| 摘要: |
| 在淡水、1.00、2.00、3.00、4.00盐度等条件下,采用鱼类生物能量学的方法,测定了河川沙塘鳢胚胎、仔鱼发育过程中的耗氧率、NH3-N排泄率,并对不同盐度下河川沙塘鳢胚胎、仔鱼发育过程中的能量流转进行了研究。结果表明,在不同发育时期,盐度对耗氧率和NH3-N排泄率都有显著影响,以1.00盐度条件下的耗氧率为最低,而NH3-N排泄率则在淡水条件下为最低并随着盐度的升高逐渐增高;盐度对河川沙塘鳢胚胎、仔鱼发育过程中的能量收支有显著影响,以1.00盐度条件下的能量分配模式为最佳模式,代谢耗能占食物能的比例(R/C)最低,为35.06%,而生长能占食物能的比例(G/C)最高,达到58.55%,能量收支方程为:100C=6.40U+35.06R+58.55G。 |
| 关键词: 河川沙塘鳢 胚胎 仔鱼 盐度 耗氧率 NH3-N排泄率 能量收支 |
| DOI： |
| 分类号: |
| 基金项目:上海市科学技术委员会重大项目,04DZ19301号;重庆市动物生物学重点实验室项目,0402号 |
附件 |
|
| EFFECT OF SALINITY ON ENERGY BUDGET DURING EMBRYONIC AND LARVAL DEVELOPMENT OF ODONTOBUTIS POTAMOPHILA |
|
HU Xian-Cheng1,2, ZHOU Zhong-Liang2, ZHAO Yun-Long2, WANG Yan1, QIN Fen2, XU Xiao-Qian2
|
|
1.Key Laboratory of Animal Biology, Chongqing Normal University, Chongqing, 400047;2.School of Life Science, East China Normal University, Shanghai, 200062
|
| Abstract: |
| Using a system of fish-bioenergetics, the energy conversion of Odontobutis potamophila (Gunther) during embryonic and larval development was studied under different salinities of 0.00, 1.00, 2.00, 3.00 and 4.00. The results show that the salinity effects on oxygen consumption rate and NH3-N excretion rate were significant. The oxygen consumption rate was the minimum at salinity of 1.00. The NH3-N excretion rate was the minimum at salinity of 0.00 and increased gradually with the increase in salinity. The salinity effect on energy budget was also significant. At salinity of 1.00, the proportion of food energy allocated to metabolism (R/C) was the minimum (35.06%), and that to growth (G/C) was the maximum (58.55%). The mode of energy allocation at salinity of 1.00 was the best. |
| Key words: Odontobutis potamophila (Gunther), Embryo, Larval fish, Salinity, Oxygen consumption rate, NH3-N excretion rate, Energy budget |
