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Rapid Evolution of Reproductive Isolation in the Wild: Evidence from Introduced Salmon
Andrew P. Hendry,1*John K. Wenburg,2Paul Bentzen,23Eric C. Volk,4Thomas P. Quinn3
Colonization of new environments should promote rapid speciation as
a by-product of adaptation to divergent selective regimes.Although
this process of ecological speciation is known to haveoccurred over
millennia or centuries, nothing is known about howquickly reproductive
isolation actually evolves when new environmentsare first colonized.
Using DNA microsatellites, population-specificnatural tags, and
phenotypic variation, we tested for reproductiveisolation between two
adjacent salmon populations of a commonancestry that colonized
divergent reproductive environments (ariver and a lake beach). We
found evidence for the evolution ofreproductive isolation after fewer
than 13 generations.
1 Organismic and Evolutionary Biology Program,
University of Massachusetts, Amherst, MA 01003-5810, USA.
2 Marine Molecular Biotechnology Laboratory,
University of Washington, 3707 Brooklyn Avenue Northeast, Seattle, WA
98105-6715, USA.
3 School of Aquatic and Fishery
Sciences, University of Washington, Box 355020, Seattle, WA 98195, USA.
4 Washington Department of Fish and Wildlife, 600 Capitol Way North, Olympia, WA 98501, USA.
*
To whom correspondence should be addressed. E-mail:
ahendry{at}bio.umass.edu
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In Science Magazine
LETTERS
Richard G. Gustafson, Robin Waples, Steven T. Kalinowski, Gary A. Winans;, Andrew P. Hendry, John K. Wenburg, Paul Bentzen, Eric Volk, and Thomas P. Quinn (12 January 2001) Science291 (5502), 251b.
[DOI: 10.1126/science.291.5502.251B] |Full Text »
PERSPECTIVES
Nick Barton (20 October 2000) Science290 (5491), 462.
[DOI: 10.1126/science.290.5491.462] |Summary »|Full Text »
REPORTS
Megan Higgie, Steve Chenoweth, and Mark W. Blows (20 October 2000) Science290 (5491), 519.
[DOI: 10.1126/science.290.5491.519] |Abstract »|Full Text »|PDF »
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