Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Journal of Dalian Fisheries University》 2010-02
Add to Favorite Get Latest Update

Post-embryonic histological development in digestive system of large yellow croaker Pseudosciaena crocea

XU Xiao-jin1,2,WANG Jun 2,XIE Yang-jie1,2,SU Yong-quan2 (1.Fisheries College,Jimei University,Key Laboratory of Science and Technology for Aquaculture and Food Safety,Xiamen 361021,China;2.Department of Oceanography,Institute of Subtropical Oceanography,Xiamen University,Xiamen 361005,China)  
The morphology and histology were described in post-embryonic development of digestive system of large yellow croaker Pseudosciaena crocea everyday from the 1st to 22th day after hatching(DAH),every other day from the 22th to 30th DAH,and every 5 days from the 30th to 60th DAH under light microscopy.The results showed that the liver organ appeared,and the anus was opened on the 2nd DAH at water temperature from 25.6 to 29.4 ℃.The pancreas,pyloric caeca and mouth were formed on the 3rd DAH.The mouth and anus opened on the 4th DAH,while the gallbladder occurred at the same time.Many mucous cells were present in the mucosal epithelium of the oesophagus.Stomach was different from the intestine in that at the posterior to the intestine,it had lamellas.There was a boundary between the intestine and rectum.The stomach and intestines were peristaltic.On the 5th DAH,the liver of the larvae were divided into 2 parts.Pancreatic tissue was present in areas surrounding the intestine;from the 12th to 13th DAH,the stomach were composed of 3 parts:cardiac,pyloric and caecum gastricum.The intestine walls seemed rugose.The stomach gland developed completely on the 36th DAH.There were 16 pyloric caecae,similar to the caecae in the adult.At hatching,the larvae had an enlarging digestive tract,thicker muscles,pronounced folding mucosa,and many mucous glands.On the 60th DAH,the digestive tract and gland were well developed,indicating the acquisition of an adult digestion mode.The three "critical changes" in ontogenetic morphology of digestive system in the cultured large yellow croaker were discussed as well.
【Fund】: 国家“863”计划项目(2006AA10A405);; 国家自然科学基金资助项目(40976096);; 福建省高校水产科学技术与食品安全重点实验室(集美大学)基金资助项目;; 集美大学博士启动基金资助项目
【CateGory Index】: S917.4
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved