Ocean acidification alters the acute stress response of a marine fish

Servili, Arianna; Lévêque, Etienne; Devergne, Jimmy; Lebigre, Christophe; Roussel, Sabine; Mazurais, David; Zambonino-Infante, J.L.

doi:10.1016/j.scitotenv.2022.159804

Cited by 12 publications

(4 citation statements)

References 80 publications

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“…Cortisol and glucose are reliable indicators of fish stress which provide a reflection of the severity and duration of the stress response [ 33 ]. In teleost fish, the physiological stress response is driven by the activation of two hormonal axes: the brain–sympathetic–chromaffin cells (BSC) axis and the HPI axis [ 34 ]. The BSC axis executes the stress response through the rapid rise in plasma catecholamines especially epinephrine and norepinephrine by chromaffin cells which leads to the oxidation of glucose in the plasma and increased energy demand due to stress.…”

Section: Discussionmentioning

confidence: 99%

Interactive Effect of Dietary Gamma-Aminobutyric Acid (GABA) and Water Temperature on Growth Performance, Blood Plasma Indices, Heat Shock Proteins and GABAergic Gene Expression in Juvenile Olive Flounder Paralichthys olivaceus

et al. 2023

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Gamma-aminobutyric acid (GABA) is an important inhibitory neurotransmitter in the central nervous system of living organisms and has the ability to reduce the magnitude of stress in humans and animals. In this study, we evaluated the supplemental effects of GABA on normal and high water temperature based on growth, blood plasma composition as well as heat shock proteins and GABA-related gene expression in juvenile olive flounder. For this, a 2 × 2 factorial design of experiment was employed to investigate the dietary effects of GABA at 0 mg/kg of diet (GABA0 diet) and 200 mg/kg of diet (GABA200 diet) in water temperatures of 20 ± 1 °C (normal temperature) and 27 ± 1 °C (high temperature) for 28 days. A total of 180 fish with an average initial weight of 40.1 ± 0.4 g (mean ± SD) were distributed into 12 tanks, of which, each tank contained 15 fish based on the 4 dietary treatment groups in triplicate. At the end of the feeding trial, the results demonstrated that both temperature and GABA had significant effects on the growth performance of the fish. However, fish fed the GABA200 diet had a significantly higher final body weight, weight gain and specific growth rate as well as a significantly lower feed conversion ratio than the fish fed the GABA0 diet at the high water temperature. A significant interactive effect of water temperature and GABA was observed on the growth performance of olive flounder based on the two-way analysis of variance. The plasma GABA levels in fish were increased in a dose-dependent manner at normal or high water temperatures, whereas cortisol and glucose levels were decreased in fish fed GABA-supplemented diets under temperature stress. The GABA-related mRNA expression in the brains of the fish such as GABA type A receptor-associated protein (Gabarap), GABA type B receptor 1 (Gabbr1) and glutamate decarboxylase 1 (Gad1) were not significantly affected by GABA-supplemented diets under normal or temperature stressed conditions. On the other hand, the mRNA expression of heat shock proteins (hsp) in the livers of the fish, such as hsp70 and hsp90, were unchanged in fish fed the GABA diets compared to the control diet at the high water temperature. Collectively, the present study showed that dietary supplementation with GABA could enhance growth performance, and improve the feed utilization, plasma biochemical parameters and heat shock proteins and GABA-related gene expression under the stress of high water temperatures in juvenile olive flounder.

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Section: Discussionmentioning

confidence: 99%

Interactive Effect of Dietary Gamma-Aminobutyric Acid (GABA) and Water Temperature on Growth Performance, Blood Plasma Indices, Heat Shock Proteins and GABAergic Gene Expression in Juvenile Olive Flounder Paralichthys olivaceus

et al. 2023

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“…To date, there is no data available on how appetite-regulating hormones might be involved in these responses. However, it has been suggested that the behavioural changes observed in teleosts at high CO 2 might be caused in part by reductions in the contents of γ-aminobutyric acid (GABA), DA and 5-HT in the brain [45,46].…”

Section: Effects Of Environmental Factors On Feeding (A) Temperaturementioning

confidence: 99%

The effects of environmental changes on the endocrine regulation of feeding in fishes

Volkoff

2024

Phil. Trans. R. Soc. B

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Fishes are exposed to natural and anthropogenic changes in their environment, which can have major effects on their behaviour and their physiology, including feeding behaviour, food intake and digestive processes. These alterations are owing to the direct action of environmental physico-chemical parameters (i.e. temperature, pH, turbidity) on feeding physiology but can also be a consequence of variations in food availability. Food intake is ultimately regulated by feeding centres of the brain, which receive and process information from endocrine signals from both brain and peripheral tissues such as the gastrointestinal tract. These endocrine signals stimulate or inhibit food intake, and interact with each other to maintain energy homeostasis. Changes in environmental conditions might change feeding habits and rates, thus affecting levels of energy stores, and the expression of endocrine appetite regulators. This review provides an overview of how environmental changes and food availability could affect feeding and these endocrine networks in fishes. This article is part of the theme issue ‘Endocrine responses to environmental variation: conceptual approaches and recent developments’.

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“…Exposure to these conditions can severely impact marine organisms as the acclimation to a suboptimal environment requires physiological adaptive responses that are energetically costly. Consequently, fish experience environmental stress, which may impact them at the biological and physiological levels ( 336 ). A comparison of the effects of OA on the growth and development of the early life stages of marine fish indicates that these are species-specific, and thus, generalizing the impact of climate-driven ocean acidification is not warranted.…”

Section: Effects Of Global Climate Change Factors On Growth and Feedi...mentioning

confidence: 99%

The effect of environmental stressors on growth in fish and its endocrine control

Canosa

Bertucci

2023

Front. Endocrinol.

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Fish body growth is a trait of major importance for individual survival and reproduction. It has implications in population, ecology, and evolution. Somatic growth is controlled by the GH/IGF endocrine axis and is influenced by nutrition, feeding, and reproductive-regulating hormones as well as abiotic factors such as temperature, oxygen levels, and salinity. Global climate change and anthropogenic pollutants will modify environmental conditions affecting directly or indirectly fish growth performance. In the present review, we offer an overview of somatic growth and its interplay with the feeding regulatory axis and summarize the effects of global warming and the main anthropogenic pollutants on these endocrine axes.

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Ocean acidification alters the acute stress response of a marine fish

Cited by 12 publications

References 80 publications

Interactive Effect of Dietary Gamma-Aminobutyric Acid (GABA) and Water Temperature on Growth Performance, Blood Plasma Indices, Heat Shock Proteins and GABAergic Gene Expression in Juvenile Olive Flounder Paralichthys olivaceus

Interactive Effect of Dietary Gamma-Aminobutyric Acid (GABA) and Water Temperature on Growth Performance, Blood Plasma Indices, Heat Shock Proteins and GABAergic Gene Expression in Juvenile Olive Flounder Paralichthys olivaceus

The effects of environmental changes on the endocrine regulation of feeding in fishes

The effect of environmental stressors on growth in fish and its endocrine control

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