 Like many other organisms , increasing ultraviolet @-@ B ( UVB ) radiation due to stratospheric ozone depletion and other factors may harm the DNA of amphibians , particularly their eggs . The amount of damage depends upon the life stage , the species type and other environmental parameters . Salamanders and frogs that produce less photolyase , an enzyme that counteracts DNA damage from UVB , are more susceptible to the effects of loss of the ozone layer . Exposure to ultraviolet radiation may not kill a particular species or life stage but may cause sublethal damage . 
