关键词: 布氏田鼠, 嗅觉通讯, 光照周期：个体辨别, 尿液气味, 粪便气味

Abstract: Uriue and feces from different photoperiods were used as two odor stimuli to adult Bradt's vole in a 10 minute odor discrimination experiment. Both of LD and SD voles preferred the urinary and fecal scents of long-photoperiod donors. All ofactors preferred scents of opposite-sex conspecifics to these of same-sex donors. There was nosignificant difference between the urinary odor preferences of LD and SDmales,while LD male showed more sniffing frequency than SD male on unfamiliar female fecalscent. There werealso no significant differences between LD and SD female actors on sniffing urine and feces of novel donors. Male presentedmore sniffing on the urine than the feces of male and female donors. LD femalespreferredtheurinary scents to fecal scents of opposite-sexdonors,but the data didnot showsiginificant diference inthis experiment, while female actors spent significantlymore time on sniffing urinary odor than sniffing fecal odor of other females. Theresults indicated that scents of urine and feces mediated the informationof seasonal change and sex-specific characters; urine had more attractiveness than feces to both opposite or same sex actor.

Key words: Brandt's vole (Microtus brandti), Olfactory communication, Photoperiod, Individual discrimination, Urinary odor, Fetal 0dor