Risks to the stability of coral reefs in the South China Sea: An integrated biomarker approach to assess the physiological responses of Trochus niloticus to ocean acidification and warming

Zhang, Tianyu; Qu, Yi; Zhang, Qianqian; Tang, Jia; Cao, Ruibing; Dong, Zhibao; Wang, Qing; Zhao, Jianmin

doi:10.1016/j.scitotenv.2021.146876

Cited by 25 publications

(11 citation statements)

References 107 publications

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“…Deleterious effects at 34.5 • C for corals and 42 • C for seagrasses and macroalgae were manifested as a marked decline of all three biomarkers, while sublethal effects (32 • C in the corals and 37 • C in the seagrasses and macroalgae) were largely driven by growth rate and chlorophyll content for most of the tested species. These results, which support the suggestions made by previous studies (Madeira et al, 2018;Dias et al, 2020;Marques et al, 2020;Zhang et al, 2021), highlight the importance of using multiple biomarkers across the biological organizations and inclusion of the biomarkers at the organismic level.…”

Section: Integrated Biomarker Response and Application For Monitoring And Management Effortssupporting

confidence: 90%

“…The IBR index was adopted to quantify and visualize an overall integrated stress effect of warming on all shallowwater marine organisms. This tool has been successfully applied in assessing the health of corals, reef calcifiers, and marine invertebrates exposed to climate change related stressors, including warming (Madeira et al, 2018;Dias et al, 2020;Marques et al, 2020;Zhang et al, 2021); however, its application in seagrass and macroalgal research is yet to be explored. It is established that various biomarkers at different biological organization levels, ranging from cellular to organismal levels, are affected by increasing temperatures (George et al, 2018;Madeira et al, 2018;Savva et al, 2018;Dias et al, 2020).…”

Section: Integrated Biomarker Response and Application For Monitoring And Management Effortsmentioning

confidence: 99%

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Experimental Assessment of Vulnerability to Warming in Tropical Shallow-Water Marine Organisms

et al. 2021

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Tropical shallow-water habitats represent the marine environments with the greatest biodiversity; however, these habitats are the most vulnerable to climate warming. Corals, seagrasses, and macroalgae play a crucial role in the structure, functions, and processes of the coastal ecosystems. Understanding their growth and physiological responses to elevated temperature and interspecific sensitivity is a necessary step to predict the fate of future coastal community. Six species representatives, including Pocillopora acuta, Porites lutea, Halophila ovalis, Thalassia hemprichii, Padina boryana, and Ulva intestinalis, collected from Phuket, Thailand, were subjected to stress manipulation for 5 days. Corals were tested at 27, 29.5, 32, and 34.5°C, while seagrasses and macroalgae were tested at 27, 32, 37, and 42°C. After the stress period, the species were allowed to recover for 5 days at 27°C for corals and 32°C for seagrasses and macroalgae. Non-destructive evaluation of photosynthetic parameters (Fv/Fm, Fv/F0, ϕPSII and rapid light curves) was carried out on days 0, 3, 5, 6, 8, and 10. Chlorophyll contents and growth rates were quantified at the end of stress, and recovery periods. An integrated biomarker response (IBR) approach was adopted to integrate the candidate responses (Fv/Fm, chlorophyll content, and growth rate) and quantify the overall temperature effects. Elevated temperatures were found to affect photosynthesis, chlorophyll content, and growth rates of all species. Lethal effects were detected at 34.5°C in corals, whereas adverse but recoverable effects were detected at 32°C. Seagrasses and macroalgae displayed a rapid decline in photosynthesis and lethal effects at 42°C. In some species, sublethal stress manifested as slower growth and lower chlorophyll content at 37°C, while photosynthesis remained unaffected. Among all, T. hemprichii displayed the highest thermotolerance. IBR provided evidence that elevated temperature affected the overall performance of all tested species, depending on temperature level. Our findings show a sensitivity that differs among important groups of tropical marine organisms inhabiting the same shallow-water environments and highlights the importance of integrating biomarkers across biological levels to assess their vulnerability to climate warming.

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Section: Integrated Biomarker Response and Application For Monitoring And Management Effortssupporting

confidence: 90%

Section: Integrated Biomarker Response and Application For Monitoring And Management Effortsmentioning

confidence: 99%

Experimental Assessment of Vulnerability to Warming in Tropical Shallow-Water Marine Organisms

et al. 2021

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“…Wang et al [34] reported that acidification increased caspase-3 gene activity in Pacific oyster (Crassostrea gigas) plasma, and Nash and Rahman [35] found that high-temperature conditions (32 • C) increased caspase-3 gene expression and apoptosis in American oyster (Crassostrea virginica). In addition, Zhang et al [36] reported that cell death occurs in the top shell (Trochus niloticus) under low pH and high-temperature conditions (30 • C). These findings are similar to the results of the present study indicating that low pH and low/high water temperature conditions increased the caspase-3 mRNA expression and promoted apoptosis in disk abalone.…”

Section: Discussionmentioning

confidence: 99%

Oxidative Stress and Apoptosis in Disk Abalone (Haliotis discus hannai) Caused by Water Temperature and pH Changes

Kim

Lee

et al. 2023

Antioxidants

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Ocean warming and acidification can induce oxidative stress in marine species, resulting in cellular damage and apoptosis. However, the effects of pH and water temperature conditions on oxidative stress and apoptosis in disk abalone are poorly understood. This study investigated, for the first time, the effects of different water temperatures (15, 20, and 25 °C) and pH levels (7.5 and 8.1) on oxidative stress and apoptosis in disk abalone by estimating levels of H2O2, malondialdehyde (MDA), dismutase (SOD), catalase (CAT), and the apoptosis-related gene caspase-3. We also visually confirmed apoptotic effects of different water temperatures and pH levels via in situ hybridization and terminal deoxynucleotidyl transferase dUTP nick end labeling assays. The levels of H2O2, MDA, SOD, CAT, and caspase-3 increased under low/high water temperature and/or low pH conditions. Expression of the genes was high under high temperature and low pH conditions. Additionally, the apoptotic rate was high under high temperatures and low pH conditions. These results indicate that changes in water temperature and pH conditions individually and in combination trigger oxidative stress in abalone, which can induce cell death. Specifically, high temperatures induce apoptosis by increasing the expression of the apoptosis-related gene caspase-3.

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“…Since OA and warming can cause significant alterations in cellular antioxidant responses (Grilo et al, 2018;Zhang et al, 2021), three parameters related to oxidative stress, i.e. lipid peroxidation, superoxide dismutase (SOD) and catalase, were measured in abalone larvae.…”

Section: Oxidative Stressmentioning

confidence: 99%

Responses of early life stages of European abalone (Haliotis tuberculata) to ocean acidification after parental conditioning: Insights from a transgenerational experiment

Auzoux-Bordenave

Ledoux

Martin

et al. 2022

Marine Environmental Research

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Risks to the stability of coral reefs in the South China Sea: An integrated biomarker approach to assess the physiological responses of Trochus niloticus to ocean acidification and warming

Cited by 25 publications

References 107 publications

Experimental Assessment of Vulnerability to Warming in Tropical Shallow-Water Marine Organisms

Experimental Assessment of Vulnerability to Warming in Tropical Shallow-Water Marine Organisms

Oxidative Stress and Apoptosis in Disk Abalone (Haliotis discus hannai) Caused by Water Temperature and pH Changes

Responses of early life stages of European abalone (Haliotis tuberculata) to ocean acidification after parental conditioning: Insights from a transgenerational experiment

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