Usage
  • 21 views
  • 46 downloads

Effect of melanism of alpine Colias nastes butterflies (Lepidoptera: Pieridae) on activity and predation

  • Author(s) / Creator(s)
  • Abstract: Melanism in the Sulphur butterfly Colias nastes Boisduval was quantified and related to their ability to remain active under cool or cloudy conditions and to their risk of predation. Darker individuals were more active, moved greater distances, and disappeared from the population at a greater rate. Disappearance of darker individuals was not due to greater predation. Light-coloured individuals suffered greater predation than dark individuals, but only at higher elevations. The broad geographical pattern of increased melanism in Arctic and alpine Colias butterflies is likely a response to the consistent pattern of cooler temperatures in these habitats rather than local variation in predation pressure.

  • Date created
    2006
  • Subjects / Keywords
  • Type of Item
    Article (Published)
  • DOI
    https://doi.org/10.7939/R3N873336
  • License
    © 2006 Cambridge University Press. This version of this article is open access and can be downloaded and shared. The original author(s) and source must be cited.
  • Language
  • Citation for previous publication
    • Roland, J. (2006). Effect of melanism of alpine Colias nastes butterflies (Lepidoptera: Pieridae) on activity and predation. Canadian Entomologist, 138(1), 52-58. DOI: http://dx.doi.org/10.4039/n05-805.