关键词: 棕色田鼠, 昆明小鼠, 光强, 活动性, 体重

Abstract: Light exerts an important influence on activity patterns of nocturnal and diurnal mammals． Under laboratory conditions and exposed to four levels of light intensity，＜ 20 Lux，200 Lux，800 Lux，and 1 600 Lux，variations in body mass and behavior of Mandarin vole ( Lasiopodomys mandarinus) and KM mouse ( Mus musculus) were investigated via employing focal animal sampling auto-video system for 24 hr． Under a light intensity of 800 Lux，behavior of experimental animals were recorded for 12 hr with different light durations ( 12L∶ 12D and 0L∶ 24D) ． The data were analyzed by using twoway ANOVA in SPSS for Windows ( version 13. 0) ． The results showed that: 1) the interaction between light intensity and species was remarkable，the resting behavior was significantly and negatively related to light intensity in Mandarin voles，
while this behavior was not significantly affected by light intensity in KM mice; 2) behavioral patterns of movement were to the reverse of resting behavior mentioned above both in Mandarin voles and KM mice; 3) under high light conditions，the
relative activity in Mandarin voles was significantly greater than that in KM mice; and 4) light intensity differentially influenced body masses of the two rodent species: body mass was positively related to light intensity in Mandarin voles，whereas body mass in KM mice appeared not to be remarkably affected by light intensity． This research tested different light adaptations between subterranean and ground inhabiting rodent species． Light would enhance activities for subterranean rodents， and appeared to change activity pattern unobvious．