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dc.contributor.authorLefort, Marie-Carolineen
dc.contributor.authorBoyer, Stephaneen
dc.contributor.authorDe Romans, S.en
dc.contributor.authorGlare, Travisen
dc.contributor.authorArmstrong, Karen F.en
dc.contributor.authorWorner, Susan P.en
dc.date.accessioned2015-03-03T02:08:03Z
dc.date.available2014-02-25en
dc.date.issued2014-02-25en
dc.identifier.citationLefort et al. (2014). Invasion success of a scarab beetle within its native range: host range expansion versus host-shift. PeerJ 2:e262; DOI 10.7717/peerj.262en
dc.identifier.urihttps://hdl.handle.net/10182/6486
dc.description.abstractOnly recently has it been formally acknowledged that native species can occasion-ally reach the status of 'pest or 'invasive species' within their own native range. The study of such species has potential to help unravel fundamental aspects of biological invasions. A good model for such a study is the New Zealand native scarab beetle, Costelytra zealandica (White), which even in the presence of its natural enemies has become invasive in exotic pastures throughout the country. Because C. zealandica still occurs widely within its native habitat, we hypothesised that this species has only undergone a host range expansion (ability to use equally both an ancestral and new host) onto exotic hosts rather than a host shift (loss of fitness on the ancestral host in comparison to the new host). Moreover, this host range expansion could be one of the main drivers of its invasion success. In this study, we investigated the fitness response of populations of C. zealandica from native and exotic flora, to sev-eral feeding treatments comprising its main exotic host plant as well as one of its ancestral hosts. Our results suggest that our initial hypothesis was incorrect and that C. zealandica populations occurring in exotic pastures have experienced a host-shift rather than simply a host-range expansion. This finding suggests that an exotic plant introduction can facilitate the evolution of a distinct native host-race, a phenomenon often used as evidence for speciation in phytophagous insects and which may have been instrumental to the invasion success of C. zealandica. © 2014 Lefort et al.en
dc.format.extent11en
dc.languageengen
dc.language.isoenen
dc.publisherPeerJ Inc.en
dc.relationThe original publication is available from - PeerJ Inc. - https://doi.org/10.7717/peerj.262en
dc.relation.urihttps://doi.org/10.7717/peerj.262en
dc.rightsCopyright © The Authors. Distributed under Creative Commons CC-BY 3.0en
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjecthost-raceen
dc.subjectbiotypeen
dc.subjectnative invaderen
dc.subjectscaraben
dc.subjectexotic host planten
dc.subjectCostelytra zealandicaen
dc.titleInvasion success of a scarab beetle within its native range: Host range expansion versus host-shiften
dc.typeJournal Article
lu.contributor.unitLincoln Universityen
lu.contributor.unitFaculty of Agriculture and Life Sciencesen
lu.contributor.unitDepartment of Pest Management and Conservationen
lu.contributor.unitBio-Protection Research Centreen
lu.contributor.unitResearch Management Officeen
lu.contributor.unit/LU/Research Management Office/2018 PBRF Staff groupen
dc.identifier.doi10.7717/peerj.262en
dc.subject.anzsrc0603 Evolutionary Biologyen
dc.subject.anzsrc050103 Invasive Species Ecologyen
dc.relation.isPartOfPeerJen
pubs.issue2en
pubs.notesAccepted 15 Jan 2014 article 262en
pubs.organisational-group/LU
pubs.organisational-group/LU/Agriculture and Life Sciences
pubs.organisational-group/LU/Agriculture and Life Sciences/ECOL
pubs.organisational-group/LU/BPRC
pubs.organisational-group/LU/Research Management Office
pubs.organisational-group/LU/Research Management Office/2018 PBRF Staff group
pubs.publication-statusPublisheden
pubs.volume2014en
dc.identifier.eissn2167-8359en
dc.rights.licenceAttributionen
dc.rights.licenceAttributionen
lu.identifier.orcid0000-0001-7795-8709
lu.identifier.orcid0000-0002-0750-4864
lu.identifier.orcid0000-0003-4973-2651


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