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dc.contributor.authorLefort, Marie-Caroline
dc.contributor.authorWorner, S.P.
dc.contributor.authorRostas, M. M
dc.contributor.authorVereijsen, J.
dc.contributor.authorBoyer, Stephane
dc.date.accessioned2018-01-23T19:42:45Z
dc.date.available2018-01-23T19:42:45Z
dc.date.issued2015
dc.identifier.urihttps://hdl.handle.net/10652/4053
dc.description.abstractOccasionally, exotic plant introductions lead to the emergence of an invasive insect within its native geographical range. Such emergence could be explained by a pre-adaptation of the insect to break through the defences of the new encountered host. We investigated the fitness responses of two New Zealand endemic scarabs (Costelytra brunneum and C. zealandica) when given a diet of an exotic pasture species, Trifolium repens, whose defences were artificially triggered by the phytohormone jasmonic acid. We found differential fitness responses between the two species when they were exposed to a defence-induced diet. We observed a significant weight increase in the invasive species C. zealandica when it was fed with treated roots compared with untreated controls, whereas no significant weight increase was observed in the non-invasive C. brunneum compared with the control treatments. Our study suggests that C. zealandica has a pre-existing ability to tolerate the defence chemicals of its exotic host and, more interestingly, to benefit from them, which may explain why this species has become a serious pest of pasture throughout its native geographical range.en_NZ
dc.language.isoenen_NZ
dc.publisherNew Zealand Ecological Society, Incen_NZ
dc.relation.urihttp://newzealandecology.org/nzje/3205en_NZ
dc.rights© 2004–2015. New Zealand Ecological Society, Incen_NZ
dc.subjectbelow-ground induced defencesen_NZ
dc.subjectjasmonic aciden_NZ
dc.subjectMelolonthinaeen_NZ
dc.subjectnative invaderen_NZ
dc.subjectpre-adaptationen_NZ
dc.subjectScarabaeidaeen_NZ
dc.subjectTrifolium repensen_NZ
dc.titleResponding positively to plant defences, a candidate key trait for invasion success in phytophagous insectsen_NZ
dc.typeJournal Articleen_NZ
dc.date.updated2017-07-11T00:13:54Z
dc.rights.holderPublisheren_NZ
dc.subject.marsden050103 Invasive Species Ecologyen_NZ
dc.identifier.bibliographicCitationLefort, M-C., Worner, SP., Rostas M, M., Vereijsen, J., & Boyer, S. (2015). Responding positively to plant defences, a candidate key trait for invasion success in phytophagous insects. New Zealand Journal of Ecology, 39(1), pp.128-132.en_NZ
unitec.publication.spage128en_NZ
unitec.publication.lpage132en_NZ
unitec.publication.volume39en_NZ
unitec.publication.issue1en_NZ
unitec.publication.titleNew Zealand Journal of Ecologyen_NZ
unitec.peerreviewedyesen_NZ
unitec.identifier.roms59182en_NZ
dcterms.publisherNew Zealand Ecological Society, Inc
unitec.publication.placeChristchurch, New Zealanden_NZ


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