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Mao Y, Hong K, Li L, Nam IK, Kim SH, Choe SK. Mitochondrial Fission Is Involved in Heat Resistance in Zebrafish. Zebrafish 2024. [PMID: 39007173 DOI: 10.1089/zeb.2024.0128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/16/2024] Open
Abstract
Global warming and extreme weather events pose a significant threat to global biodiversity, with rising water temperatures exerting a profound influence on fish conservation and fishery development. In this study, we used zebrafish as a model organism to explore the impact of a heat acclimation period on their survival rates. The results demonstrated that a 2-month heat acclimation period almost completely mitigated heat stress-induced mortality in zebrafish. Subsequent analysis of the surviving zebrafish revealed a predominance of hepatic mitochondria in a fission state. Remarkably, a short-term fasting regimen, which induced hepatic mitochondrial fission, mirrored the outcomes of the protective effect of heat acclimation and augmented animal survival under heat stress. Conversely, treatment with a mitochondrial fission inhibitor within the fasting group attenuated the elevated survival rate. Furthermore, zebrafish embryos subjected to brief heat acclimation also exhibited increased heat resistance, a trait diminished by a chemical intervention inhibiting mitochondrial fission. This suggests a shared mechanism for heat resistance between embryos and adult zebrafish. These findings underscore the potential use of inducing mitochondrial fission to enhance heat resistance in zebrafish, offering promise for fish biodiversity conservation in the face of global warming.
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Affiliation(s)
- Yousheng Mao
- Department of Medicine, Graduate School, Wonkwang University, Iksan, Republic of Korea
| | - KwangHeum Hong
- Department of Medicine, Graduate School, Wonkwang University, Iksan, Republic of Korea
- Sarcopenia Total Solution Center, Wonkwang University, Iksan, Republic of Korea
| | - Li Li
- Department of Medicine, Graduate School, Wonkwang University, Iksan, Republic of Korea
| | - In-Koo Nam
- Sarcopenia Total Solution Center, Wonkwang University, Iksan, Republic of Korea
| | - Seok-Hyung Kim
- Sarcopenia Total Solution Center, Wonkwang University, Iksan, Republic of Korea
| | - Seong-Kyu Choe
- Department of Medicine, Graduate School, Wonkwang University, Iksan, Republic of Korea
- Sarcopenia Total Solution Center, Wonkwang University, Iksan, Republic of Korea
- Department of Microbiology, Wonkwang University School of Medicine, Iksan, Republic of Korea
- Institute of Wonkwang Medical Science, Wonkwang University, Iksan, Republic of Korea
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Tian Y, Li H, Zhang D, Wang C, Hao R, Ru X, Hu Q, Huang Y, Zhu C. Effect of marine heatwaves on juvenile greater amberjack (Seriola dumerili). MARINE ENVIRONMENTAL RESEARCH 2024; 193:106302. [PMID: 38113590 DOI: 10.1016/j.marenvres.2023.106302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 12/04/2023] [Accepted: 12/10/2023] [Indexed: 12/21/2023]
Abstract
Marine heatwaves (MHWs) have increased in frequency, intensity, and duration in recent years causing significant impacts on marine organisms and fisheries. This study explores the physiological changes of juvenile greater amberjacks (Seriola dumerili) that cope with MHWs. Results showed that physiological parameters were significantly affected by the intensity, duration of MHWs or interaction of two factors (P < 0.05). Repeated MHWs in which water temperatures were increased (24 °C to 28 °C and 32 °C) resulted in changes in enzyme activity levels (catalase (CAT), superoxide dismutase (SOD), and glutathione (GSH)), as well as the level of malondialdehyde (MDA) for antioxidant defense, immune function (acid phosphatase (ACP), alkaline phosphatase (ALP), and lysozyme (LYZ)), and energy metabolism (including triglycerides (TG), glucose (GLU), aspartate aminotransferase (GOT), alanine aminotransferase (ALT), lactate dehydrogenase (LDH), and succinate dehydrogenase (SDH)). The activities of enzymes, including those associated with antioxidant defense, immune function, and energy metabolism, changed significantly in relation to short-term MHWs, indicating a thermal stress response. When S. dumerili were exposed to repeated-MHWs, thermal stress responses increased at 28 °C (T28) and decreased at 32 °C (T32). These results exhibited the inability of S. dumerili to acclimate to severe thermal stress from MHWs. This study examined S. dumerili responses to MHWs and assessed the physiological adaptation of juvenile greater amberjacks to MHWs.
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Affiliation(s)
- Yali Tian
- Fisheries College, Guangdong Ocean University, Zhanjiang, 524088, China; Development and Research Center for Biological Marine Resources, Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang), Zhanjiang, 524006, China
| | - Hang Li
- Development and Research Center for Biological Marine Resources, Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang), Zhanjiang, 524006, China
| | - Dongying Zhang
- Development and Research Center for Biological Marine Resources, Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang), Zhanjiang, 524006, China
| | - Chen Wang
- Development and Research Center for Biological Marine Resources, Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang), Zhanjiang, 524006, China
| | - Ruijuan Hao
- Development and Research Center for Biological Marine Resources, Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang), Zhanjiang, 524006, China.
| | - Xiaoying Ru
- Development and Research Center for Biological Marine Resources, Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang), Zhanjiang, 524006, China
| | - Qin Hu
- Development and Research Center for Biological Marine Resources, Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang), Zhanjiang, 524006, China
| | - Yang Huang
- Fisheries College, Guangdong Ocean University, Zhanjiang, 524088, China; Development and Research Center for Biological Marine Resources, Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang), Zhanjiang, 524006, China; Guangdong Research Center on Reproductive Control and Breeding Technology of Indigenous Valuable Fish Species, Guangdong Ocean University, Zhanjiang, 524088, China; Guangdong Provincial Engineering Laboratory for Mariculture Organism Breeding, Zhanjiang, 524088, China
| | - Chunhua Zhu
- Fisheries College, Guangdong Ocean University, Zhanjiang, 524088, China; Development and Research Center for Biological Marine Resources, Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang), Zhanjiang, 524006, China; Guangdong Research Center on Reproductive Control and Breeding Technology of Indigenous Valuable Fish Species, Guangdong Ocean University, Zhanjiang, 524088, China; Guangdong Provincial Engineering Laboratory for Mariculture Organism Breeding, Zhanjiang, 524088, China.
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