文章摘要
王建国,王权,封琦,熊良伟,王远祥.溶氧胁迫下中华鳑鲏的呼吸和氮代谢生理研究[J].上海海洋大学学报,2016,25(2):183-188.
WANG Jianguo,WANG Quan,FENG Qi,XIONG Liangwei,WANG Yuanxiang.Effect of dissolved oxygen stress on respiration physiology and nitrogen metabolism in Rhodeus sinensis[J].Journal of Shanghai Ocean University,2016,25(2):183-188.
溶氧胁迫下中华鳑鲏的呼吸和氮代谢生理研究
Effect of dissolved oxygen stress on respiration physiology and nitrogen metabolism in Rhodeus sinensis
投稿时间:2015-08-07  修订日期:2015-11-02
DOI:10.12024/jsou.20150801524
中文关键词: 中华鳑鲏  溶氧  呼吸生理  氮代谢
英文关键词: Rhodeus sinensis  oxygen  respiration physiological  nitrogen metabolism
基金项目:江苏省三新工程项目(Y2015-25);凤凰人才工程(2014020807);江苏省创新创业项目(20152806008Y)
作者单位E-mail
王建国 江苏农牧科技职业学院, 江苏 泰州 225300  
王权 江苏农牧科技职业学院, 江苏 泰州 225300 753004258@qq.com 
封琦 江苏农牧科技职业学院, 江苏 泰州 225300  
熊良伟 江苏农牧科技职业学院, 江苏 泰州 225300  
王远祥 江苏农牧科技职业学院, 江苏 泰州 225300  
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中文摘要:
      采用静水呼吸法研究了中华鳑鲏(1.070±0.068) g在溶氧逐渐降低环境中呼吸耗氧和氮代谢生理水平的变化。结果显示温度在(23.2±0.2) ℃时,中华鳑鲏饱食和饥饿状态下耗氧率分别为0.441 mg/(g·h)和0.297 mg/(g·h),排氨率分别为1.6 μg/(g·h)和0.5 μg/(g·h);溶氧低于1.5 mg/L开始浮头,低于0.31 mg/L开始死亡。当溶氧降低时耗氧率和排氨率均显著降低,但仍表现出一定的昼夜节律性,白天(6:00~14:00时)较夜间(10:00~2:00)高。在低溶氧环境中氨氮、亚硝酸氮浓度逐渐增加,水质环境随时间延长会逐渐恶化。实验结果提示在溶氧逐渐降低的环境胁迫下中华鳑鲏的呼吸作用和氮代谢水平会逐渐下降。因此,在养殖和运输中华鳑鲏过程中溶氧水平需始终保持在1.5 mg/L以上,运输前停食进行饥饿运输较佳。
英文摘要:
      The respiration physiology and nitrogen metabolism of Rhodeus sinensis were studied with closed respirometry at (23.2±0.2) ℃, and under such condition, the dissolved oxygen reduced gradually. The results showed that the oxygen consumption rate (OCR) and ammonia excretion rate (AER) of Rhodeus sinensis with satiety and hunger were 0.441 mg/(g·h), 0.297 mg/(g·h)and 1.6 μg/(g·h), 0.5 μg/(g·h) respectively. Rhodeus sinensis floated head and died when the dissolved oxygen was less than 1.5 mg/L and 0.31 mg/L,respectively. OCR and AER reduced significantly as the dissolved oxygen reduced,and then there were diurnal variations in both OCR and AER.Water quality was deteriorating as the dissolved oxygen was reducing,because the ammonia and nitrite increased obviously in aquarium. The present study preliminarily revealed that dissolved oxygen stress would have a significant influence on the respiratory metabolism and nitrogen metabolism of Rhodeus sinensis.So, it was necessary to keep dissolved oxygen above 1.5 mg/L for feeding and transporting of Rhodeus sinensis, and it was a good choice for transporting with hunger.
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