Systematic Implications of Geographic Patterns of Genetic Variation in the Genus Dicamptodon
Daugherty CH, Allendorf FW, Dunlap WW, Knudsen KL. 1983. Systematic Implications of Geographic Patterns of Genetic Variation in the Genus Dicamptodon. Copeia. 1983(3):679-691
We describe protein variation in 34 genetic loci among 23 populations of the salamander genus Dicamptodon. Four major genetic groups emerge, congruent with the four morphological groups detected by Nussbaum (1976). The genetic data confirm the specific identity of D. copei. However, the recognition of Idaho populations as D. aterrimus is warranted on the basis of equivalently great genetic divergence from Coastal-Cascade D. ensatus and D. copei. The lineage divergence time of this major phylogenetic event is estimated at 7.5 MYBP, in contrast to estimates placing it in the late Pleistocene.
- Type
- Journal Article
- Authors
- Daugherty, Charles; Allendorf, Fred; Dunlap, William; Knudsen, Kathy
- Units
- OLYM
- Keywords
- Dicamptodoon, Genetic Variation, Salamander, Systematics