Journal
TRENDS IN ECOLOGY & EVOLUTION
Volume 26, Issue 8, Pages 389-397Publisher
ELSEVIER SCIENCE LONDON
DOI: 10.1016/j.tree.2011.04.005
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Funding
- National Evolutionary Synthesis Center (NESCent) NSF [EF-0905606]
- Vienna Science and Technology Fund (WWTF)
- [DEB-0614166]
- [0919018]
- Division Of Environmental Biology
- Direct For Biological Sciences [0919018] Funding Source: National Science Foundation
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Speciation with gene flow is greatly facilitated when traits subject to divergent selection also contribute to non-random mating. Such traits have been called 'magic traits', which could be interpreted to imply that they are rare, special, or unrealistic. Here, we question this assumption by illustrating that magic traits can be produced by a variety of mechanisms, including ones in which reproductive isolation arises as an automatic by-product of adaptive divergence. We also draw upon the theoretical literature to explore whether magic traits have a unique role in speciation or can be mimicked in their effects by physically linked trait-complexes. We conclude that magic traits are more frequent than previously perceived, but further work is needed to clarify their importance.
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