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| 延迟投饵对厚颌鲂仔鱼的影响 | |
| 引用本文： | 程鹏,熊玉宇,王剑伟,沈建忠,谭德清. 延迟投饵对厚颌鲂仔鱼的影响[J]. 四川动物, 2009, 28(2) |
| 作者姓名： | 程鹏 熊玉宇 王剑伟 沈建忠 谭德清 |
| 作者单位： | 1. 中国科学院水生生物研究所,武汉,430072;华中农业大学水产学院;武汉科技学院 2. 中国科学院水生生物研究所,武汉,430072 3. 华中农业大学水产学院 |
| 基金项目： | 国务院三峡工程建设委员会办公室生态环境项目，长江上游珍稀、特有鱼类及保护区措施补偿科研项目，国家自然科学基金 |
| 摘 要： | 在室内养殖条件下,研究厚颌鲂仔鱼的摄食、耐饥饿和恢复生长能力.试验结果表明:(1)仔鱼在孵出后2～3 d开口摄食,卵黄囊在之后的2 d耗尽,饥饿仔鱼在12～13日龄达到不可逆点(PNR);(2)饥饿仔鱼的初次摄食率在卵黄囊耗尽时达到最高,保持在80%以上的时间为7 d;(3)仔鱼在PNR后死亡率急剧增加,PNR后第3 d仔鱼全部死亡;(4)经恢复生长试验,延迟3 d投饵对仔鱼的存活率影响不大,延迟3～6 d投饵对仔鱼全长生长影响不大. |
| 关 键 词： | 厚颌鲂 仔鱼 延迟投饵 不可逆点 恢复生长 |
Effects of Delayed Feeding on Megalobrama pellegrini (Tchang) Larvae |
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| CHENG Peng,XIONG Yu-yu,WANG Jian-wei,SHEN Jian-zhong,TAN De-qing. Effects of Delayed Feeding on Megalobrama pellegrini (Tchang) Larvae[J]. Sichuan Journal of Zoology, 2009, 28(2) | |
| Authors: | CHENG Peng XIONG Yu-yu WANG Jian-wei SHEN Jian-zhong TAN De-qing |
| Affiliation: | 1.Institute of Hydrobiology;the Chinese Academy of Sciences;Wuhan 430072;China;2.Fishery College;Huazhong Agricultural University;3.Wuhan University of Science and Engineering |
| Abstract: | Under indoor cultivation,the feeding ability,starvation tolerance and recovery growth of the larvae of Megalobrama pellegrini(Tchang)has been studied.Results indicated that:(1)The larvae began to feed on 2~3 days after hatching,and the yolk was exhausted on 2 days after its feeding.The point-of-no-return(PNR,when 50% larvae are no longer strong enough to feed)was on 12 to 13 days after hatching.(2)The initial feeding rate reached its peak when the yolk became exhausted,and the time keeping the feeding rate ... |
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