| 延迟首次投喂对河川沙塘鳢仔鱼和稚鱼消化系统发育的影响 |
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| 引用本文： | 郭莎园,李加敏,胡先成.延迟首次投喂对河川沙塘鳢仔鱼和稚鱼消化系统发育的影响[J].河北农业科学,2011,15(6):53-57,94. |
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| 作者姓名： | 郭莎园 李加敏 胡先成 |
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| 作者单位： | 1. 重庆师范大学生命科学学院,重庆,400047
2. 重庆师范大学动物生物学重庆市市级重点实验室,重庆,400047 |
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| 基金项目： | 重庆市教委科学技术研究项目(KJ090827); 重庆市科技创新能力建设项目(2010CA1010); 重庆师范大学重点科研项目(08XLB001) |
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| 摘 要： | 采用石蜡包埋切片方法，对延迟首次投喂组与投喂组（CK）河川沙塘鳢初孵仔鱼、3日龄仔鱼、6日龄仔鱼、9日龄稚鱼、12日龄稚鱼、15日龄稚鱼和18日龄稚鱼消化系统的发育过程进行了研究。结果表明：在延迟首次投喂期间，初孵仔鱼～9日龄稚鱼消化系统发育缓慢，表现为消化道各部分管腔较细、壁层较薄，肝脏增长缓慢，肝细胞空泡化程度低等；对河川沙塘鳢孵出后的9日龄饥饿稚鱼恢复摄食，发现其在短时期内消化系统发育迅速，到孵出后15日龄，消化系统各部分的形态特征与正常摄食组的稚鱼类似。研究结果显示，河川沙塘鳢在仔鱼期进行饥饿处理，进入稚鱼期恢复投喂饵料后，该鱼能够快速利用外源性营养补偿机体生长和发育所需要的能量，从而很快地恢复生长。
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| 关 键 词： | 延迟首次投喂 河川沙塘鳢 仔鱼 稚鱼 消化系统发育 |
Effects of Delayed First Feeding on Digestive System Development ofOdontobutis potamophilaLarvae and Juvenile |
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| GUO Sha-yuan,LI Jia-min,HU Xian-cheng.Effects of Delayed First Feeding on Digestive System Development ofOdontobutis potamophilaLarvae and Juvenile[J].Journal of Hebei Agricultural Sciences,2011,15(6):53-57,94. |
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| Authors: | GUO Sha-yuan LI Jia-min HU Xian-cheng |
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| Institution: | GUO Sha-yuan1,LI Jia-min1,HU Xian-cheng2(1.School of Life Sciences,Chongqing Normal University,Chongqing 400047,2.Chongqing Key Laboratory of Animal Biology,China) |
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| Abstract: | Paraffin-embedded section method was used to study the digestive system development of O.potamophila newly hatched larvae,3 days larvae,6 days larvae,9 days juvenile,12 days juvenile,15 days juvenile and 18 days juvenile,by comparing the delayed first feeding group and the regular feeding group(CK).The results showed that the delayed first feeding hindered the development of digestive system of newly hatched larvae to 9 days juvenile:lumen of digestive tract was smaller and thinner,liver grew slowly,vacuola... |
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| Keywords: | Delayed first feeding Odontobutis potamophila Larvae Juvenile Digestive system development |
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