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.articleNumber275en_US
dc.citation.issueNumber9en_US
dc.citation.journalTitleInsectsen_US
dc.citation.volumeNumber10en_US
dc.contributor.authorDoellman, Meredith M.en_US
dc.contributor.authorSchuler, Hannesen_US
dc.contributor.authorJean Saint, Gilberten_US
dc.contributor.authorHood, Glen R.en_US
dc.contributor.authorEgan, Scott P.en_US
dc.contributor.authorPowell, Thomas H.Q.en_US
dc.contributor.authorGlover, Mary M.en_US
dc.contributor.authorBruzzese, Daniel J.en_US
dc.contributor.authorSmith, James J.en_US
dc.contributor.authorYee, Wee L.en_US
dc.contributor.authorGoughnour, Robert B.en_US
dc.contributor.authorRull, Juanen_US
dc.contributor.authorAluja, Martinen_US
dc.contributor.authorFeder, Jeffrey L.en_US
dc.date.accessioned2019-10-25T16:54:18Zen_US
dc.date.available2019-10-25T16:54:18Zen_US
dc.date.issued2019en_US
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.en_US
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.en_US
dc.identifier.doihttps://doi.org/10.3390/insects10090275en_US
dc.identifier.urihttps://hdl.handle.net/1911/107514en_US
dc.language.isoengen_US
dc.publisherMDPIen_US
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 citeden_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en_US
dc.subject.keywordadaptive radiationen_US
dc.subject.keywordspeciationen_US
dc.subject.keywordsympatryen_US
dc.subject.keywordallopatryen_US
dc.subject.keywordreproductive isolationen_US
dc.titleGeographic and Ecological Dimensions of Host Plant-Associated Genetic Differentiation and Speciation in theﾠRhagoletis cingulataﾠ(Diptera: Tephritidae) Sibling Species Groupen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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