| classification of the spermatogenic cycle, seasonal changes of seminiferous tubule morphology and estimation of the breeding season of the large japanese field mouse (apodemus speciosus) in toyama and aomori prefectures, japan. | the large japanese field mouse, apodemus speciosus, is a potential indicator of environmental stress, but this function has not been confirmed by histological studies. since environmental stress affects the reproductive function of mice, we determined the reproductive characteristics of this species at two locations: toyama (36°35'n, 137°24'e) and aomori (40°35'n, 140°57'e). mice were captured during may-november (n=119) and july-november (n=146) at these locations, respectively. we classified t ... | 2015 | 25754934 |