Ambient ultraviolet radiation causes mortality in salamander eggs

  • Blaustein A
  • Edmond B
  • Kiesecker J
 et al. 
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Abstract

Previous research has shown that amphibian species have differential sensitivity to ultraviolet-B (UV-B) radiation. In some anuran species, ambient levels of UV-B cause mortality in embryonic stages and hatching success is significantly reduced. Projected increases in UV-B may affect an increasing number of species. The adverse effects of UV-B may eventually be manifested at the population level and may ultimately contribute to population declines. Using field experiments, we investigated the effects of ambient UV-B on salamander (Ambystoma gracile) embryos developing at natural oviposition sites. We show that the hatching success of eggs of A. gracile shielded from UV-B is significantly higher than those not shielded from UV-B.

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Authors

  • A. R. Blaustein

  • B. Edmond

  • J. M. Kiesecker

  • J. J. Beatty

  • D. G. Hokit

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