Effects of Acute High-Temperature Stress on Physical Responses of Yellowfin Tuna (Thunnus albacares)
文献类型： 外文期刊
作者： Liu, Hongyan 1 ; Fu, Zhengyi 2 ; Yu, Gang 2 ; Ma, Zhenhua 1 ; Zong, Humin 5 ;
作者机构： 1.Shanghai Ocean Univ, Coll Fisheries & Life, Shanghai 201306, Peoples R China
2.Sanya Trop Fisheries Res Inst, Key Lab Efficient Utilizat & Proc Marine Fishery R, Sanya 572018, Peoples R China
3.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Guangzhou 510300, Peoples R China
4.Flinders Univ S Australia, Coll Sci & Engn, Adelaide 5001, Australia
5.Natl Marine Environm Ctr, Dalian 116023, Peoples R China
关键词： biochemical indexes; metabolism; serum ionic concentration; immune; oxidative stress parameters
期刊名称：JOURNAL OF MARINE SCIENCE AND ENGINEERING （ 影响因子：2.744； 五年影响因子：2.727 ）
ISSN：
年卷期： 2022 年 10 卷 12 期
页码：
收录情况： SCI
摘要： To understand the physiological reactions of juvenile yellowfin tuna (Thunnus albacares) under acute high-temperature stress, this study measured the changes in biochemical indexes of serum, liver, gill, and muscle of yellowfin tuna under acute high-temperature stress (HT, 34 degrees C) and a control group (28 degrees C) for 0 h and 6 h, 24 h and 48 h. The rising speed of water temperature in the HT group was 2 degrees C/h and the timing started when the temperature reached 34 degrees C. In the HT group, there was no significant difference between the four adjacent times in cortisol and lactic acid concentration. Serum triglyceride, cholesterol, and alkaline phosphatase concentration were significantly different from the four adjacent times. The superoxide dismutase (SOD) activity in the liver and gills increased at 6 h and 24 h, and the gills and liver had antioxidant reactions in a short time. The malondialdehyde (MDA) concentration in the gills changed significantly at 6 h, while that in the liver did not change significantly. The gills were more sensitive to temperature stress than the liver and muscle. Acute high-temperature stress affected yellowfin tuna's antioxidant enzymes and metabolic indexes, resulting negative trend in physiological indexes, indicating that yellowfin tuna juveniles are susceptible to elevated temperature.
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