- PDF (436 kb) - Full Text with Thumbnail Figures - Full Text
with Large Figures - Cited by in Scopus (18) - Request
permission - Ecological explanations for (incomplete) speciation
Trends in Ecology & Evolution, Volume 24, Issue 3, 1 March 2009,
Pages 145-156 Patrik Nosil, Luke J. Harmon and Ole Seehausen
AbstractDivergent natural selection has been shown to promote
speciation in many taxa. However, although divergent selection
often initiates the process of speciation, it often fails to
complete it. Several time-based, geographic and genetic factors
have been recognized to explain this variability in how far
speciation proceeds. We review here recent evidence indicating
that variability in the completeness of speciation can also be
associated with the nature of divergent selection itself, with
speciation being greatly promoted by (i) stronger selection on a
given, single trait (the ‘stronger selection’ hypothesis) and
(ii) selection on a greater number of traits (the ‘multifarious
selection’ hypothesis). Ho