09:04:41Z
hal.popularnonen_US
hal.audienceInternationaleen_US
hal.exporttrue
workflow.import.sourcedissemin
dc.rights.ccPas de Licence CCen_US
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