| 温度对饥饿状态下南方鲇幼鱼氨氮排泄的影响 |
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| 引用本文： | 况莉,XIE Xiao-jun,谢小军.温度对饥饿状态下南方鲇幼鱼氨氮排泄的影响[J].西南师范大学学报(自然科学版),2001,26(1):45-50. |
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| 作者姓名： | 况莉 XIE Xiao-jun 谢小军 |
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| 作者单位： | 1. 西南师范大学水产科学研究所,
2. Institute of Fisheries Science, Southwest China Normal University, |
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| 基金项目： | 国家自然科学基金(39870159). |
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| 摘 要： | 于2000年4月至5月，测定了温度对饥饿状态下南方鲇幼鱼(体质量18.4～36.0g)的氨氮排泄的影响.在12.5℃，17.5℃，22.5℃，27.5℃和32.5℃水温下，南方鲇的特殊体质量排氨率分别为1.83，3.86，5.52，7.37和9.29mg/(kg
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| 关 键 词： | 鱼类能量学 温度效应 南方鲇 幼鱼 氨氮排泄 排氨率 蛋白质分解代谢 |
| 文章编号： | 1000-5471(2001)01-0045-06 |
| 修稿时间： | 2000年10月25 |
Effect of Water Temperature on Ammonia-N Excretion in Starved Juvenile Southern Catfish (Silurus Meridionalis Chen) |
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| KUANG Li,XIE Xiao jun.Effect of Water Temperature on Ammonia-N Excretion in Starved Juvenile Southern Catfish (Silurus Meridionalis Chen)[J].Journal of Southwest China Normal University(Natural Science),2001,26(1):45-50. |
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| Authors: | KUANG Li XIE Xiao jun |
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| Abstract: | An experiment was conducted to evaluate the effect of wa ter temperature on ammonia-N excretion rates in starved juvenile southern catfi sh with 18.4～36.0 g of body weight, from April to May, 2000. The specific-wei gh t rates of ammonia-N excretion were 1.83, 3.86, 5.52, 7.37 and 9.29 mg／(k g.h)at 12.5℃, 17.5℃，22.5℃,27.5℃ and 32.5 ℃, respectively. There was a significant corr elation between the rate of ammonia-N excretion (AN) and temperature (t ). Itcan be described as: AN = 0.028 5 t1.67 (n=40, r=0.902, P<0.01), or AN=-2.71 + 0.368 t(n=40,r=0 .851, P＜0.01), respectively. The discus sion suggested that acceleration of protein catabolism in the fish body with inc reasing temperature resulted in increment of the rate of ammonia-N excretion. |
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| Keywords: | fish energetics excretion temperature effect Silurus meridionalis |
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