摘要
在 13.5 ,18,2 1.5 ,2 4和 2 7℃ 5个温度条件下测定了梭鱼 (体重范围 1.88～ 14.0 2 g)的标准代谢率和内源氮排泄率。梭鱼标准代谢率随体重的增加而增加 ,二者的关系为幂函数关系 ;随温度的升高而增加 ,二者的关系为指数关系 ;标准代谢率与体重和温度的关系可用如下方程表示 :RS=0 .12 4 6 W0 .9954 e0 .0 84 1T(r2 =0 .92 2 0 )。梭鱼的氨氮、尿素、总氮及能量的排泄率随体重和温度的增加而增加 ,与体重为幂函数关系 ,与温度的关系为多项式形式。梭鱼氨氮和尿素日排泄率的变幅分别为 0 .15～ 0 .88mg N/d和 0 .0 3～ 0 .2 9mg N/d。不同温度下 ,尿素排泄量占总氮比例在 9.9%～2 2 .4 9%之间 ,随温度升高该值有逐渐增大的趋势。
The effects of temperature and body weight on standard metabolism and nitrogen excretion of the mullet, Liza haematocheila (T. et S.), were studied from May to December in 1999 at 13.5, 18, 21.5, 24 and 27℃. The rate of standard metabolism of mullet increased with body weight according to a power function and augmented with temperature according to an exponential function. The relative relationship could be expressed by the following multiple regression equation: R S =0.124 6 W 0.995 4 e 0.084 1 T ( r 2 = 0.922 0) . The endogenous excretion rate of ammonia ( ENE am ), urea ( ENE u ), total nitrogen ( ENE N ) and energy ( ENE e ) increased with increasing temperature and body weight. The relationships were: ln( ENE am )=-0.019 6+0.682 6ln( W )+0.013 3 T 2 - 0.411 5 T ( r 2= 0.954 5); ln( ENE u )=0.484 5+0.994 1ln( W )+0.024 3 T 2 -0.791 4 T ( r 2 =0.942 5); ln( ENE N )=0.455 1+0.730 7ln( W )+0.014 9 T 2 -0.465 0 T ( r 2= 0.971 4) ; and ln( ENE e )=3.637 0+0.727 8ln( W )+0.014 8 T 2 -0.461 7 T . The daily excretion rates of ammonia and urea were in the range of 0.15～0.88mg N/d and 0.03～0.29mg N/d respectively.
出处
《青岛海洋大学学报（自然科学版）》
CSCD
北大核心
2002年第3期368-374,共7页
Journal of Ocean University of Qingdao
基金
国家自然科学基金重大项目 ( 4 9790 1 0 0 1 )
关键词
标准代谢
内源氮排泄
梭鱼
体重
温度
standard metabolism
endogenous nitrogen excretion rate
Liza haematocheila (T. et S.)
body weight
temperature
