作　　者： ; ; (等）;

机构地区： 华南师范大学生命科学学院

出　　处： 《中国水产科学》 2002年第4期296-299,W003,W004,共6页

摘　　要： 以透射电镜观察 4月龄、体长 12～ 16cm、体重 16～ 2 5 g的苏氏鲶 (Pangasiussutchi)的肝脏组织。结果表明 ,苏氏鲶肝细胞存在双态现象。根据胞质内电子密度不同 ,鲶肝细胞可以区分“淡”细胞和“暗”细胞 2种类型 ,越冬前“淡”细胞占优势 ,越冬后“暗”细胞数量增加。鲶肝细胞与周边细胞之间存在有 3种不同的联系状态 :①相邻肝细胞间以桥粒结构连接 ;②与血窦的间接连接 ;③与胆小管邻接 ,显示了肝脏具有内分泌腺和外分泌腺功能的特点。本文还比较了越冬前后肝细胞中细胞器和内含物种类和数量变化特点及生物学意义 。 Transmission electron microscopy was used to observe the liver of Pangsius sutchi. The fish were from the artificial reproduction population and the initial age was 4 months. The experiment was conducted from October 1998 to January 1999. According to the electron density in hepatic cytoplasm, the hepatic cells can be divided into two types-'light cell' and 'dark cell'. The former dominated the hepatic cells in number before winter (November) and the later increased obviously in number after winter (January). The hepatic cells in liver have three types of conjunctions: to contact each other by desmosomes; to contact the sinusoid through the Disse' space; to contact the bile canaliculus with microvilli, indicating the ultrastructural characteristics as endocrine gland and exocrine gland. The general ultrastructural morphlolgy of the liver of P. sutchi during winter is discussed herein, as well as the rough endoplasmic reticulum, lipid and glycogen content of hepatocytes, and the dimorphism of hepatocytes of teleosts.

关 键 词： 苏氏 鲶 肝脏 超微结构 温度

领　　域： [农业科学] [农业科学]