• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Biology Open >Does air-breathing meet metabolic demands of the juvenile snakehead, Channa argus, in multiple conditions
【24h】

Does air-breathing meet metabolic demands of the juvenile snakehead, Channa argus, in multiple conditions

机译：空气呼吸在多种情况下是否满足幼蛇头（Channa argus）的代谢需求

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The objective of this study was to examine how the respiratory metabolism of the snakehead?Channa argus?changed when it shifted from breathing water to breathing air, and how increased metabolic demands caused by temperature, feeding, and exhaustive exercise affect its survival in air. The results demonstrated that the oxygen consumption rate (MO2) of the snakehead was lower for aerial respiration than aquatic respiration by 12.1, 24.5 and 20.4% at 20, 25, and 30°C, respectively. Survival time was significantly shortened with increasing temperature and was negatively correlated with the resting MO2?in air (MO2Air). No obvious feeding metabolic response was observed in the snakeheads fed at 1% and 3% body mass levels while breathing air. The maximum MO2Air?of the snakehead after exhaustive exercise was significantly higher than the resting MO2Air?of the control group. The results suggest that the snakehead could survive out of water by breathing air for varying lengths of time, depending on ambient temperature and metabolic demand. Additionally, some degree of metabolic depression occurs in the snakehead when breathing air. The metabolic demand associated with exercise in the snakehead, but not that associated with feeding, can be supported by its capacity for breathing air to some extent.
机译：这项研究的目的是研究蛇头（Channa argus）从呼吸水转变为呼吸空气时其呼吸代谢如何变化，以及温度，进食和力竭运动引起的新陈代谢需求增加如何影响其在空气中的存活。结果表明，在20、25和30°C下，空中呼吸的蛇头的耗氧率（MO2）分别比水生呼吸低12.1％，24.5％和20.4％。随着温度的升高，生存时间明显缩短，并且与空气中静止的MO2？（MO2Air）呈负相关。在呼吸空气时，以1％和3％的体重水平喂养的蛇头没有观察到明显的喂养代谢反应。力竭运动后，蛇头的最大MO2Air？明显高于对照组的静息MO2Air?。结果表明，取决于环境温度和新陈代谢的需求，蛇头可以通过呼吸空气不同的时间而在水中生存。另外，呼吸空气时，蛇头会发生某种程度的代谢抑制。其在一定程度上呼吸空气的能力可以支持与蛇头运动有关的代谢需求，但与进食无关。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号