Effect of Dissolved Oxygen on Physiological Functions and Mechanism in Fish

Abstract

氧气作为需氧生物生存的必要条件，参与生命体各项生命活动，鱼类作为重要的水生生物，水体溶解氧含量显著影响其呼吸、运动、生长、代谢等生理过程。本文通过对不同溶解氧条件下鱼类的生理生化指标、氧化应激、低氧适应以及低氧应答机制的论述分析，探索鱼类低氧适应和耐低氧机制，为鱼类高效养殖技术的研发提供技术支撑，同时也为鱼类耐低氧新品种的选育提供理论依据。Oxygen is a necessary environmental factor for the survival of aerobic organisms and involved in regulating various life activities during life cycle in vertebrate. Fish is an important aquatic animal, dissolved oxygen significantly affects physiological processes including breathing, swimming, growth performance and metabolism. This review mainly focuses on investigate physiological, biochemical and oxidative stress response of fish under different dissolved oxygen concentration, hypoxia tolerance and acclimatization mechanism. These results contribute to provide technical supporting for the development of high-efficiency fish culture technology, and open a door theoretical basis for the breeding of new cultured fish species resistant to hypoxia.