文章摘要
汪留全,程云生.池养条件下革胡子鲶仔幼鱼摄食习性与生长的初步研究[J].水产学报,1990,14(2):105~113
池养条件下革胡子鲶仔幼鱼摄食习性与生长的初步研究
ON THE FEEDING HABITS AND GROWTH FOR LARVAL OF CLARIAS LAZERA UNDER POND NURSERY
投稿时间:1989-11-01  修订日期:1990-01-01
DOI:
中文关键词: 池塘培育  革胡子鲶仔幼鱼  攝食习性  生长
英文关键词: pond nursery  larvae of Clarias lazera  feeding habits  growth
基金项目:
作者单位
汪留全 安徽省农业科学院水产研究所 
程云生 安徽省农业科学院水产研究所 
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中文摘要:
      本文报道了在人工饲养条件下革胡子鲶仔幼鱼的摄食习性和生长的研究结果。仔鱼孵出2或3日,尚残存卵黄囊时即行开口摄食。仔鱼适口的开食饵料是轮虫,随着鱼体的生长,摄食枝角类、桡足类和摇蚊幼虫的比例迅速增加。幼鱼昼夜摄食强度有一定的节律,夜间18:00~22:00时摄食强度最大。经测量和数理统计分析,确定革胡子鲶仔幼鱼的全长与日龄呈直线关系,体重与日龄和全长对体重的关系均为幂函数关系,并计算出它们相应的回归方程式。
英文摘要:
      This paper deals with the experiments of feeding habits and growth of larval Clarias lazera. Two or three days after they were hatched, the larvae began to feed, though their yolk sac still remained. The total length of larvae are 5-5.5 mm; their oral width are 132-138μ, and the initial food are rotifers. With the growth of larvae, the feeding ratio of cladoceran, copepods and chironomids increases repidly. Rhythm of feeding intensity is obvious during the day and night. The highest feeding intensity is 18:00-22:00 at night. The relationship of total length with age falls on a straight line, but that of weight with age is exponential. The regression equation of total length, weight and age is determined through calculation based on the measurement of 174 individuals. The general equation for the larvae can be expressed as W = 0.004927 L(a.1988).
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