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Proc Biol Sci. 2004 Apr 7;271(1540):687-93.

Sexual selection can constrain sympatric speciation.

Author information

1
Section of Integrative Biology, University of Texas, Austin, TX 78712, USA. kirkp@mail.utexas.edu

Abstract

Recent theory has suggested that sympatric speciation can occur quite easily when individuals that are ecologically similar mate assortatively. Although many of these models have assumed that individuals have equal mating success, in nature rare phenotypes may often suffer decreased mating success. Consequently, assortative mating may often generate stabilizing sexual selection. We show that this effect can substantially impede sympatric speciation. Our results emphasize the need for data on the strength of the stabilizing component of selection generated by mating in natural populations.

PMID:
15209101
PMCID:
PMC1691651
DOI:
10.1098/rspb.2003.2645
[Indexed for MEDLINE]
Free PMC Article
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