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中国农学通报

中国农学通报 ›› 2011, Vol. 27 ›› Issue (14): 50-54.

所属专题： 生物技术； 水产渔业

• 水产 渔业 • 上一篇    下一篇

星斑川鲽仔稚鱼消化系统发育的组织学研究

方华华 王波   

  • 收稿日期:2010-12-19 修回日期:2011-01-27 出版日期:2011-06-15 发布日期:2011-06-15
  • 基金资助:

    国家海洋公益性行业科研专项经费项目;国家农业科技成果转化资金项目

Histological Studies on the Development of Digestive system In Larval and Juvenile Starry Flounder

  • Received:2010-12-19 Revised:2011-01-27 Online:2011-06-15 Published:2011-06-15

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摘要：

使用石蜡切片技术对1-35日龄星斑川鲽的仔稚鱼消化系统进行组织学观察和研究。结果表明，星斑川鲽消化系统的发育主要分成三个阶段：从初孵到3日龄是卵黄阶段，其消化道为一细长的管道；从3日龄到5日龄是后卵黄阶段(混合营养阶段)，卵黄被逐渐吸收，是卵黄阶段转向外源性营养阶段的过渡，消化道明显分化成口咽腔、食道、胃、前中肠、后肠和肛门，仔鱼消化系统具备了摄食和消化外源性食物的能力。此后，随着鱼体的生长，粘膜层的褶皱增加，消化道上皮细胞进一步分化，消化系统从功能和结构上逐步完善。16日龄，胃腺出现，标志着稚鱼期的开始,表明星斑川鲽是一种发育较快的鱼类。

关键词: ISSR, ISSR

Abstract:

A histological examination was made on the development of digestive system in larval and juvenile starry flounder Platichthys stellatus Pallas from 1 day to 35 days. In 3 days, the digestive tract in the larvae was formed but no food was intaken when the starry flounde was in endotrophic stage. In 3-5 days , the mixotrophic stage which was the transition from endo- trophic stage to exdoerophic stage, the yolk was absorbed fairly well and disappesred , while the digestive tract was differentiated into six portions: buccopharynnx, soesophagus , stomach , anterior- middleinte- stine , posterior intestine and anus. The larval digestive system was morphologically ready to be absorbed to food at this time. Then , these digestive tract and associated glands became mature gradually with the development. Gastric glands were observed in 16 days , which indicates he was a kind of fish faster development.