Post-embryonic histological development in digestive system of large yellow croaker Pseudosciaena crocea
XU Xiao-jin,WANG Jun ,XIE Yang-jie,SU Yong-quan
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
Abstract: 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.
徐晓津, 王军, 谢仰杰, 苏永全. 大黄鱼消化系统胚后发育的组织学研究[J]. 大连海洋大学学报, 2010, 25(2): 107-112.
XU Xiao-jin, WANG Jun , XIE Yang-jie, SU Yong-quan. Post-embryonic histological development in digestive system of large yellow croaker Pseudosciaena crocea. Journal of Dalian Ocean University, 2010, 25(2): 107-112.
2010, Vol. 25 
