文章摘要
骆豫江,陈昆慈,朱新平,潘德博,常藕琴,李凯彬.高体革鯻消化道发生的组织学观察[J].水产学报,2010,34(2):264~270
高体革鯻消化道发生的组织学观察
Histological studies on development of the digestive system of Scortum barcoo
投稿时间:2009-06-16  修订日期:2009-12-02
DOI:10.3724/SP.J.1231.2010.06499
中文关键词: 高体革鯻  消化系统  器官发生
英文关键词: Scortum barcoo  digestive system  organogenesis
基金项目:科技基础条件平台资助(2006DKA30470-008)
作者单位E-mail
骆豫江 中国水产科学院珠江水产研究所 luoyujaaa@163.com 
陈昆慈 中国水产科学院珠江水产研究所 chenkunci@yahoo.com.cn 
朱新平 中国水产科学院珠江水产研究所  
潘德博 中国水产科学院珠江水产研究所  
常藕琴 中国水产科学院珠江水产研究所  
李凯彬 中国水产科学院珠江水产研究所  
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中文摘要:
      利用形态学和连续组织切片技术,对出膜后1~30 d的高体革鯻消化系统胚后发育的组织形态学进行了系统观察和研究。结果表明,培养水温在26.6~29.7 ℃条件下,高体革鯻初孵仔鱼消化管为一柱形盲管,管腔狭窄,口、肛门尚未与外界接通。出膜30 h仔鱼,口开始张开,消化管相通。出膜2 d仔鱼肠壁出现皱褶,肠瓣将肠道分为前肠和后肠,在显微镜下可见消化管蠕动。出膜3 d仔鱼可以开口摄食,消化管上皮分化,食管中出现黏液细胞,肝脏和胰脏出现,鱼体由内源性营养转入混合营养阶段。混合营养阶段仔鱼消化道明显分为口咽腔、食道、胃、前肠、直肠等,消化腺肝脏和胰脏也已形成,各部分已经有初步结构和一定的消化吸收能力。随着仔鱼的发育,仔鱼消化系统各器官也趋于完善。出膜21 d稚鱼的胃壁出现胃腺,标志着稚鱼期开始。
英文摘要:
      Histological changes of the digestive system and its associated glands were studied in jade perch, Scortum barcoo from the first day(first day post hatch, dph) to 30 dph. Specimens for this study were hatched from artificially spawned broodstock and maintained in the indoor plastic tanks(26.6-29.7 ℃). The newly hatched larvae had one big yolk sac, and their digestive tract was only a columniform diverticulum, without communication with outside. Digestive tract communication with outside in 30 hour old larva and their mouth shut up. 2 day old larvae’s gut started crumple and peristalsis. The intestinal had been divided into anterior intestine and posterior intestine by intestinal valve. 3 day old larvae could be fed, the epithelial of digestive tract begun differentiation, mucous cells appeared in esophageal, pancreas and liver appeared. The nutrition of fish began transferred to the stage of mixed nutrition. In this stage, the digestive tract was differentiated into five portions: buccal pharyngeal cavity, esophagus, stomach, anterior intestine and posterior intestine, liver and pancreas had also been formed; these organs already had initial structure and the capacity of digestion and absorption. Along with the development of larvae fish, digestive system tended to perfect. Gastric glands appeared in the stomach of 21 day old juvenile, marking the beginning of juvenile.
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