Aspects of reproduction, ovulation, and the estrous cycle in African four-striped grass mice (Rhabdomys pumilio)

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Abstract
African 4-striped grass mice are a diurnal-crepuscular species of muroid rodent with great potential for laboratory research. Under laboratory conditions they display an estrous cycle somewhat longer than that of most muroid rodents - with a median duration of 7.4 days and a median of 2.9 days in vaginal estrus. Although copulation was relatively rare in tests during natural estrous cycles, it was most likely during proestrus. The mean gestation period was 26.4 days. Ovulation is spontaneous and ova were found in the Fallopian tubes of 2 females on day 2 of estrus.