| 延迟投饵对鱼仔鱼早期阶段摄食、存活及生长的影响 |
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| 引用本文： | 徐镇,江锦坡. 延迟投饵对鱼仔鱼早期阶段摄食、存活及生长的影响[J]. 宁波大学学报(理工版), 2008, 21(2): 178-181 |
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| 作者姓名： | 徐镇 江锦坡 |
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| 作者单位： | 宁波大学生命科学与生物工程学院,浙江宁波315211 |
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| 基金项目： | 宁波大学科研基金（XK200443;XK200531）. |
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| 摘 要： | 对延迟投饵0～6d的鮸鱼仔鱼的摄食、生长与存活进行了研究，结果表明：（1）当海水温度为24．5～25℃，盐度为24．2～24．8时，鮸鱼仔鱼3日龄后开口摄食，初次摄食率为25％．其不可逆点（PNR）出现在开口后第3天；（2）鮸鱼仔鱼体长的增长率随着延迟投饵天数的增加而减低，鮸鱼仔鱼的存活率亦随着延迟投饵天数的增加而降低，延迟6d投饵，8日龄仔鱼全部死亡；（3）鮸鱼仔鱼的适宜投饵时间为孵出后的1d之内．
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| 关 键 词： | 鮸鱼 仔鱼 延迟投饵 摄食 存活 |
Effect of Delayed Initial Feeding on Foraging,Growth and Survival of Miichthys miiuy Larvae |
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| XU Zhen,JIANG Jin-po. Effect of Delayed Initial Feeding on Foraging,Growth and Survival of Miichthys miiuy Larvae[J]. Journal of Ningbo University(Natural Science and Engineering Edition), 2008, 21(2): 178-181 |
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| Authors: | XU Zhen JIANG Jin-po |
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| Affiliation: | ( Faculty of Life Science and Biotechnology, Ningbo University, Ningbo 315211, China) |
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| Abstract: | Effects of delayed initial feeding on foraging, growth and survival of Miichthys miiuy larval is investigated. The results suggest that： （1） at a temperature of 24.5-25℃ and salinity of 24.2-24.8, the larval mouth opened 3 days after hatching, and the initial feeding rate was 25 % . The point of no return （PNR） of Miichthys miiuy larvae was on the 3rd day after the mouth opening. （2） The growth and survival rates decrease with increase Of feeding-delayed time. If feeding time is delayed by 6 days, all of larvae were identified died at age of 8-day. （3）The optimum first feeding time ofMiichthys miiuy larvae is found to be the 1 day after hatching. |
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| Keywords: | Miichthys miiuy larvae delayed initial feeding foraging survival |
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