Pine and Montane Vole Age Estimates from Eye Lens Weights
Gourley RS and Jannett FJ. 1975. Pine and Montane Vole Age Estimates from Eye Lens Weights. The Journal of Wildlife Management. 39(3):550-556
Lens weights were a satisfactory basis for estimating ages of 124 pine voles (Microtus pinetorum) and 517 montane voles (M. montanus) of known age. Other body and cranial measurements were of little added value for estimating ages when considered over a full two-year age range. Analyses of covariance showed no differences attributable to sex, season of birth, or laboratory generation in the lens weight--age regressions. Montane voles from small (1-4), medium (5-6), and large (7-10) litters had significantly different regressions, although pine voles from small (1-2) vs. large (3-4) litters did not differ.
- Type
- Journal Article
- Authors
- Gourley, Robert; Jannett, Fred
- Units
- GRTE
- Keywords
- Age Distribution, Animal Studies, Jackson Hole WY, Montane Vole (Microtus montanus), pine vole (Pitymys pinetorum)