云南光唇鱼消化系统形态结构的初步观察  

Morphological and histological observation on digestive system of Acrossocheilus yunnanensis

作　　者：史晋绒[1] 王晓娣 周龙 王永明[1] SHI Jinrong;WANG Xiaodi;ZHOU Long;WANG Yongming(School of Life Sciences,Neijiang Normal University,Neijiang,Sichuan 641100,China)

机构地区：[1]内江师范学院生命科学学院,四川内江641100

出　　处：《内江师范学院学报》2024年第12期46-51,共6页Journal of Neijiang Normal University

基　　金：内江师范学院科研项目(2021YB18);内江师范学院创新团队项目(2021TD03)。

摘　　要：采用形态解剖及石蜡切片技术对云南光唇鱼(Acrossocheilus yunnanensis)消化系统形态学和组织学结构进行观察.结果显示:云南光唇鱼消化系统分为消化道和消化腺两部分.消化道由口咽腔、食管、肠和肛门组成,肠道系数1.52±0.39.其中,口咽腔和食管黏膜上皮为复层扁平上皮,内含杯状细胞;食管肌层发达,由骨骼肌组成.肠道分为前肠、中肠和后肠三部分.肠道由前向后黏膜褶皱数量依次减少,黏膜褶皱高度、柱状细胞高度、黏膜下层厚度、环肌层厚度逐渐降低,杯状细胞数量及纵肌层厚度先减小后增大.消化腺包含肝脏和胰脏,肝脏分为两叶,胰脏分布在肠系膜上,胆囊呈椭圆形,体积较大.The morphological and histological structure of the digestive system of A.yunnanensis were observed by morphological dissection and paraffin sectioning techniques.The digestive system of A.yunnanensis is divided into two parts:the digestive tract and the digestive gland.The digestive tract consisted of the oropharyngeal cavity,esophagus,intestine and anus,with an intestinal coefficient of 1.52±0.39.The mucosal epithelium of the oropharyngeal cavity and esophagus is a compound flat epithelium and contained goblet cells.The esophageal muscle layer is well developed and consists of skeletal muscle.The intestine is divided into three parts:anterior intestine,middle intestine and posterior intestine.From anterior intestine to posterior intestine,the mucosal folds numbers,mucosal folds height,columnar epithelial cells height,submucous layer and cyclic muscle layer thickness of A.yunnanensis are decreased successively.Meanwhile,the thickness of the longitudinal muscular layer and the number of goblet cells are first increased and then decreased.The digestive gland is divided into the liver and pancreas.The liver is divided into two lobess,the pancreas is mainly distributed in the mesentery,and the gallbladder was oval in shape and larger in size.It suggested that the histological characteristics of the digestive system of the A.yunnanensis were compatible with its food habits,and it was an omnivorous and carnivorous fish.

关 键 词：云南光唇鱼 消化系统 解剖学 组织学 食性 

分 类 号：S917.4[农业科学—水产科学]