Geographic and Ecological Dimensions of Host Plant-Associated Genetic Differentiation and Speciation in theﾠRhagoletis cingulataﾠ(Diptera: Tephritidae) Sibling Species Group

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dc.citation.articleNumber275
dc.citation.issueNumber9
dc.citation.journalTitleInsects
dc.citation.volumeNumber10
dc.contributor.authorDoellman, Meredith M.
dc.contributor.authorSchuler, Hannes
dc.contributor.authorJean Saint, Gilbert
dc.contributor.authorHood, Glen R.
dc.contributor.authorEgan, Scott P.
dc.contributor.authorPowell, Thomas H.Q.
dc.contributor.authorGlover, Mary M.
dc.contributor.authorBruzzese, Daniel J.
dc.contributor.authorSmith, James J.
dc.contributor.authorYee, Wee L.
dc.contributor.authorGoughnour, Robert B.
dc.contributor.authorRull, Juan
dc.contributor.authorAluja, Martin
dc.contributor.authorFeder, Jeffrey L.
dc.date.accessioned2019-10-25T16:54:18Z
dc.date.available2019-10-25T16:54:18Z
dc.date.issued2019
dc.description.abstractAscertaining the causes of adaptive radiation is central to understanding how new species arise and come to vary with their resources. The ecological theory posits adaptive radiation via divergent natural selection associated with novel resource use; an alternative suggests character displacement following speciation in allopatry and then secondary contact of reproductively isolated but ecologically similar species. Discriminating between hypotheses, therefore, requires the establishment of a key role for ecological diversification in initiating speciation versus a secondary role in facilitating co-existence. Here, we characterize patterns of genetic variation and postzygotic reproductive isolation for tephritid fruit flies in the Rhagoletis cingulata sibling species group to assess the significance of ecology, geography, and non-adaptive processes for their divergence. Our results support the ecological theory: no evidence for intrinsic postzygotic reproductive isolation was found between two populations of allopatric species, while nuclear-encoded microsatellites implied strong ecologically based reproductive isolation among sympatric species infesting different host plants. Analysis of mitochondrial DNA suggested, however, that cytoplasmic-related reproductive isolation may also exist between two geographically isolated populations within R cingulata. Thus, ecology associated with sympatric host shifts and cytoplasmic effects possibly associated with an endosymbiont may be the key initial drivers of the radiation of the R. cingulata group.
dc.identifier.citationDoellman, Meredith M., Schuler, Hannes, Jean Saint, Gilbert, et al.. "Geographic and Ecological Dimensions of Host Plant-Associated Genetic Differentiation and Speciation in theﾠRhagoletis cingulataﾠ(Diptera: Tephritidae) Sibling Species Group." <i>Insects,</i> 10, no. 9 (2019) MDPI: https://doi.org/10.3390/insects10090275.
dc.identifier.doihttps://doi.org/10.3390/insects10090275
dc.identifier.urihttps://hdl.handle.net/1911/107514
dc.language.isoeng
dc.publisherMDPI
dc.rightsThis is an open access article distributed under theﾠCreative Commons Attribution Licenseﾠwhich permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subject.keywordadaptive radiation
dc.subject.keywordspeciation
dc.subject.keywordsympatry
dc.subject.keywordallopatry
dc.subject.keywordreproductive isolation
dc.titleGeographic and Ecological Dimensions of Host Plant-Associated Genetic Differentiation and Speciation in theﾠRhagoletis cingulataﾠ(Diptera: Tephritidae) Sibling Species Group
dc.typeJournal article
dc.type.dcmiText
dc.type.publicationpublisher version
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