| 王刚,李加儿,区又君,胡玲玲,张建生.2010.卵形鲳鲹幼鱼耗氧率和排氨率的初步研究.动物学杂志,45(3):116-121. |
| 卵形鲳鲹幼鱼耗氧率和排氨率的初步研究 |
| Oxygen Consumption and Ammonia Excretion of the Juvenile Trachinoms ovatus |
| 投稿时间：2009-10-28 修订日期：2010-03-04 |
| DOI： |
| 中文关键词: 卵形鲳鲹 幼鱼 耗氧率 排氨率 窒息点 |
| 英文关键词:Trachinoms ovatus Juvenile Oxygen consumption rate Ammonia excretion rate Asphyxiation point |
| 基金项目:中央级公益性科研院所基本科研业务费专项资金项目(No.2008YD02) |
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| 中文摘要: |
| 运用封闭流水式实验方法对不同体重和放养密度的卵形鲳鲹(Trachinomsovatus)幼鱼耗氧率和排氨率进行了初步的研究。结果表明,卵形鲳鲹幼鱼的耗氧率随着鱼体重的增加而逐渐下降,排氨率总体上也呈降低的趋势,体重对卵形鲳鲹耗氧率、排氨率的影响均达到显著水平(P<0.05);光照对卵形鲳鲹幼鱼的耗氧率和排氨率影响非常显著(P<0.01),幼鱼在遮光条件下的耗氧率和排氨率分别比在自然光照条件下要低25.18%～40.76%和16.28%～40.28%;随着放养密度的增加,卵形鲳鲹幼鱼的耗氧率逐渐降低,排氨率随着密度的增加呈先上升后下降的趋势,放养密度对卵形鲳鲹耗氧率、排氨率的影响均达到显著水平(P<0.05)。卵形鲳鲹的耗氧率和排氨率具有明显的昼夜变化,白天的耗氧率和排氨率均高于夜间值,耗氧率的低谷值为高峰值的69.68%,排氨率的低谷值为高峰值的30.91%。卵形鲳鲹幼鱼的窒息点溶解氧含量为(0.991±0.058)mg/L。 |
| 英文摘要: |
| The effects of weight and stocking density on oxygen consumption and ammonia excretion of Trachinoms ovatus were determined by the closed flow experimental methods. The results showed that the oxygen consumption of juvenile T. ovatus decreased as its weight increased(P < 0. 05). Light had significant effects on oxygen consumption and ammonia excretion. The oxygen consumption and ammonia excretion of the fry under dark condition was 25. 18% - 40. 76% and 16. 28% - 40. 28% lower than these in the natural light conditions. The oxygen consumption of T. ovatus increased with the increase of stocking density. Ammonia excretion of T. ovatus showed the trend of hyperbola with stocking density increasing( P < 0. 05). Diurnal variation of oxygen consumption rate and ammonia excretion rate in T. ovatus was significant,average oxygen consumption and ammonia excretion in day time were higher than these at night,oxygen consumption in valley bottom value being 69. 68% of that of peak value and ammonia excretion in valley bottom value being only 30. 91% of that of peakvalue. The asphyxiation point of juvenile T. ovatus was 0. 991 ± 0. 058 mg /L. |
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