Antioxidant and Metabolic Response to Acute Acidification Stress of Juvenile Yellowfin Tuna (Thunnus albacares)
文献类型： 外文期刊
作者： Wang, Xiaoyan 1 ; Yang, Rui 2 ; Fu, Zhengyi 2 ; Zhao, Lei 7 ; Ma, Zhenhua 2 ;
作者机构： 1.Dalian Ocean Univ, Coll Fisheries & Life Sci, Dalian 116023, 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.Hainan Engn Res Ctr Deep Sea Aquaculture & Proc, Sanya 572018, Peoples R China
5.Int Joint Res Ctr Conservat & Applicat Fishery Res, Sanya 572018, Peoples R China
6.Flinders Univ S Australia, Coll Sci & Engn, Adelaide 5001, Australia
7.Yazhou Bay Agr & Aquaculture Co Ltd, Sanya 572025, Peoples R China
关键词： environmental stress; antioxidant enzymes; metabolic enzymes; serum biochemistry index; liver histology
期刊名称：JOURNAL OF MARINE SCIENCE AND ENGINEERING （ 影响因子：2.7； 五年影响因子：2.8 ）
ISSN：
年卷期： 2024 年 12 卷 6 期
页码：
收录情况： SCI
摘要： This study aimed to explore the impact of acute acidification on the antioxidant, metabolic performance, and liver histology of juvenile yellowfin tuna. The experiment subjected juvenile yellowfin tuna to a pH gradient environment of 8.1, 7.6, 7.1, and 6.6 for 48 h. The findings indicate that a seawater pH of 7.1 significantly impacts the antioxidant and metabolic systems of the juvenile yellowfin tuna in comparison to the control group. At pH 7.1, there were observed increases in glutathione reductase (GR), total antioxidant capacity (T-AOC), lactate dehydrogenase (LDH), hexokinase (HK), pyruvate kinase (PK), sodium-potassium ATPase (Na+K+-ATP), and calcium-magnesium ATPase (Ca2+Mg2+-ATP). Conversely, low-density lipoprotein cholesterol (LDL-C), high-density lipoprotein cholesterol (HDL-C), and triglycerides (TGs) were not significantly different across the treatment groups. However, an increase in transaminases at pH 7.1 suggested potential liver damage, which was further supported by observed structural liver tissue degeneration and hepatocyte vacuolation. In conclusion, under conditions of acute acidification stress, there is a decrease in antioxidant capacity and a suppression of metabolic levels in juvenile yellowfin tuna, leading to oxidative damage. This study lays the foundation for an in-depth understanding of the response mechanisms of juvenile yellowfin tuna in response to seawater acidification as well as healthy tuna farming in the broader context of seawater acidification.
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