丁肠道及肝胰脏组织学研究

Histological Study on Digestive System of Tinca tinca Linnaeus

以体长4～6cm的丁幼鱼作为试材,用解剖、石蜡切片和显微摄像等组织学研究手段,对其肠道及肝胰脏组织结构进行了观察。比较了前、中、后肠粘膜皱褶的多少、疏密、高低以及杯状细胞的数量变化,说明肠道各段在消化过程中的不同作用;肝胰脏的组织学结构特点与鲤鱼相似,但胰腺细胞大部分都聚集在肝脏外部边缘和肠道的周围,只有一小部分弥散在肝脏之内,胰腺细胞间有较多胰岛。

The histological structure of digestive system in Tinca tinca juvenils with 4～6 cm in body length was studied by microtomy and microscopic technique. Structural comparison of foregut, midgut, and hindgut indicated that each section took different functions in digestive process; the structures and characteristics of the hepatopancreas were compared to those in common carp. The results show that Tinca tinca has dispersed hepatopancreas, similar to common carp, but had the pancreas cells mostly gathered at the liver exterior edge.