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Published Online November 30, 2006
Science DOI: 10.1126/science.1135875

Reports

Submitted on October 3, 2006
Accepted on November 16, 2006

Homoploid Hybrid Speciation in an Extreme Habitat

Zachariah Gompert 1*, James A. Fordyce 2, Matthew L. Forister 3, Arthur M. Shapiro 4, Chris C. Nice 1

1 Department of Biology, Population and Conservation Biology Program, Texas State University, San Marcos, TX 78666, USA.
2 Department of Ecology and Evolutionary Biology, University of Tennessee, Knoxville, TN 37996, USA.
3 Department of Natural Resources and Environmental Science, University of Nevada, Reno, NV 89512, USA.
4 Section of Evolution and Ecology, University of California, Davis, CA 95616, USA.

* To whom correspondence should be addressed.
Zachariah Gompert , E-mail: zg1002{at}txstate.edu

Theory predicts that homoploid hybrid speciation, which is hybrid speciation without a change in chromosome number, is facilitated by adaptation to a novel or extreme habitat. Using molecular and ecological data, we show that the alpine-adapted butterflies in the genus Lycaeides are the product of hybrid speciation. The alpine populations possess a mosaic genome derived from both L. melissa and L. idas and are differentiated from, and younger than, their putative parental species. As predicted, adaptive traits may allow for persistence in the environmentally extreme alpine habitat and reproductively isolate these populations from their parental species.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
An introduced and a native vertebrate hybridize to form a genetic bridge to a second native species.
D. B. McDonald, T. L. Parchman, M. R. Bower, W. A. Hubert, and F. J. Rahel (2008)
PNAS 105, 10837-10842
   Abstract »    Full Text »    PDF »
Hybrid vigor between native and introduced salamanders raises new challenges for conservation.
B. M. Fitzpatrick and H. B. Shaffer (2007)
PNAS 104, 15793-15798
   Abstract »    Full Text »    PDF »

E-Letters:

Read all E-Letters

Homoploid Hybrid Speciation
Vladimir Lukhtanov
Science Online, 13 Mar 2007 [Full text]
Response to Lukhtanov
Zachariah Gompert, et al.
Science Online, 13 Mar 2007 [Full text]

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Science. ISSN 0036-8075 (print), 1095-9203 (online)