| Popis: |
A variant of Taricha granulosa, identifiable by dark blotching on the dorsum, is known from 13 lakes in the Siskiyou Mountains of northwestern California. The percentage of blotched individuals in these populations varies from 5 to 85. Preliminary evidence suggests that populations of this Siskiyou variant are being invaded by normally pigmented Taricha granulosa from the surrounding lowlands, and that current tempo/ ral and spatial isolating mechanisms are insufficient to maintain natural variation. The taxonomic status of this newt requires additional investigation. |
