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Range edges and the molecular divergence of Greya moth populations

2010; Wiley; Volume: 38; Issue: 3 Linguagem: Inglês

10.1111/j.1365-2699.2010.02421.x

1365-2699

John N. Thompson, Katherine A. Rich,

Plant and animal studies

Journal of BiogeographyVolume 38, Issue 3 p. 551-563 Range edges and the molecular divergence of Greya moth populations John N. Thompson, Corresponding Author John N. Thompson John N. Thompson, Department of Ecology and Evolutionary Biology, University of California, Santa Cruz, CA 95064, USA.E-mail: [email protected]Search for more papers by this authorKatherine A. Rich, Katherine A. Rich Department of Ecology and Evolutionary Biology, University of California, Santa Cruz, CA 95064, USASearch for more papers by this author John N. Thompson, Corresponding Author John N. Thompson John N. Thompson, Department of Ecology and Evolutionary Biology, University of California, Santa Cruz, CA 95064, USA.E-mail: [email protected]Search for more papers by this authorKatherine A. Rich, Katherine A. Rich Department of Ecology and Evolutionary Biology, University of California, Santa Cruz, CA 95064, USASearch for more papers by this author First published: 10 November 2010 https://doi.org/10.1111/j.1365-2699.2010.02421.xCitations: 11Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onEmailFacebookTwitterLinkedInRedditWechat Abstract Aim We investigated the geographical pattern of genetic divergence and demographic history in the prodoxid moth Greya obscura throughout its entire geographical range in far western North America and compared it to the geographical patterns found in a previously studied species, Greya politella, which co-occurs over the same range, in the same habitats, and on the same host plants. Location The study included sites distributed throughout the California Floristic Province. Methods We used analysis of cytochrome c oxidase subunit I (COI) and amplified fragment length polymorphisms to evaluate the pattern and history of genetic continuity among populations. Results Greya obscura populations show a history of spatial expansion with considerable haplotype diversity in the centre of the geographical range. As with G. politella, some range-edge populations of G. obscura are sufficiently divergent (6.7% in COI) to be considered as potentially cryptic species. Greya obscura and G. politella, however, differ in the specific range-edge sites showing greatest genetic divergence and cryptic speciation. Main conclusions These results corroborate the view that range edges are important cradles of divergence and speciation. In addition, the results indicate that the geographical pattern of divergence at edges may differ even among closely related species occupying the same habitats and using the same hosts. References Althoff, D.M. & Pellmyr, O. (2002) Examining genetic structure in a bogus yucca moth: a sequential approach to phylogeography. Evolution, 56, 1632–1643. 10.1111/j.0014-3820.2002.tb01475.x PubMedWeb of Science®Google Scholar Althoff, D.M., Groman, J.D., Segraves, K.A. & Pellmyr, O. 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