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Red-legged Frog (Rana Aurora)

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COSEWIC
Assessment Summary

Assessment Summary – November 2004

Common name:

Red-legged Frog

Scientific name:
Rana Aurora

Status:
Special Concern

Reason for designation:
A large proportion of the known Canadian distribution of this species occurs in the densely populated southwestern part of British Columbia. Habitats are becoming increasingly lost and fragmented due to land conversions and other human activities. Introduced Bullfrog and Green Frog, which are spreading rapidly, have replaced this species at many sites and appear to adversely affect the use of wetland breeding sites and reproductive success. Populations of this species, and other amphibian species that require extensive habitat, are inherently vulnerable to habitat fragmentation which can be expected to exacerbate isolation effects and local extinctions.

Occurrence:
British Columbia

Status history:
Designated Special Concern in April 1999. Status re-examined and confirmed in May 2002 and in November 2004. Last assessment based on an update status report.