摘要
利用连续石蜡切片方法对军曹鱼(Rachycentron canadum)消化系统胚后发育(1～29日龄)进行了光镜观察。结果表明,食道前部内侧纵行肌纤维发达,后部球形粘液细胞更丰富;胃腺的分化较晚,在仔鱼后期(出膜后8d)才见胃腺细胞团。胃幽门部无胃腺,但具发达的肌层。肠上皮的纹状缘出现较早,1日龄时就可见,而且发育较快,3日龄时很发达。肠后段黏液细胞明显多于前段和中段。肝脏发育较早,但16日龄仔鱼才开始贮存脂质。胰腺为弥散型,2日龄出现。军曹鱼这些结构特点的变化是与其摄食、消化、吸收的功能相适应的;其摄食方式以及食性也随着消化系统的发育而变化。
A serial paraffin slice method was used to observe the digestive system in Rachycentron canadum during its post-embryonic development(1 to 29 days) with optic microscope.The anterior oesophagus had developed longitudinal muscle fiber,the posterior oesophagus had more mucous cells.The first differentiation of gastric glands had occurred at 8 days after hatching.Although the pyloric part(or pylorus) of the stomach was devoid of gastric glands,it had the thickest muscularis.The striated border could be detecte...
出处
《水生态学杂志》
北大核心
2010年第4期86-91,共6页
Journal of Hydroecology
基金
“863”计划项目(编号:2002AA603012、2005AA603020)
广东省科技厅重大项目(编号:2003A2010502、2005A20105002)
国家支撑计划(编号:2007BAD29B01)
关键词
军曹鱼
消化系统
胚后发育
组织学
Rachycentron canadum
Digestive system
Postembryonic development
Histology
