关键词: 发头裸腹溞, 种群密度, 培养体积, 性比

Abstract: Spatial pattern is one of the most important ecological properties of species,Unlike studies of birds and insects,the studies on spatial patterns of rodents have not been well documented in the past.This paper showed that the studies on spatial pattern of rodents was developed from qualitative to quantitative.They were in close relationship with home range,behaviour and reproduction.There were differences between males and females,and between juveniles and adults.Some species revealed seasonal changes of spatial patterns,some not.The analytical and statistical methods for spatial patterns were also listed in accordance with specific conditions.

Key words: Moina irrasa, culture density, culture volume, sex ratio.