Adult male Syrian hamsters bred from birth in a 14L:10D photoperiod (long day) and then were placed in a 10L:14 D photoperiod (short day).
Adult male Syrian hamsters bred from birth in a 14L:10D photoperiod (long day) and then were placed in a 10L:14 D photoperiod (short day). The table below shows the treatment (which began immediately after being placed in the SD photoperiod)…