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用石蜡切片方法观察和分析饥饿和再投喂对美国红鱼(Sciaenopsocellatus)消化器官形态结构和组织学的影响。鱼样体重(8.25±0.5)g,体长(8.84±0.27)cm。从形态结构看,饥饿与再投喂前后食道无明显变化,而饥饿10、15d的实验鱼胃壁变薄,幽门盲囊变小,肠管收缩,呈透明状,肝胰腺萎缩,呈姜黄色,胆管呈深绿色。从组织结构看,食道无明显变化;饥饿时间不同,各组织受损害和恢复程度不同。饥饿5d的实验鱼基本同对照组;而饥饿10、15d的实验鱼组织变化较明显:皱襞和上皮细胞高度均减少,分泌颗粒减少。胃腺细胞收缩,结构不完整;幽门盲囊长度和直径变小;肠直径变小,微绒毛退化;肝组织致密,肝细胞内脂滴减少,体积缩小;胰腺泡缩小,排列不规则。再投喂各主要结构均有所恢复,有些恢复到饥饿前水平,但大部分未能达到。
The effects of starvation and refeeding on the morphology and histology of digestive organs of American redfish (Sciaenopsocellatus) were observed and analyzed by paraffin section method. Fish-like body weight (8.25 ± 0.5) g, body length (8.84 ± 0.27) cm. From the morphological structure, there was no significant change in the esophagus before and after starvation and refeeding. However, the starved stomach thinned on day 10 and day 15, the pyloric capsule became smaller, the intestine contracted and appeared transparent, and the hepatopancreas atrophied with turmeric and bile duct Dark green. From the organizational structure, no significant changes in the esophagus; hunger time is different, the extent of damage and recovery of different organizations. Fish 5d experimental fish basic with the control group; and hunger 10,15d experimental fish tissue changes were more obvious: the height of folds and epithelial cells were reduced, reduced secretion of particles. Gastric gland cells shrink, the structure is not complete; pyloric blind capsule length and diameter becomes smaller; intestinal diameter smaller, degeneration of microvilli; liver tissue dense, lipid droplets within the liver cells reduce the volume; pancreatic contraction of the small, irregular arrangement. The re-feeding of the major structures have all recovered, with some returning to pre-hunger levels, but most fail to meet them.