| tropical photoperiods affect reproductive development in the musk shrew, suncus murinus. | the purpose of the present studies was to determine whether reproductive development in male musk shrews (original stock from guam island, 13 degrees n latitude) could be altered by small, ecologically relevant changes in photoperiod. in the first experiment, effects of changes in photoperiod equivalent to those seen between the 2 solstices on guam island (90 min) on reproductive maturation were investigated. the results showed that a 90-min difference in photoperiod had a significant effect on ... | 1991 | 1801008 |