关键词: 内分泌细胞, 胃肠道, 中华竹鼠, 取食行为

Abstract: Somatostatin，gastrin，cholecystokinin，neurotensin ，motilin ，gastric inhibitory polypeptide，glucagon，vasoactive intestinal peptide， endorphin and 5-hydroxytryrptamine immunoreactive cells in the mucosae of 15 segments of the gastrointestinal tract of each of the 5 Chinese bamboo rats(Rhizomys sinensis) were studied in order to delineate their adaptation to the special feeding behavior. 7 kinds of endocrine cells were found except motilin，vasoactive intestinal peptide and endorphin immunoreactive cells. The distribution of these cells was compared with that of the giant panda. Although both the bamboo rat and the giant panda live on bamboos，yet the kind and distribution
of endocrine cells in their gastrointestinal mucosa are different because of the differences in feeding behavior，j．e．the bamboo rat grinds its food into dust while the giant panda does not．These data indicate that the distribution of gastrointestinal endocrine cells related not only to the composition of what the animals live on but aslo to how the animals
process their feed before swallowing down.

Key words: Endocrine cells, Gastrointestinal tract, Chinese bamboo rat( Rhizomys sinensis), Feeding behavior