Comparative Analysis of Coat Color Morphs in a Polymorphic Population of the Northern Mole Vole

Long-term stationary observations (1985–2000) on a polymorphic population of the northern mole vole (Ellobius talpinus Pall.) in Kurgan oblast were performed using the mark-recapture method. Original data were obtained on the abundance and structure of this population, which comprised individuals of three color morphs: black, brown, and intermediate (bicolor). Each morph proved to have its specific features with respect to abundance, age and sex composition, migration, birthrate, mortality, and life span. In general, this polymorphism contributes to population heterogeneity and the maintenance of population homeostasis.