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Plant neighbour identity and invasive pathogen infection affect associational resistance to an invasive gall wasp

hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorFERNANDEZ-CONRADI, Pilar
hal.structure.identifierInstitut Sophia Agrobiotech [ISA]
dc.contributor.authorBOROWIEC, Nicolas
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorCAPDEVIELLE, Xavier
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorCASTAGNEYROL, Bastien
hal.structure.identifierUniversità degli Studi di Firenze = University of Florence = Université de Florence [UniFI]
dc.contributor.authorMALTONI, Alberto
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorROBIN, Cécile
hal.structure.identifierUniversità degli Studi di Firenze = University of Florence = Université de Florence [UniFI]
dc.contributor.authorSELVI, Federico
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorVAN HALDER, Inge
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorVETILLARD, Fabrice
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorJACTEL, Herve
dc.date.issued2018
dc.identifier.issn1387-3547
dc.description.abstractEnTheory predicts that mixed forests are more resistant to native pests than pure forests (i.e. associational resistance) because of reduced host accessibility and increased top-down control by natural enemies. Yet, whether the same mechanisms also apply to invasive pests remains to be verified. We tested the hypothesis of associational resistance against the invasive Asian chestnut gall wasp (ACGW, Dryocosmus kuriphilus) by comparing ACGW infestation rates on chestnuts (Castanea sativa) in stands varying in species composition (chestnut alone or associated with oaks, pines or ashes). We investigated the effects of reduced chestnut density and frequency in mixed stands, as well as the effect of biotic interactions between ACGW, its parasitoids and the chestnut blight disease (caused by Cryphonectria parasitica). ACGW infestation rates were significantly lower in chestnut-oak and chestnut-ash mixtures than in pure chestnut stands and chestnut-pine mixtures. Infestation rate decreased with decreasing chestnut relative proportion. The composition of native parasitoid communities emerged from galls significantly differed between pure and mixed chestnut stands, but not the species richness or abundance of parasitoids. The abundance of the introduced parasitoid Torymus sinensis was not correlated with ACGW infestation rates and was independent of stand composition. Blight symptoms modified ACGW infestation rates with taller trees being preferred when they were asymptomatic but avoided when they presented blight disease damage. Our results suggest that conservation biological control based on tree species mixtures could contribute to reducing the damage of invasive forest pests.
dc.language.isoen
dc.publisherSpringer Verlag
dc.subjectinvasive pest
dc.subjectnatural enemies
dc.subject.enbiodiversity
dc.subject.enassociational resistance
dc.subject.endryocosmus kuriphilus
dc.subject.encryphonectria parasitica
dc.title.enPlant neighbour identity and invasive pathogen infection affect associational resistance to an invasive gall wasp
dc.typeArticle de revue
dc.identifier.doi10.1007/s10530-017-1637-4
dc.subject.halSciences du Vivant [q-bio]
dc.subject.halSciences de l'environnement
bordeaux.journalBiological Invasions
bordeaux.page1459-1473
bordeaux.volume20
bordeaux.issue6
bordeaux.peerReviewedoui
hal.identifierhal-02621192
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02621192v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Biological%20Invasions&rft.date=2018&rft.volume=20&rft.issue=6&rft.spage=1459-1473&rft.epage=1459-1473&rft.eissn=1387-3547&rft.issn=1387-3547&rft.au=FERNANDEZ-CONRADI,%20Pilar&BOROWIEC,%20Nicolas&CAPDEVIELLE,%20Xavier&CASTAGNEYROL,%20Bastien&MALTONI,%20Alberto&rft.genre=article


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