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dc.contributor.authorLefort, Marie-Carolineen
dc.contributor.authorBoyer, Stephaneen
dc.contributor.authorVereijssen, Jessicaen
dc.contributor.authorSprague, Rowanen
dc.contributor.authorGlare, Travisen
dc.contributor.authorWorner, Susan P.en
dc.identifier.citationLefort MC, Boyer S, Vereijssen J, Sprague R, Glare TR, Worner SP. (2015) Preference of a native beetle for “exoticism,” characteristics that contribute to invasive success of Costelytra zealandica (Scarabaeidae: Melolonthinae) PeerJ 3:e1454
dc.description.abstractWidespread replacement of native ecosystems by productive land sometimes results in the outbreak of a native species. In New Zealand, the introduction of exotic pastoral plants has resulted in diet alteration of the native coleopteran species, Costelytra zealandica (White) (Scarabaeidae) such that this insect has reached the status of pest. In contrast, C. brunneum (Broun), a congeneric species, has not developed such a relationship with these ‘novel’ host plants. This study investigated the feeding preferences and fitness performance of these two closely related scarab beetles to increase fundamental knowledge about the mechanisms responsible for the development of invasive characteristics in native insects. To this end, the feeding preference of third instar larvae of both Costelytra species was investigated using an olfactometer device, and the survival and larval growth of the invasive species C. zealandica were compared on native and exotic host plants. Costelytra zealandica, when sampled from exotic pastures, was unable to fully utilise its ancestral native host and showed higher feeding preference and performance on exotic plants. In contrast, C. zealandica sampled from native grasslands did not perform significantly better on either host and showed similar feeding preferences to C. brunneum, which exhibited no feeding preference. This study suggests the possibility of strong intraspecific variation in the ability of C. zealandica to exploit native or exotic plants, supporting the hypothesis that such ability underpins the existence of distinct host-races in this species.en
dc.relationThe original publication is available from - PeerJ - -
dc.rightsCopyright © The Authors. Distributed under Creative Commons CC-BY 4.0en
dc.subjectnative invaderen
dc.subjectinvasive speciesen
dc.subjectplant-insect interactionsen
dc.subjectfeeding preferencesen
dc.subjectgrass gruben
dc.subjectNew Zealanden
dc.titlePreference of a native beetle for “exoticism,” characteristics that contribute to invasive success of Costelytra zealandica (Scarabaeidae: Melolonthinae)en
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
dc.subject.anzsrc050102 Ecosystem Functionen
dc.subject.anzsrc050103 Invasive Species Ecologyen
dc.subject.anzsrc06 Biological Sciencesen
dc.subject.anzsrc11 Medical and Health Sciencesen
pubs.organisational-group/LU/Agriculture and Life Sciences
pubs.organisational-group/LU/Agriculture and Life Sciences/ECOL
pubs.organisational-group/LU/Research Management Office
pubs.organisational-group/LU/Research Management Office/QE18

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