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采用常规石蜡组织切片的方法对野生和养殖黄鳍鲷(Sparus latus)消化道的形态组织结构进行了比较观察。结果表明,野生和养殖黄鳍鲷的消化道存在一定差异。(1)形态学研究表明,食道粗而短,胃呈V形,分为贲门部、胃体部和幽门部,胃与肠的连接处有4条幽门盲囊,肠道在体腔内迂回两个回折。野生黄鳍鲷牙齿更为坚硬锋利,体腔中脂肪较少,消化道更为粗短。野生和养殖黄鳍鲷的肠道系数分别为0.71±0.03和0.94±0.12。(2)组织学研究表明,食道黏膜上皮由扁平细胞层和杯状细胞层组成,杯状细胞发达。胃黏膜由单层柱状上皮组成,无杯状细胞,贲门部和胃体部胃腺发达。幽门盲囊组织学特征与肠相似,上皮为柱状上皮,其中的杯状细胞少于肠。肠中,前肠杯状细胞最多,中肠次之,后肠最少。直肠杯状细胞多于肠。野生与养殖黄鳍鲷组织学的区别在于,消化道相同部位养殖鱼的杯状细胞多于野生鱼,野生鱼的肌层厚度大于养殖鱼。黄鳍鲷消化道的形态组织结构与其生活环境和食物是相关的。
The morphology and structure of the digestive tract of wild and cultured Sparus latus were compared using conventional paraffin sections. The results showed that there were some differences in the digestive tract of wild and cultured yellowfin. (1) Morphological studies show that the esophagus is thick and short, the stomach is V-shaped, which is divided into cardia, body and pylorus. There are 4 pyloric sacs at the junction of stomach and intestine. A return. Wild Yellowfin sea bite teeth more hard and sharp, less fat in the body cavity, the digestive tract is more stubby. Intestinal coefficients of wild and cultured yellowfin blue snapper were 0.71 ± 0.03 and 0.94 ± 0.12, respectively. (2) histological studies have shown that the esophageal mucosa epithelium by the flat cell layer and goblet cell layer, goblet cells developed. Gastric mucosa consists of a single columnar epithelium, no goblet cells, gastric cardia and gastric body developed gastric glands. Pylorus blind capsule histological features similar to the gut, epithelial columnar epithelium, of which goblet cells less than the intestine. Intestinal, anterior goblet cells most, followed by the midgut, hindgut at least. Rectum goblet cells more than the intestine. The difference between the histology of wild and cultured yellowfin bream is that goblet cells cultured in the same part of the digestive tract have more goblet cells than the wild fish, and the thickness of the muscle layer in wild fish is greater than that of farmed fish. The morphological structure of the digestive tract of the yellowfin sea bream is related to its living environment and food.