温度和摄食对南方鲇能量代谢特征和低氧耐受的影响  

Effects of Temperature and Feeding on Energy Metabolism Trait and Hypoxia Tolerance of Southern Catfish

作　　者：史函颖 杨洁 谭淦 郭正浩 庞旭 SHI Hanying;YANG Jie;TAN Gan;GUO Zhenghao;PANG Xu(College of Fisheries, Southwest University;Key Laboratory of Freshwater Fish Reproduction and Development,Education of Ministry,Southwest University,Chongqing 400715,China)

机构地区：[1]西南大学水产学院 [2]西南大学淡水鱼类资源与生殖发育教育部重点实验室,重庆400715

出　　处：《重庆师范大学学报（自然科学版）》2023年第6期32-37,共6页Journal of Chongqing Normal University:Natural Science

基　　金：国家自然科学基金青年科学基金项目(No.31702020);重庆市自然科学基金项目(No.cstc2020jcyj-msxmX0479)。

摘　　要：为考察研究温度和摄食对鱼类能量代谢特征和低氧耐受的影响,以南方鲇(Silurus meridionalis)幼鱼为对象,在15、20、25和30℃条件下,分别测定禁食组和摄食组实验鱼的日常代谢率(RMR)、临界氧压(COP)和失去平衡点(LOE)。结果显示:1)温度对南方鲇的RMR、COP和LOE均有统计学意义上的影响(p<0.05)。2)摄食对南方鲇的RMR、COP均有统计学意义上的影响(p<0.05);在20、25、30℃条件下,摄食组的RMR与空腹组的RMR相比有统计学意义上的提升(p<0.05);在15、20℃条件下,摄食组的COP与空腹组的COP相比有统计学意义上的提升(p<0.05)。3)摄食对南方鲇的LOE的影响无统计学意义。上述结果提示温度上升以及在较低温度下摄食将削弱南方鲇的低氧耐受能力,而在较高温度下摄食对南方鲇的低氧耐受能力有一定补偿作用。The aim of the present study was to investigate the effects of temperature and feeding on the energy metabolism trait and hypoxia tolerance of fish.The routine metabolic rate(RMR),critical oxygen pressure(COP),and loss of equilibrium(LOE) of the control group(fasting group) and the feeding group of southern catfish were measured at 15,20,25,and 30 ℃,respectively.Temperature has a significant impact on RMR,COP,and LOE,and these parameters significantly increase with increasing temperature(p<0.05).Feeding has a significant impact on RMR and COP.Indicated that increasing temperature would weaken the hypoxia tolerance of southern catfish,and feeding would weaken the hypoxia tolerance of this species at low temperature.As well as,feeding had some compensatory effect on hypoxia tolerance at high temperature in this species,and therefore might be related to factors such as energy metabolism characteristic,physiological regulation capability and body acid-base balance at different temperatures.

关 键 词：淡水鱼类 临界氧压 日常代谢率 失去平衡点 南方鲇 温度 摄食 

分 类 号：Q591.4[生物学—生物化学] S965.116[农业科学—水产养殖]