圆口铜鱼呼吸代谢的温度响应特征研究  

Study on the temperature response characteristics of respiration and metabolism of Coreius guichenoti

作　　者：胡晓娜 吴兴兵[2] 朱永久[2] 朱挺兵[2] 李学梅[2] 杨德国[1,2] HU Xiaona;WU Xingbing;ZHU Yongjiu;ZHU Tingbing;LI Xuemei;YANG Deguo(College of Fisheries and Life Science,Shanghai Ocean University,Shanghai 201306,China;Yangtze River Fisheries Research Institute,Chinese Academy of Fisheries Science/Key Laboratory of Freshwater Biodiversity Conservation,Ministry of Agriculture and Rural Affairs,Wuhan 430223,China)

机构地区：[1]上海海洋大学水产与生命学院,上海201306 [2]中国水产科学研究院长江水产研究所,农业农村部淡水生物多样性保护重点实验室,武汉430223

出　　处：《淡水渔业》2024年第1期86-92,共7页Freshwater Fisheries

基　　金：财政部和农业农村部国家现代农业产业技术体系专项资金(CARS-46);中国水产科学研究院中央级公益性科研院所基本科研业务费专项资金(2023TD61);中国长江三峡集团有限公司科研项目(202003033)。

摘　　要：为探讨圆口铜鱼呼吸代谢的温度响应特征,研究了不同水温(10、15、20、25、30℃)下圆口铜鱼(Coreius guichenoti)耗氧率、排氨率、氧氮比以及不同水温范围温度系数(Q_(10)),测定了不同水温下血红蛋白、血糖、乳酸、皮质醇等血液生理生化指标。研究结果显示:圆口铜鱼耗氧率、排氨率和血红蛋白含量均随水温升高呈现先上升后下降趋势。耗氧率、排氨率的Q_(10)值均在25~30℃水温范围时显著下降;10℃组氧氮比值显著低于其他组,除10℃组外其他各组间无显著差异;血糖随水温升高整体呈现下降趋势,除25℃组外,10℃组显著高于其他各组;乳酸含量随水温升高呈现先升高后下降趋势;皮质醇含量呈现先下降后升高的趋势。此外,水温对圆口铜鱼耗氧率昼夜变化具显著影响。15~25℃范围内,圆口铜鱼耗氧率昼夜变化类型为夜间大于白天类型,而10、30℃组属于昼夜差异不明显类型。15~25℃组耗氧率整体均高于10、30℃组。综上所述,水温15~25℃时,圆口铜鱼呼吸代谢水平较稳定。The oxygen consumption rate,the ammonia excretion rate and the oxygen-nitrogen ratio of Coreius guichenoti under different water temperature(10,15,20,25,30℃)as well as the temperature coefficient(Q_(10))in different range of water temperature were studied to discuss the temperature response characteristic of the respiratory metabolism of the C.guichenoti.The blood physiological and biochemical parameters such as hemoglobin,glucose,lactic acid and cortisol under different water temperature are determined.The results showed that the oxygen consumption rate,ammonia excretion rate and hemoglobin content of the C.guichenoti increased first and then decreased with the water temperature increase.The Q_(10)values of oxygen consumption rate and ammonia excretion rate decreased significantly in the range of 25~30℃.The oxygen-nitrogen ratio in 10℃group was significantly lower than that in other groups,but there was no significant difference among all groups except 10℃group.The serum glucose in the 10℃group was significantly higher than that in the other groups except the 25℃group.With the increase of water temperature,lactic acid content firstly increased and then decreased,and cortisol content firstly decreased and then increased.In addition,water temperature significantly affeceing the diurnal variation of oxygen consumption rate.In the range of 15~25℃,the diurnal variation of the oxygen consumption rate was more significant in the night than in the day.In contrast,the daily difference was not apparent in the 10℃and 30℃groups.The overall oxygen consumption rate of 15~25℃groups was higher than that of 10 and 30℃group.In conclusion,the respiratory metabolism of C.guichenoti was relatively stable in the water temperature range of 15~25℃.

关 键 词：水温 圆口铜鱼(Coreius guichenoti) 呼吸代谢 血液指标 

分 类 号：S965[农业科学—水产养殖]