Sexual and postmating reproductive isolation between allopatric Drosophila montana populations suggest speciation potential

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dc.contributor.author Jennings, Jackson
dc.contributor.author Mazzi, Dominique
dc.contributor.author Ritchie, Michael
dc.contributor.author Hoikkala, Anneli
dc.date.accessioned 2012-02-17T09:14:38Z
dc.date.available 2012-02-17T09:14:38Z
dc.date.issued 2011
dc.identifier.citation Jennings, J., Mazzi, D., Ritchie, M., & Hoikkala, A. (2011). Sexual and postmating reproductive isolation between allopatric Drosophila montana populations suggest speciation potential. BMC Evolutionary Biology, 11 (68). doi:10.1186/1471-2148-11-68
dc.identifier.issn 1741-7015
dc.identifier.uri http://hdl.handle.net/123456789/37396
dc.description.abstract Background - Widely distributed species with populations adapted to different environmental conditions can provide valuable opportunities for tracing the onset of reproductive incompatibilities and their role in the speciation process. Drosophila montana, a D. virilis group species found in high latitude boreal forests in Nearctic and Palearctic regions around the globe, could be an excellent model system for studying the early stages of speciation, as a wealth of information concerning this species' ecology, mating system, life history, genetics and phylogeography is available. However, reproductive barriers between populations have hereto not been investigated. Results - We report both pre- and postmating barriers to reproduction between flies from European (Finnish) and North American (Canadian) populations of Drosophila montana. Using a series of mate-choice designs, we show that flies from these two populations mate assortatively (i.e., exhibit significant sexual isolation) while emphasizing the importance of experimental design in these kinds of studies. We also assessed potential postmating isolation by quantifying egg and progeny production in intra- and interpopulation crosses and show a significant one-way reduction in progeny production, affecting both male and female offspring equally. Conclusion - We provide evidence that allopatric D. montana populations exhibit reproductive isolation and we discuss the potential mechanisms involved. Our data emphasize the importance of experimental design in studies on premating isolation between recently diverged taxa and suggest that postmating barriers may be due to postcopulatory-prezygotic mechanisms. D. montana populations seem to be evolving multiple barriers to gene flow in allopatry and our study lays the groundwork for future investigations of the genetic and phenotypic mechanisms underlying these barriers. fi
dc.language.iso eng
dc.publisher BioMed Central
dc.relation.ispartofseries BMC Evolutionary Biology
dc.relation.uri http://www.biomedcentral.com/bmcevolbiol
dc.rights © 2011 Jennings et al; licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
dc.rights.uri http://creativecommons.org/licenses/by/2.0
dc.subject.other lajiutuminen fi
dc.subject.other lisääntyminen fi
dc.subject.other isolaatio fi
dc.subject.other speciation en
dc.subject.other premating isolation en
dc.subject.other postmating isolation en
dc.title Sexual and postmating reproductive isolation between allopatric Drosophila montana populations suggest speciation potential
dc.type Article en
dc.identifier.urn URN:NBN:fi:jyu-201202171203
dc.subject.kota 118
dc.contributor.laitos Bio- ja ympäristötieteiden laitos fi
dc.contributor.laitos Department of Biological and Environmental Science en
dc.type.uri http://purl.org/eprint/type/JournalArticle
dc.identifier.doi doi:10.1186/1471-2148-11-68
dc.description.version Published version
eprint.status http://purl.org/eprint/type/status/PeerReviewed

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