作 者：
许宝红;王亚楠;肖调义;钟蕾;文祝友;刘巧林;胡毅
关键词：
黄尾密鲴;翘嘴红鲌;白鲢;黄鳝;消化系统
摘 要：
鱼类消化系统的组织结构特点与食性密切相关,为了给开发不同食性淡水鱼的饲料做基础研究,以黄尾密鲴(Xenocypris davidi Bleeker)、白鲢(Hypophthalmichthys molitrix)、翘嘴红鲌(Erythroculter ilishaeform is Bleeker)、黄鳝(Monopterus albus)为研究对象,采用H.E染色法比较研究了其消化系统的组织结构特点。从比肠长、杯状细胞密度、黏膜肌层总厚度、黏膜皱褶数量和高度、肝胰脏结构等方面比较了其组织结构特征,探讨了组织结构特点与食性、环境的适应性之间的相关性。结果表明,黄尾密鲴和白鲢的比肠长在4种鱼类中最大,在设计黄尾密鲴和白鲢的饲料配方时应注重粗纤维的含量以增强适口性;消化道组织学结果表明,白鲢、翘嘴红鲌和黄鳝3种鱼的口咽腔上皮细胞中都不同程度发排列有杯状细胞,而黄尾密鲴则无,但黄尾密鲴的口咽腔的最厚,白鲢的鰓耙最发达,食道的输送食物的能力和肠的消化吸收能力由黄尾密鲴、白鲢、翘嘴红鲌、黄鳝依次减弱,消化腺的进化是伴随物种进化而进行的有一些进化和演化方面的特征,是按照黄尾密鲴、白鲢、翘嘴红鲌到黄鳝的方向进化。这些组织学特征都是适应鱼类食性与环境的结果,在设计饲料配方时需考虑鱼类的食性特点与生活环境。
译 名：
The Comparative Histology Studies on Digestive System of Four Species of Economic Freshwater Fishes
作 者：
Xu Baohong,Wang Ya'nan,Xiao Tiaoyi,Zhong Lei,Wen Zhuyou,Liu Qiaolin,Hu Yi (College of Animal Science and Technology,Hunan Agricultural University,Changsha 410128)
关键词：
Xenocypris davidi Bleeker;Erythroculter ilishaeformis Bleeker;Hypophthalmichthys molitrix;Monopterus albus;digestive system
摘 要：
Organization structure characteristics of digestive system and feeding are closely related,for basic research in different appetites freshwater fish feed,four freshwater fishes,like Xenocypris davidi Bleeker,Hypophthalmichthys molitrix,Erythroculter ilishaeformis Bleeker and Monopterus albus,were studied.The histology of the digestive system in the four species fishes were studied by optical microscopes and H.E dyeability.The organizational structure characteristics had been compared,including ratio of intestine gut length to body length,density of goblet cell,mucosal muscularis aggregate thickness,mucosal ruffle quantity and length,liver and pancreas,and so on.In this study,the relationship among the feeding,environment,evolution and the morphological characteristics of digestive system histology with the four species were discussed.The results showed that ratio of intestine gut length to body length was the longest in Xenocypris davidi Bleeker and Hypophth almichthys molitrix.Goblet cells were distributed in buccopharyngeal cavity epithelial cells of Erythroculter ilishaeformis Bleeker,Hypophthalmichthys molitrix and Monopterus albus,but not in buccopharyngeal cavity epithelial cells of Xenocypris davidi Bleeker.Buccopharyngeal cavity muscle layer was more thicker in Xenocypris davidi Bleeker than in other three fish,and the gills was the densest in Hypophthalmichthys molitrix.The ability of conveying food of esophageal and Intestinal digestion absorption ability becoming more and more little from Xenocypris davidi Bleeker,Hypophthalmichthys molitrix,Erythroculter ilishaeformis Bleeker to Monopterus albus.Digestive gland evolution was with the evolution of species direction as from Xenocypris davidi Bleeker,Hypophthalmichthys molitrix,Erythroculter ilishaeformis Bleeker to Monopterus albus.Then concluded that histologic features were adapt to predatory of fish and living environment,we should fully considered histologic features and living environment in feed formula design.
