, Volume 130, Issue 4, pp 551–554

Exposure of red-legged frog embryos to ambient UV-B radiation in the field negatively affects larval growth and development

  • Lisa K. Belden
  • Andrew R. Blaustein
Population Ecology

DOI: 10.1007/s00442-001-0843-y

Cite this article as:
Belden, L.K. & Blaustein, A.R. Oecologia (2002) 130: 551. doi:10.1007/s00442-001-0843-y


Exposure to ultraviolet-B radiation (UV-B; 280–320 nm) has a wide array of effects on aquatic organisms, including amphibians, and has been implicated as a possible factor contributing to global declines and range reductions in amphibian populations. Both lethal and sublethal effects of UV-B exposure have been documented for many amphibian species at various life-history stages. Some species, such as red legged frogs, Rana aurora, appear to be resistant to current ambient levels of UV-B, at least at the embryonic and larval stages, despite the fact that they have experienced range reductions in the Willamette Valley of Oregon, USA. However, UV-B is lethal to embryonic and larval R. aurora at levels slightly above those currently experienced during development. Therefore, we predicted that exposure of embryos to ambient UV-B radiation would result in sublethal effects on larval growth and development. We tested this by exposing R. aurora embryos to ambient UV-B in the field and then raising individuals in the laboratory for 1 month after hatching. Larvae that were exposed to UV-B as embryos were smaller and less developed than the non-exposed individuals 1 month post-hatching. These types of sublethal effects of UV-B exposure indicate that current levels of UV-B could already be influencing amphibian development.

Amphibians Rana aurora Sublethal effects Ultraviolet radiation UV-B

Copyright information

© Springer-Verlag 2001

Authors and Affiliations

  • Lisa K. Belden
    • 1
  • Andrew R. Blaustein
    • 1
  1. 1.Department of Zoology, 3029 Cordley Hall, Oregon State University, Corvallis, OR 97331, USA