Ontogeny of digestive system during early development stage of barfin flounder
条斑星鲽消化系统个体发生的组织学观察

A histological examination was made on the ontogenetic development of digestive tract from hatching to day 60 in barfin flounder.After hatching,the digestive tract is a simple undifferentiated tube,closed in mouth and anus.On the day 7,the digestive tract differentiated into four parts: buccopharyngeal cavity,oesophagus,intestine and rectum.The liver and pancreas also became apparent at this age.Between day 7 and day 14 or 17,according to the mixing nutrition period,the vacuoles in the midgut and eosinophil...