The samples of Siniperca kneri and Siniperca scherzeri were collected from the Jaling River from Match to June 2010. The digestive systems of S. kneri and S. scherzeri were studied and compared by dissection and histology with HE dyeing. The results indicated that the digestive tract of two fish consisted of mucosa, submucosa, muscular coat and sero-sa. Esophagus mucosal epithelium mainly consisted of stratified squamous epithelium, simple columnar epithelium and a small amount of goblet cells. The digestive system was better developed in S. kneri than in S. scherzeri. Histological observations showed that thickness of submucosa, muscular layers and goblet cell in esophagus, submucosa of stomach, thickness of villus of pyloric caeca were betler developed in S. kneri. than in S. scherzeri The general rule of the change of digestive tract of these two fishes was that the thickness of the mucosa, submuosa increased gradually from esophagus to stomach, while decreased from stomach to foregut. The density of goblet cell in the front, middle and post section of gut, as well as the size and development of goblet cell in the intestinal villus epithelium of 5. kneri were larger than those of S. scherzeri. Meanwhile, because the intestinal structure of .S. kneri was better developed than S. scherzeri, S. kneri had better physical digestion than S. scherzeri. Furthermore, the study provided a theoretical basis for protection and breeding of S. kneri and S. scherzeri.%大眼鳜(Siniperca kneri)和斑鳜(Siniperca scherzeri)的标本于2010年3-6月采集于嘉陵江合川段,用组织学方法和H.E染技术比较研究了大眼鳜和斑鳜消化道的组织结构.结果表明:消化道由黏膜、黏膜下层、肌层和浆膜组织所构成,食道上皮主要为复层扁平上皮、单层柱状上皮和少量杯状细胞组成.大眼鳜的消化道较斑鳜的发达,如食道的黏膜下层及杯状细胞、胃黏膜下层的厚度、幽门盲囊绒毛密集程度.两种鱼消化道变化的基本规律为从食道到胃黏膜层和黏膜下层逐渐增厚,从胃到前肠厚度减少.大眼鳜肠前段、中段和后段的杯状细胞密度、肠绒毛上皮的杯状细胞的大小及形态的发达程度都大于斑鳜.同时由于大眼鳜的肠道形态结构较斑鳜发达,以至在物理消化上也较斑鳜强.该研究为大眼鳜和斑鳜的保护和养殖提供一定的理论依据.
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