Age, sex and chronological variability of morphophysiological indicators in the development of the intestines of the bank vole ( Myodes glareolus)

Age, sex, seasonal and annual peculiarities of the intestines’ proportions of the Bank Vole, belonging to the single micropopulation of Tver region, are analyzed. Age and seasonal differences are probably due to peculiarities of food. Sex dimorphism in the intestines’ proportions of mature animals is related to physiological changes in the body of breeding females.