树鼩在饲养笼中认知能力的评价试验

An evaluation test for the cognitive abilities of tree shrews in the home cage

为了获得树鼩认知能力评估的适宜方法，通过基于洞板的食物搜寻试验，观察雄性成年树鼩对诱饵的错误选择和重复选择。结果表明：树鼩找出全部诱饵的时间均逐渐缩短，自第2天（视觉空间任务）和第4天（空间任务）起，完成任务的时间进入相对稳定期（P〉0．05）。在视觉线索有或无的情况下，树鼩错误选择次数均在第3—5天达到相对稳定（P〉0．05），说明树鼩的空间参考记忆相对稳定。在视觉空间试验中，树鼩重复选择在第2～4天达到相对稳定（P〉0．05），第5天相对显著降低；在没有视觉线索空间试验中，树鼩重复选择在第4～5天达到相对稳定（P〉0．05），提示树鼩空间工作记忆相对波动频率较大。

To obtain a suitable method for an evaluation of the cognitive abilities of tree shrews （ Tupaia belangeri）, the wrong choices and re- peated choices of male adult tree shrews for baits were observed through the food searching test based on holeboard. The result showed that the time that the animals found out all the baits gradually shortened. The time to complete the task entered a relatively stable period （ P 〉 0.05 ） since the 2nd d （ visual spatial task） and the 4th d （ space task）. The number of wrong choices of tree shrews reached relative stability （ P 〉 0.05 ） between 3 d and 5 d with or without visual cues, it showed that the spatial reference memory of tree shrews was relatively stable. In the visual space experiments, the repeated choices of tree shrews reached relative stability（ P 〉 0.05 ） between 2 d and 4 d, and then were relatively significantly decreased at 5 d. The repeated choices of tree shrews reached relative stability （ P 〉 0.05 ） between 4 d and 5 d in the space experi- ments without visual cues, it was suggested that spatial working memory of tree shrews had greater relative volatile frequency.