Cristiano Campos Mattioli, Gisele Cristina Favero, Luanna do Carmo Neves, Hugo Napoleão Pereira da Silva, Bernardo Baldisserotto, Ronald Kennedy Luz
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引用次数: 0
摘要
本研究考察了巨像幼鱼在缺氧（0.92±0.37 mg L - 1 O₂）72小时后再氧合对组织特异性氧化应激的反应。在缺氧和恢复期间，肝脏显示还原型谷胱甘肽（GSH）增加，而脑GSH保持稳定，表明不同的抗氧化调节。在缺氧期间，肝脏的脂质过氧化（TBARS）减少，但大脑的脂质过氧化（TBARS）增加，表明组织特异性易感性。缺氧触发进食停止，但应激后48 h内完全恢复。这些发现强调了C. macropomum对缺氧的适应能力，通过有针对性的代谢调节可以指导水产养殖策略，如耐压种群选择或优化恢复方案，以提高氧变量系统中的生产力。
Oxidative stress biomarker responses in juvenile Colossoma macropomum during hypoxia and reoxygenation
This study examined tissue-specific oxidative stress responses in juvenile Colossoma macropomum during 72 h of hypoxia (0.92 ± 0.37 mg L⁻1 O₂) followed by reoxygenation. The liver showed increased reduced glutathione (GSH) during hypoxia and recovery, while brain GSH remained stable, indicating differential antioxidant regulation. Lipid peroxidation (TBARS) decreased in the liver but increased in the brain during hypoxia, suggesting tissue-specific vulnerability. Hypoxia triggered feeding cessation, but full recovery occurred within 48 h post-stress. These findings underscore the resilience of C. macropomum to hypoxia, with targeted metabolic adjustments that could guide aquaculture strategies, such as stress-tolerant stock selection or optimized recovery protocols, to enhance productivity in oxygen-variable systems.
期刊介绍：
Aquaculture International is an international journal publishing original research papers, short communications, technical notes and review papers on all aspects of aquaculture.
The Journal covers topics such as the biology, physiology, pathology and genetics of cultured fish, crustaceans, molluscs and plants, especially new species; water quality of supply systems, fluctuations in water quality within farms and the environmental impacts of aquacultural operations; nutrition, feeding and stocking practices, especially as they affect the health and growth rates of cultured species; sustainable production techniques; bioengineering studies on the design and management of offshore and land-based systems; the improvement of quality and marketing of farmed products; sociological and societal impacts of aquaculture, and more.
This is the official Journal of the European Aquaculture Society.
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