Varying Herbivore Population Structure Correlates with Lack of Local Adaptation in a Geographic Variable Plant-Herbivore Interaction

dc.creatorCogni, R
dc.creatorTrigo, JR
dc.creatorFutuyma, DJ
dc.date2011
dc.dateDEC 29
dc.date2014-07-30T19:02:27Z
dc.date2015-11-26T17:50:42Z
dc.date2014-07-30T19:02:27Z
dc.date2015-11-26T17:50:42Z
dc.date.accessioned2018-03-29T00:33:58Z
dc.date.available2018-03-29T00:33:58Z
dc.identifierPlos One. Public Library Science, v. 6, n. 12, 2011.
dc.identifier1932-6203
dc.identifierWOS:000300677000021
dc.identifier10.1371/journal.pone.0029220
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/72676
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/72676
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1289758
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionLocal adaptation of parasites to their hosts due to coevolution is a central prediction of many theories in evolutionary biology. However, empirical studies looking for parasite local adaptation show great variation in outcomes, and the reasons for such variation are largely unknown. In a previous study, we showed adaptive differentiation in the arctiid moth Utetheisa ornatrix to its host plant, the pyrrolizidine alkaloid-bearing legume Crotalaria pallida, at the continental scale, but found no differentiation at the regional scale. In the present study, we sampled the same sites to investigate factors that may contribute to the lack of differentiation at the regional scale. We performed field observations that show that specialist and non-specialist polyphagous herbivore incidence varies among populations at both scales. With a series of common-garden experiments we show that some plant traits that may affect herbivory (pyrrolizidine alkaloids and extrafloral nectaries) vary at the regional scale, while other traits (trichomes and nitrogen content) just vary at the continental scale. These results, combined with our previous evidence for plant population differentiation based on larval performance on fresh fruits, suggest that U. ornatrix is subjected to divergent selection even at the regional scale. Finally, with a microsatellite study we investigated population structure of U. ornatrix. We found that population structure is not stable over time: we found population differentiation at the regional scale in the first year of sampling, but not in the second year. Unstable population structure of the herbivore is the most likely cause of the lack of regional adaptation.
dc.description6
dc.description12
dc.descriptionNSF [DEB 0807418]
dc.descriptionStony Brook University
dc.descriptionLepidoptera Foundation
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionNSF [DEB 0807418]
dc.descriptionCNPq [98/01065-7, 304473/2009-0]
dc.languageen
dc.publisherPublic Library Science
dc.publisherSan Francisco
dc.publisherEUA
dc.relationPlos One
dc.relationPLoS One
dc.rightsaberto
dc.sourceWeb of Science
dc.subjectMarginale-melampsora-lini
dc.subjectFree Amino-acids
dc.subjectPyrrolizidine Alkaloids
dc.subjectGeneralist Herbivores
dc.subjectExtrafloral Nectaries
dc.subjectChemical Defense
dc.subjectGene Flow
dc.subjectHibiscus-pernambucensis
dc.subjectSpecialist Herbivore
dc.subjectEvolutionary Ecology
dc.titleVarying Herbivore Population Structure Correlates with Lack of Local Adaptation in a Geographic Variable Plant-Herbivore Interaction
dc.typeArtículos de revistas


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