Dental Evolution of the Meadow Vole in Mainland, Peninsular, and Insular Environments in Southern New England

Accordingly, the objectives of this study were: 1) to compare the extent of variability (both quantitative and qualitative) in the dentitions of populations of Microtus inhabiting mainland, penisular, and insular environments; 2) to identify some of the selective forces that affect mainland and maritime populations of Microtus; 3) to examine Guthrie's hypothesis regarding the relationship between intensity of selection and variation.