シマリスにおける種子の貯蔵行動

概要

論文の詳細を見る
The Asiatic chipmunk Tamias sibiricus asiaticus exhibits a stereotyped seed hoarding behavior consisting of three movements which occur in sequence : it holds seeds in its cheek pouch (seed holding), scratches a hole at a favorite place by alternating motion of the forelimbs and sets the seeds in the hole (seed setting), and covers the seeds with dirt using a raking-like motion (seed covering). When the number of seeds held in the cheek pouch is greater, the duration of the subsequent scratching in the seed setting becomes longer, and the seed covering is lengthened independent of the depth of the hole. The experimental results suggest that each of the three movements has its own motivation and that at the transition phase from the seed holding to the seed setting, the following three factors appear to be related to the increase in the motivation of seed setting : (i) stimuli from the seeds in the cheek pouch, (ii) internal stimuli from the motion of seed holding, and (iii) the strength of the motivation of seed holding preceding the seed setting.
社団法人日本動物学会の論文
1980-09-25