极北鲵消化道嗜银细胞的胚后发生  

Argyrophil Cells in Digestive Tract during the Postembryonic Development of Salamandrella keyserlingii

作　　者：陈霞[1] 任春宇[2] 李淑兰[2] 

机构地区：[1]哈尔滨师范大学体育科学学院,哈尔滨150025 [2]哈尔滨师范大学生命科学与技术学院,哈尔滨150025

出　　处：《动物学杂志》2014年第4期546-551,共6页Chinese Journal of Zoology

基　　金：黑龙江省自然科学基金面上项目(No.C201219)

摘　　要：为了探讨极北鲵(Salamandrella keyserlingii)消化道嗜银细胞胚后发生的形态学特征及分布规律,采用Grimelius银染法,对30～46期的极北鲵幼体进行了研究。结果显示,嗜银细胞在食管、胃、小肠各部分的发生时间不同。胃中的嗜银细胞在第41期出现,小肠中的在第42期出现,食管中的在第43期出现。嗜银细胞形态多样,有圆形、椭圆形、梭形和锥体形,大多分布在消化道黏膜上皮之间。根据嗜银细胞的形态判定其可能具有内分泌和外分泌两重功能。极北鲵胚后发育消化道各部位嗜银细胞出现顺序的不同可能与其消化生理活动及个体生理活动的变化相适应。In order to study the morphology and distribution of argyrophil cells in the digestive tract during the postembryonic development of Salamandrella keyserlingii,we stained the specimens collected from the 30 thto the 46 thstages of the development of baby S. keyserlingii by means of silver nitrate method of Grimelius. The result showed that argyrophil cells appeared at different time points in the esophagus,intestine and stomach.They appeared in the stomach at stage 41,in the intestine at stage 42,and in the esophagus as late as stage 43.They took on round,oval,spindle,and conical shapes,with their processes extending to nearby cells.According to the morphology of the argyrophil cells,it can be inferred that they have both endocrine and exocrine functions. The fact that argyrophil cells appear at different phases in different digestive tracts during the postembryonic development indicate that these cells be an adaptation to the changes in its digestive physiological activities and individual physiological activities.

关 键 词：极北鲵(Salamandrella keyserlingii) 消化道 胚后发生 嗜银细胞 

分 类 号：S917.4[农业科学—水产科学]