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- Title
Interactions among quantitative traits in the course of sympatric speciation.
- Authors
Kondrashov, A S; Kondrashov, F A
- Abstract
Sympatric speciation, the origin of two or more species from a single local population, has almost certainly been involved in formation of several species flocks, and may be fairly common in nature. The most straightforward scenario for sympatric speciation requires disruptive selection favouring two substantially different phenotypes, and consists of the evolution of reproductive isolation between them followed by the elimination of all intermediate phenotypes. Here we use the hypergeometric phenotypic model to show that sympatric speciation is possible even when fitness and mate choice depend on different quantitative traits, so that speciation must involve formation of covariance between these traits. The increase in the number of variable loci affecting fitness facilitates sympatric speciation, whereas the increase in the number of variable loci affecting mate choice has the opposite effect. These predictions may enable more cases of sympatric speciation to be identified.
- Publication
Nature, 1999, Vol 400, Issue 6742, p351
- ISSN
0028-0836
- Publication type
Journal Article
- DOI
10.1038/22514