摘要
溶解氧(dissolved oxygen,DO)是影响鱼类生存和生长的重要环境因子,鱼类具有一定的适应溶解氧波动的能力,但长期的低氧胁迫则会导致鱼类生理状态和器官形态结构变化,给鱼类造成损伤甚至死亡。低氧胁迫已成为鱼类主要的环境胁迫因素之一:养殖水体低氧是影响养殖生产品质安全的重要因素;近海海域水环境的低氧是阻碍水生生态系统稳定的关键因素;此外,鱼类长距离保活运输过程中也经常会面临低氧胁迫。分别从低氧胁迫对鱼类行为、生长、繁育和生理影响以及基因表达调控对低氧胁迫的响应(低氧响应的分子机理)等方面的研究进展进行了概述,并总结了目前应对鱼类低氧胁迫的营养调控方案,以期为鱼类低氧胁迫相关研究和探究有效的应激解决方法提供参考。
Dissolved oxygen(DO)is an important environmental factor that directly influences the survival and growth of fish.Fish has the ability of adapting to dissolved oxygen changes in water in a certain extent,but chronic hypoxia stress can lead to their physical and morphological changes,cause injury and even death to fish.Hypoxia has become one of the major environmental stress factors to fish.Hypoxia in aquaculture water is a key factor that affects the quality and safety of cultured species.Hypoxia in coastal waters is a critical element that hinders the stability of the aquatic ecosystem.Moreover,hypoxia stress is also a challenge in long-distance transportation of live fish.The paper reviewed the effects of hypoxia on the behavior,growth,propagation and physiology of fish.Fish shows obvious behavior changes under hypoxia stress,such as avoiding hypoxia area,reducing respiratory rate,slowing down swimming speed and taking less food.Hypoxia shows negative effects on the growth and propagation of fish and can disturb the balance of normal physiological and biochemical mechanisms of fish.Advances in fish genetic expression regulation in response to hypoxia were studied from the molecular level.More and more hypoxia stress related genes and regulatory pathways had been identified,which provided solid theoretical basis for study on the anti-hypoxia ability of fish.Current studies of fish nutritional regulation and response under hypoxia stress were summarized to provide references for research on fish hypoxia stress and efficient stress solutions.
作者
阮雯
纪炜炜
郑亮
岳冬冬
方海
RUAN Wen;JI Weiwei;ZHENG Liang;YUE Dongdong;FANG Hai(East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, China)
出处
《海洋渔业》
CSCD
北大核心
2020年第6期751-761,共11页
Marine Fisheries
关键词
鱼类
低氧胁迫
营养调控
fish
hypoxia
nutritional regulation
