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dc.contributor.authorSakata, Yuzuja
dc.contributor.authorYamasaki, Michimasaja
dc.contributor.authorIsagi, Yujija
dc.contributor.authorOhgushi, Takayukija
dc.contributor.alternative坂田, ゆずja
dc.date.accessioned2014-10-27T00:43:00Z-
dc.date.available2014-10-27T00:43:00Z-
dc.date.issued2014-09-
dc.identifier.issn0012-9658ja
dc.identifier.urihttp://hdl.handle.net/2433/191027-
dc.description.abstractInvasive plants often experience rapid changes in biological interactions by escaping from their original herbivores at their new habitats, and sometimes re-associating with those herbivores afterwards. However, little is known about whether the temporal changes in herbivorous impact work as a selective agent for defensive traits of invaded plants. Solidago altissima (goldenrod) is a North American perennial that has widely invaded abandoned fields in Japan. Recently, an herbivorous insect Corythucha marmorata (lace bug), an exotic insect also from North America, which was first recorded in 2000 in Japan, has been expanding its habitat on S. altissima populations in Japan. In this study, we investigated whether the invasion of C. marmorata had a selective impact on the defensive traits of S. altissima, by conducting a field survey, a common garden experiment and microsatellite analysis. We compared quantitative genetic differentiation of traits (resistance, growth, and reproduction) and neutral molecular differentiation among 16 S. altissima populations with different establishment years of C. marmorata. The common garden experiment, in which plants were grown in a greenhouse and treated to either C. marmorata herbivory or no herbivory, revealed the presence of higher resistance, sexual reproduction, and asexual (rhizome) reproduction in populations subjected to a longer history of C. marmorata pressure. Such phenotypic variability among establishment years of lace bugs was likely driven by natural selection rather than stochastic events such as genetic drift and founder effects. In addition, when plants were exposed to lace bug herbivory, resistance had a positive relationship with sexual and asexual reproduction, although no relationship was found when plants were free from herbivory. These findings suggest that defensive traits in S. altissima have evolved locally in the last decade in response to the selective pressure of C. marmorata.ja
dc.format.mimetypeapplication/pdfja
dc.language.isoengja
dc.publisherEcological Society of Americaja
dc.rights© 2014 by the Ecological Society of Americaja
dc.subjectbiological invasionja
dc.subjectCorythucha marmorataja
dc.subjectexotic insectsja
dc.subjectgoldenrodja
dc.subjectJapanja
dc.subjectlace bugja
dc.subjectperennial plantja
dc.subjectplant defenseja
dc.subjectplant–insect interactionja
dc.subjectQ[CT] vs. F[CT]ja
dc.subjectrapid evolutionja
dc.subjectSolidago altissimaja
dc.titleAn exotic herbivorous insect drives the evolution of resistance in the exotic perennial herbja
dc.type.niitypeJournal Articleja
dc.identifier.ncidAA0063138Xja
dc.identifier.jtitleEcologyja
dc.identifier.volume95ja
dc.identifier.issue9ja
dc.identifier.spage2569ja
dc.identifier.epage2578ja
dc.relation.doi10.1890/13-1455.1ja
dc.textversionpublisherja
出現コレクション:学術雑誌掲載論文等

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