Морфофункциональная характеристика органов размножения млекопитающих степей зоны Южного Урала на этапах сезонной динамики репродуктивной активности

The paper is devoted to the study of male reproductive system in rodents (small and red-haired souslics, field mouse and field-vole) and hoof animals (Orenburg goat) inhabiting the steppe regions of the South Urals at the stages of circannual reproduction rhythm. Certain peculiarities of structural reformations in the organs of male reproductive system under the conditions of seasonal changes in their reproductive activity have been revealed.