大西洋牙鲆幼鱼标准代谢的初步研究  

A Preliminary Study on Standard Metabolism of Juvenile Summer Flounder (Paralichthys dentatus)

作　　者：王波[1] 李继强 曹志海 李德军 孙庆霞 朱明远[1] 毛兴华[1] 

机构地区：[1]国家海洋局第一海洋研究所,山东青岛266061 [2]青岛市渔业技术推广站,山东青岛266001 [3]青岛胶南市渔业技术推广站,山东青岛266400

出　　处：《海洋科学进展》2004年第1期62-68,共7页Advances in Marine Science

基　　金：农业部"948"办公室资助项目--犬齿牙鲆种质与养殖技术引进(983095);山东省科学技术发展计划资助项目--中美牙鲆繁殖调控及杂交育种研究(031070121)

摘　　要：测定了大西洋牙鲆幼鱼在禁食和静息状态下的呼吸耗氧率、氨氮排泄率和CO2排出率;研究了它们的呼吸商、氧氮比、能量代谢的特征和能源的化学本质。结果表明,大西洋牙鲆在水温10.8～21.5℃时,其耗氧率Q10=2.336,代谢率的体重系数b=0.832。白天能量代谢率为2.00J/(h·g),夜间能量代谢率为1.474J/(h·g),白天是夜间的1.357倍,最高值出现在09:00(上午),代谢率为2.525J/(h·g),最低值在03:00(夜间),代谢率为1.147J/(h·g)。在水温4～26℃时大西洋牙鲆平均呼吸耗氧率为0.123mg/(h·g);氨氮排泄率2.654μg/(h·g);CO2排出率0.135mg/(h·g);代谢率1.773J/(h·g);O∶N=38.8;呼吸商为0.791。大西洋牙鲆以蛋白质、脂肪和糖类3种营养物质的混合物为能源,随着温度的升高和个体的生长O∶N比值增加,即代谢底物中蛋白质用于氧化供能的比例相对减少,用于生长的比例增加。The oxygen consumption rate, ammonia excretion rate and CO_2 emission rate of the juvenile summer flounder (Paralichthys dentatus) in fasting and resting states were determined, and the respiratory quotient, oxygen-nitrogen ratio, energy metabolism characteristics and chemical nature of energy source were also studied. It is shown from the study results that the oxygen consumption rate of summer flounder at water temperature of 10.8℃～21.5℃ Q_(10)=2.236. The avoirdupois coefficient of metabolic rate b=0.832. The metabolic rate in the daytime is 2.00 J/(h·g), and that in the nighttime is 1.474 J/(h·g), so the metabolic rate in the daytime is 1.375 times that in the nighttime; the highest metabolic rate (2.525 J/(h·g)) occurs at nine o'clock in the nighttime. The average oxygen consumption rate of summer flounder at water temperature of 4 ℃～26 ℃ is 0.123 mg/(h·g), the ammonia excretion rate is 2.654 mg/(h·g), the CO_2 emission rate is 0.135 mg/(h·g), the metabolic rate is 1.773 J/(h·g), the oxygen-nitrogen ratio is 38.8, and the respiratory quotient is 0.791. The summer flounder takes the mixture of protein, fat and saccharide as energy source, and the oxygen-nitrogen ratio increases with increasing water temperature and physical growth, which indicates that an increasing proportion of protein in the metabolic substrate is used for the physical growth rather than for the energy supply by oxidation.

关 键 词：大西洋牙鲆 耗氧率 氨氮排泄率 CO2排出率 能量代谢 

分 类 号：Q959.486[生物学—动物学]