| 丁Gui胚胎发育和卵黄囊仔鱼摄食研究 |
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| 引用本文： | 凌去非.丁Gui胚胎发育和卵黄囊仔鱼摄食研究[J].水产学报,2003,27(1):43-48. |
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| 作者姓名： | 凌去非 |
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| 作者单位： | 1. 上海水产大学农业部水产增养殖、生态生理重点开放实验室,上海,200090
2. 新疆生产建设兵团农十师额河特种鱼类繁育场,新疆,北屯,836000 |
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| 基金项目： | 新疆生产建设兵团科委农业科学研究与技术开发项目(NKB02NK16XM) |
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| 摘 要： | 对丁Gui的胚胎发育进行了连续观察，并对其卵黄囊仔鱼在开口摄食之前的发育、生长以及不可逆点作了实验研究。结果表明：（1）丁Gui受精卵在水温21.5℃时，胚胎发育时间约为52h；（2）仔鱼在孵出后第7天开始摄食，初次摄食率第9天达100%，第12天降到50%，进入不可逆点；（3）仔鱼对卵黄囊的日净消耗量的最大值出现在出膜后第1天，体长最大增长率出现的在出膜后的第2天；（4）仔全出膜后第8天，卵黄囊全部吸收，同时，饥饿期仔鱼开始出现负生长。
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| 关 键 词： | 丁Gui 胚胎发育 卵黄囊仔鱼 摄食 不可逆点 |
| 文章编号： | 1000-0615(2003)01-0043-06 |
| 收稿时间： | 2014/3/20 0:00:00 |
| 修稿时间： | 2002年4月18日 |
The study on the embryonic development and feeding of the yolk-sac larvae of Tinca tinca |
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| LING Qu fei.The study on the embryonic development and feeding of the yolk-sac larvae of Tinca tinca[J].Journal of Fisheries of China,2003,27(1):43-48. |
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| Authors: | LING Qu fei |
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| Affiliation: | Key Laboratory of Ecology and Physiology in Aquaculture Certificated by the Ministry of Agriculture, Shanghai Fisheries University , Shanghai 200090, China |
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| Abstract: | The development of the fertilized eggs and the development and growth of yolk-sac larvae of Tinca
tinca in the period of starvation were observed and the point of no return ( PNR) was also studied. The results
show that : ( 1) The embryo was hatched for about 52 h before hatching out with water temperature 21. 5 e . ( 2)
After hatching, the larvae started to feed on the seventh day with low initial feeding rate, the initial feeding rate
reached the highest figure 100% on the ninth day , and then decreased to 50% on the twelfth day, while the
larvae reached the poin-t of-no-return. ( 3) After hatching, the highest yolk-sac consuming rate happened on the
f irst day, while the highest growth rate of total length of larvae occurred on the second day. ( 4) On the eighth
day after hatching, the yolk sac was absorbed completely, from then the starved larvae decreased in total length. |
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| Keywords: | Tinca tinca embryonic development yolk-sac larvae feeding point of no return |
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