A study of canalization and developmental stability in the sternopleural bristle system of Drosophila melanogaster

Evolution. 2005 Jul;59(7):1500-9.


Among the explanations for minimizing the effects of extraneous variation has been canalization and developmental stability. However, there is little agreement as to whether these two processes reflect a common set of mechanisms. This confusion is inflated due to the lack of consensus as to a precise definition of canalization. In this study, canalization in the sternopleural bristle system is used to investigate the relationships between measures of canalization and developmental stability by comparing how a panel of naturally derived lines responds to both genetic and environmental perturbations. No evidence for a common mechanism between the different measures of canalization was observed. Furthermore, a hypothesis regarding a common mechanism for environmental and genetic canalization was tested, and no evidence was found to support it. However, there is evidence for a relationship between at least one form of canalization and developmental stability.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Analysis of Variance
  • Animal Structures / embryology*
  • Animals
  • Crosses, Genetic
  • Drosophila melanogaster / embryology*
  • Drosophila melanogaster / genetics
  • Embryonic Development / physiology*
  • Models, Biological*
  • Ontario
  • Phenotype*