Genitals evolve faster than other traits in Anolis lizards

J. Klaczko, T. Ingram, J. Losos

Research output: Contribution to journalArticlepeer-review

51 Scopus citations


Male genitalia are thought to be particularly rapidly evolving morphological structures, but there have been few quantitative interspecific comparisons between the evolutionary rates of genital and nongenital traits. We characterize the morphology of hemipenes in 25 Caribbean Anolis lizard species, and compare rates of hemipenial evolution to those of traits related to ecology or visual signaling. Using phylogenetically based comparisons of rates of evolutionary divergence, we show that genital traits evolve more rapidly than nongenital traits in anoles.

Original languageEnglish
Pages (from-to)44-48
Number of pages5
JournalJournal of Zoology
Issue number1
StatePublished - Jan 1 2015


  • Brownian motion
  • Ecomorphology
  • Hemipenis
  • Phylogenetic comparative methods


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