Ecological character displacement caused by reproductive interference

Junji Konuma, Satoshi Chiba

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

We carried out a theoretical investigation of whether ecological character displacement can be caused by reproductive interference. Our model assumes that a quantitative character is associated with both resource use and species recognition, and that heterospecific mating incurs costs. The model shows that ecological character displacement can occur as a consequence of evolution of premating isolation; this conclusion is based on the premise that resource competition is less intense between species than within species and that the ecological character also contributes to premating isolation. When resource competition between species is intense, extinction of either species may occur by competitive exclusion before ecological character divergence. Some observational studies have shown that character displacement in body size is associated with not only resources use but also species recognition. We propose that body size displacement can occur as a consequence of evolution of premating isolation. Our results suggest that ecological character displacement results from reproductive character displacement.

Original languageEnglish
Pages (from-to)354-364
Number of pages11
JournalJournal of Theoretical Biology
Volume247
Issue number2
DOIs
Publication statusPublished - 2007 Jul 21

Keywords

  • Adaptive radiation
  • Body size
  • Competitive exclusion
  • Reproductive character displacement
  • Resource competition

ASJC Scopus subject areas

  • Statistics and Probability
  • Modelling and Simulation
  • Biochemistry, Genetics and Molecular Biology(all)
  • Immunology and Microbiology(all)
  • Agricultural and Biological Sciences(all)
  • Applied Mathematics

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