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Insect herbivores should follow plants escaping their relatives

hal.structure.identifierGerman Centre for Integrative Biodiversity Research [iDiv]
hal.structure.identifierEcosystèmes, biodiversité, évolution [Rennes] [ECOBIO]
dc.contributor.authorYGUEL, Benjamin
hal.structure.identifierCentre for Ecological and Evolutionary Synthesis [CEES]
dc.contributor.authorBAILEY, Richard I.
hal.structure.identifierOrigine, structure et évolution de la biodiversité [OSEB]
dc.contributor.authorVILLEMANT, Claire
hal.structure.identifierEcosystèmes, biodiversité, évolution [Rennes] [ECOBIO]
dc.contributor.authorBRAULT, Amaury
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorJACTEL, Hervé
hal.structure.identifierAlterra [Wageningen] [ESS-CC]
hal.structure.identifierEcosystèmes, biodiversité, évolution [Rennes] [ECOBIO]
dc.contributor.authorPRINZING, Andreas
dc.date.created2014
dc.date.issued2014
dc.identifier.issn0029-8549
dc.description.abstractEnNeighboring plants within a local community may be separated by many millions of years of evolutionary history, potentially reducing enemy pressure by insect herbivores. However, it is not known how the evolutionary isolation of a plant affects the fitness of an insect herbivore living on such a plant, especially the herbivore’s enemy pressure. Here, we suggest that evolutionary isolation of host plants may operate similarly as spatial isolation and reduce the enemy pressure per insect herbivore. We investigated the effect of the phylogenetic isolation of host trees on the pressure exerted by specialist and generalist enemies (parasitoids and birds) on ectophagous Lepidoptera and galling Hymenoptera.We found that the phylogenetic isolation of host trees decreases pressure by specialist enemies on these insect herbivores. In Lepidoptera, decreasing enemy pressure resulted from the density dependence of enemy attack, a mechanism often observed in herbivores. In contrast, in galling Hymenoptera, enemy pressure declined with the phylogenetic isolation of host trees per se, as well as with the parallel decline in leaf damage by non-galling insects. Our results suggest that plants that leave their phylogenetic ancestral neighborhood can trigger, partly through simple density-dependency, an enemy release and fitness increase of the few insect herbivores that succeed in tracking these plants.
dc.language.isoen
dc.publisherSpringer Verlag
dc.subject.enCommunity phylogeny
dc.subject.enMacroevolution
dc.subject.enTrophic chain
dc.subject.enParasitism rate
dc.subject.enTemperate forest
dc.title.enInsect herbivores should follow plants escaping their relatives
dc.typeArticle de revue
dc.identifier.doi10.1007/s00442-014-3026-3
dc.subject.halSciences de l'environnement/Biodiversité et Ecologie
bordeaux.journalOecologia
bordeaux.page521-532
bordeaux.volume176
bordeaux.issue2
bordeaux.peerReviewedoui
hal.identifierhal-01082979
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01082979v1
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