| 饥饿对杂交鲟消化系统发育的影响 |
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| 引用本文： | 高露姣,陈立侨,宋兵,赵晓勤,陈亚瞿.饥饿对杂交鲟消化系统发育的影响[J].上海水产大学学报,2006,15(4):442-447. |
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| 作者姓名： | 高露姣 陈立侨 宋兵 赵晓勤 陈亚瞿 |
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| 作者单位： | 中国水产科学研究院东海水产研究所农业部海洋与河口渔业重点开放实验室，华东师范大学生命科学学院，华东师范大学生命科学学院，华东师范大学生命科学学院，中国水产科学研究院东海水产研究所农业部海洋与河口渔业重点开放实验室 上海200090，华东师范大学生命科学学院，上海200062，上海200062，上海200062，上海200062，上海200090 |
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| 基金项目： | 教育部跨世纪优秀人才培养计划;长江口航道建设有限公司资助项目 |
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| 摘 要： | 杂交鲟(Huso huso♀×Acipenser baeri♂)仔鱼消化道发育表现从远端逐渐到近端的发育过程,而且在其内源性营养阶段变化更剧烈。初孵仔鱼消化系统处于原始分化状态:整个消化道只有内胚层细胞及内部的卵黄颗粒和部分分化的后肠,口与肛门均未与外界相通;随着卵黄囊的吸收,仔鱼分别于孵化后第3天分化出胃和十二指肠;第8~9天才出现具有胃腺的贲门胃,十二指肠和肝脏发生较明显的分化,显示功能性消化系统的形成。仔鱼遭受长期饥饿后(即12 d后投喂),消化道几乎停止发育,24~25 d后则明显退化,表现为长度缩短,管径变小,组织学显示:胃腺细胞萎缩和数量减少,胃肌纤维排列疏松;肠微绒毛断裂,上皮细胞高度下降,细胞内的空泡减少;肝组织逐步呈溃散状态,肝细胞索破坏,细胞界限模糊,核仁呈现萎缩或解体。
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| 关 键 词： | 饥饿 杂交鲟(欧洲鳇♀×西伯利来鲟♂) 仔鱼 消化系统 发育 |
| 文章编号： | 1004-7271（2006）04-0442-06 |
| 收稿时间： | 2005-10-18 |
| 修稿时间： | 2005年10月18 |
Effect of starvation on digestive system development of hybrid sturgeon ( Huso huso ♀ × Acipenser baeri ♂ ) larvae |
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| GAO Lu-jiao,CHEN Li-qiao,SONG Bing,ZHAO Xiao-qin,CHEN Ya-qu.Effect of starvation on digestive system development of hybrid sturgeon ( Huso huso ♀ × Acipenser baeri ♂ ) larvae[J].Journal of Shanghai Fisheries University,2006,15(4):442-447. |
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| Authors: | GAO Lu-jiao CHEN Li-qiao SONG Bing ZHAO Xiao-qin CHEN Ya-qu |
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| Abstract: | During endogenous feeding phase,differentiation of the digestive tract was an asynchronous and very intense phenomenon,proceeding from the distal to the proximal part.At hatching,the digestive tract was represented by a gastric cavity filled with yolk and partially differentiated hindgut,and did not communicate with the exterior as the mouth and anus were not yet opened.Along with the yolk sac absorption,stomach and duodenum,were differentiated 3 days post hatch,respectively.By 8-9 days post hatch,the glandular stomach(cardiac region) was developed,meanwhile there was marked differentiation in duodenum and liver.It suggested a functional alimentary canal was developed.But if the initial feeding time was 12 days post hatch,digestive tract developed hardly.If starved to 24-25 d,digestive system of trial fish was retrograded.The alimentary canal seemed shorter and thinner;Cells of gastric gland decreased and became shrunken;Muscle fiber of stomach turned to loosened,under light microscope.Furthermore,intestine columnar epithelium became lowered and microvilli ruptured histologically.The structure of liver was broken,such as ligature of hepatic cells became ruptured,nucleolus of hepatic cells destroyed,and there were no bounds among hepatic cells. |
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