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瓯江彩鲤仔鱼摄食与生长研究
引用本文:何登菊,姚俊杰,安苗,李川.瓯江彩鲤仔鱼摄食与生长研究[J].广东农业科学,2010,37(9):166-169.
作者姓名:何登菊  姚俊杰  安苗  李川
作者单位:贵州大学动物科学学院,贵州,贵阳,550025
基金项目:贵州大学自然科学专项基金,贵州省教育厅培育项目 
摘    要:对瓯江彩鲤卵黄囊期仔鱼的发育进行了连续观察,研究其在开口摄食前的发育、生长以及初次摄食饥饿不可逆点(PNR)。结果表明:(1)仔鱼对卵黄囊的日净消耗量的最大值出现在出膜后的第1d,体长最大增长率出现在3日龄仔鱼;(2)孵化后第7d即6日龄仔鱼,卵黄囊基本全部被吸收,同时,饥饿期仔鱼开始出现负生长;(3)3日龄仔鱼开始摄食,5日龄仔鱼初次摄食率达84.38%,8日龄仔鱼降到41.94%,进入PNR,从刚孵化到仔鱼初次摄食饥饿"不可逆点"的时距达9d;(4)仔鱼混合营养期较短,为3d,摄食能力时间可持续8d。

关 键 词:瓯江彩鲤  卵黄囊期仔鱼  摄食  生长

Studies on growth and feeding of the yolk-sac larvae of Cyprinus carpio var.color
HE Deng-ju,YAO Jun-jie,AN Miao,LI Chuan.Studies on growth and feeding of the yolk-sac larvae of Cyprinus carpio var.color[J].Guangdong Agricultural Sciences,2010,37(9):166-169.
Authors:HE Deng-ju  YAO Jun-jie  AN Miao  LI Chuan
Affiliation:HE Deng-ju,YAO Jun-jie,AN Miao,LI Chuan (College of Animal Sciences,Guizhou University,Guiyang 550025,China)
Abstract:The development of the yolk-sac larvaeof Cyprinus carpio var. color in the period of starvation were observed and the point of no return( PNR) was also studied. The results showed that:(1) After hatching, the highest yolk-sac consuming rate happened on the first day, while the highest growth rate of total length of larvae occurred on the third day;(2) On the sixth day after hatching, the yolk-sac was absorbed completely, from then the starved larvae decreased in total length;(3)After hatching, the larvae st...
Keywords:Cyprinus carpio var  color  yolk-sac larvae  feeding  growth  
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