The Many Dimensions of Diet Breadth: Phytochemical, Genetic, Behavioral, and Physiological Perspectives on the Interaction between a Native Herbivore and an Exotic Host

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dc.contributor.authorHarrison, Joshua G.
dc.contributor.authorGompert, Zachariah
dc.contributor.authorFordyce, James
dc.contributor.authorBuerkle, C. Alex
dc.contributor.authorGrinstead, Rachel
dc.contributor.authorJahner, Joshua P.
dc.contributor.authorMikel, Scott
dc.contributor.authorNice, Chris C.
dc.contributor.authorSantamaria, Aldrin
dc.contributor.authorForister, Matthew L.
dc.date.accessioned2021-08-10T13:56:08Z
dc.date.available2021-08-10T13:56:08Z
dc.date.issued2016-02-02
dc.description.abstractFrom the perspective of an herbivorous insect, conspecific host plants are not identical, and intraspecific variation in host nutritional quality or defensive capacity might mediate spatially variable outcomes in plant-insect interactions. Here we explore this possibility in the context of an ongoing host breadth expansion of a native butterfly (the Melissa blue, Lycaeides melissa) onto an exotic host plant (alfalfa, Medicago sativa). We examine variation among seven alfalfa populations that differed in terms of colonization by L. melissa; specifically, we examined variation in phytochemistry, foliar protein, and plant population genetic structure, as well as responses of caterpillars and adult butterflies to foliage from the same populations. Regional patterns of alfalfa colonization by L. melissa were well predicted by phytochemical variation, and colonized patches of alfalfa showed a similar level of inter-individual phytochemical diversity. However, phytochemical variation was a poor predictor of larval performance, despite the fact that survival and weight gain differed dramatically among caterpillars reared on plants from different alfalfa populations. Moreover, we observed a mismatch between alfalfa supporting the best larval performance and alfalfa favored by ovipositing females. Thus, the axes of plant variation that mediate interactions with L. melissa depend upon herbivore life history stage, which raises important issues for our understanding of adaptation to novel resources by an organism with a complex life history.
dc.description.departmentBiology
dc.formatText
dc.format.extent21 pages
dc.format.medium1 file (.pdf)
dc.identifier.citationHarrison, J. G., Gompert, Z., Fordyce, J. A., Buerkle, C. A., Grinstead, R., Jahner, J. P., Mikel, S., Nice, C. C., Santamaria, A., & Forister, M. L. (2016). The many dimensions of diet breadth: Phytochemical, genetic, behavioral, and physiological perspectives on the interaction between a native herbivore and an exotic host. PLoS One, 11(2), e0147971.
dc.identifier.doihttps://doi.org/10.1371/journal.pone.0147971
dc.identifier.issn1932-6203
dc.identifier.urihttps://hdl.handle.net/10877/14262
dc.language.isoen
dc.publisherPublic Library of Science
dc.rights.holder© 2016 Harrison et al.
dc.rights.licenseThis work is licensed under a Creative Commons Attribution 4.0 International License.
dc.sourcePLoS One, 2016, Vol. 11, No. 2, Article e0147971.
dc.subjectalfalfa
dc.subjectphytochemicals
dc.subjectlarvae
dc.subjectphytochemistry
dc.subjectpopulation genetics
dc.subjectgenetic polymorphism
dc.subjectcaterpillars
dc.subjectoviposition
dc.subjectBiology
dc.titleThe Many Dimensions of Diet Breadth: Phytochemical, Genetic, Behavioral, and Physiological Perspectives on the Interaction between a Native Herbivore and an Exotic Host
dc.typeArticle

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