| 温度对细鳞鲑幼鱼最大代谢率和代谢范围的影响 |
| Effects of Temperature on Maximum Metabolic Rate and Metabolic Scope of Juvenile Manchurian Trout, Brachymystax lenok (Pallas) |
| 投稿时间：2014-01-19 修订日期：2014-04-20 |
| DOI： |
| 中文关键词:细鳞鲑 代谢特征 临界游泳速度 |
| 英文关键词:Brachymystax lenok (Pallas) metabolic characteristics critical swimming speed |
| 基金项目:“十二•五”农村领域国家科技计划（2012BAD26B05）和中央级公益性科研院所基本科研业务费专项(HSY201312)资助 |
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| 中文摘要: |
| 为了探究温度对细鳞鲑（Brachymystax lenok）幼鱼的代谢特征和有氧运动能力的影响，在不同温度( 4℃、8℃、12℃、16℃、20℃)下测定了实验鱼的静止代谢率(RMR)、有氧运动过程中的最大代谢率(MMR)以及能量代谢范围(MS)和临界游泳速度（UCrit）。结果表明，随着温度的上升，RMR和MMR均显著提高(P<0.05)，各温度下的RMR和MMR分别较4℃条件的提高了62%（8℃）、165%（12℃）、390%（16℃）、411%（20℃）和3%（8℃）、34%（12℃）、111%（16℃）、115%（20℃）；MS随水温的升高呈现下降的趋势，且4℃条件具有最大的代谢范围。不同温度条件下UCrit存在显著性差异，但随着温度升高未表现出明显的变化规律。有氧运动过程中，不同流速下测定的MMR多出现在70%UCrit附近，可能是由于无氧代谢过早启动，使得机体乳酸积累过多进，降低了有氧代谢水平。
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| 英文摘要: |
| This study examined the effects of water temperature on the metabolic characteristics and aerobic exercise capacity of juvenile manchurian trout, Brachymystax lenok (Pallas). The resting metabolic rate (RMR)，maximum metabolic rate (MMR), metabolic scope（MS）and critical swimming speed (UCrit) of juveniles were measured at different temperature (4, 8, 12, 16, 20℃). The results showed that both the RMR and the MMR increased significantly with the increasing of water temperature (P<0.05). Compared with test group at 4℃, the RMR for 8℃, 12℃, 16℃ and 20℃ increased by 62%, 165%, 390%, 411%，respectively, and the MMR increased by 3%, 34%, 111%, 115%, respectively. However, the MS decreased with the increasing of water temperature with the highest MS occurring at 4℃. UCrit was significantly affected by water temperature (P<0.05), but the variations of UCrit didn’t follow certain pattern with temperature. In the test of aerobic exercise, the MMR for each temperature level occurred at the swimming speed of 70% UCrit, probably due to the start of anaerobic metabolism, which caused excessive creatine in body, consequently hindered the aerobic metabolism. |
| 徐革锋,韩英,刘洋,牟振波,尹家胜.2014.温度对细鳞鲑幼鱼最大代谢率和代谢范围的影响[J].水生态学杂志,35(3):56-60. |
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