Muscle-specific gene expression and metabolic enzyme activities in Atlantic salmon Salmo salar L. fry reared under different photoperiod regimes

Churova, M. V.; Shulgina, Natalia S.; Kuritsyn, Anton; Krupnova, M. Yu.; Немова, Н. Н.

doi:10.1016/j.cbpb.2019.110330

Cited by 15 publications

(5 citation statements)

References 49 publications

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“…Plasma cholesterol concentration was not affected, possibly due to the short-term nature of the fasting period, in contrast to more prolonged periods of fasting where differences in plasma cholesterol do occur [3]. LDH activity in plasma was not affected either by fasting or different growth, although it has been established that LDH activity in muscle increases in larger fish [53][54][55][56][57][58]. Although plasma LDH activity was considered as equal among groups, significant differences in plasma glucose and NEFA content between FG and SG imply growth-related divergence in glucose and lipid metabolism.…”

Section: Discussionmentioning

confidence: 94%

Effects of Short-Term Intermittent Fasting on Growth Performance, Fatty Acids Profile, Glycolysis and Cholesterol Synthesis Gene Expression in European Seabass Dicentrarchus labrax

Ntantali,

Malandrakis,

Abbink

et al. 2023

Fishes

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The present study was applied to evaluate the effects of alternate feeding and feed restriction on gene expression, growth, proximate composition and biochemical indices in European seabass, Dicentrarchus labrax. Fish were randomly divided into six indoor tanks with 90 fish per tank in a recirculating aquaculture system. Two feeding strategies were applied, in which the first group was fed daily to satiation and the second was intermittently fed (8 days feeding to satiation–2 days starvation) for 40 days. At the end of the experiment, outlier fish were sorted as fast growers (FG) and slow growers (SG) according to their final body weight. The differential gene expression tested was related to glycolysis (pk, ldha, hk, g3pdh, eno1 and alda), fatty acid metabolism (lpl and acc) and cholesterol synthesis (7dhcr and sqle). In addition, muscle ldha and gpi expressions were positively correlated with fish weight. The concentrations of glucose, triglycerides, cholesterol and non-esterified fatty acids (NEFA) were not affected by the dietary treatments. Glucose and NEFA differed significantly between SG and FG fed groups. Overall, the physiological responses of glucose and fatty acid metabolism in fish, as recorded by gene expression assays, were triggered by minor interventions in feeding rather than the different growth rates. Expression of specific genes and biochemical parameters could be used as potential biomarkers to improve aquaculture practices and benefit fish husbandry through selective breeding, feeding strategies and farm management. The study provides new insights on the impact of intermittent feeding of European seabass, with gene markers and their potential effects, for European seabass aquaculture.

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Section: Discussionmentioning

confidence: 94%

Effects of Short-Term Intermittent Fasting on Growth Performance, Fatty Acids Profile, Glycolysis and Cholesterol Synthesis Gene Expression in European Seabass Dicentrarchus labrax

Ntantali,

Malandrakis,

Abbink

et al. 2023

Fishes

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“…Moreover, the mortality rate was lower in experimental groups with additional lighting. It was shown [ 30 ] that constant light positively affects the growth rate and the aerobic and anaerobic capacities of the muscles of salmon underyearlings reared in a fish hatchery. The obtained results are in good accordance with other results obtained in previous studies [ 31 , 32 ].…”

Section: Discussionmentioning

confidence: 99%

The Effect of the Photoperiod on the Fatty Acid Profile and Weight in Hatchery-Reared Underyearlings and Yearlings of Atlantic Salmon Salmo salar L.

et al. 2020

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The influence of two light regimes, 16:8 h light/dark (LD 16:8) and 24:0 h light/dark (LD 24:0), in comparison to a usual hatchery light regime (HL), on the fatty acids content and weight gain in hatchery-reared underyearlings (at 0+ age) and yearlings (at 1+ age) of Atlantic salmon in the summer–autumn period was studied. The total lipids were analyzed by Folch method, the lipid classes using HPTLC, and the fatty acids of total lipids using GC. The increase in EPA and DHA observed in October in underyearlings and yearlings salmon (especially under LD 24:0) suggests they were physiologically preparing for overwintering. The changes in fatty acids and their ratios in juvenile Atlantic salmon can be used as biochemical indicators of the degree to which hatchery-reared fish are ready to smoltify. These associated with an increase in marine-type specific DHA and EPA, an increase in the 16:0/18:1(n-9) ratio, in correlation with a reduction in MUFAs (mainly 18:1(n-9)). These biochemical modifications, accompanied by fish weight gain, were more pronounced in October in yearlings exposed to continuous light (LD 24:0). The mortality rate was lower in experimental groups of underyearliings with additional lighting. Exposure to prolonged and continuous light did not affect yearlings mortality rate.

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“…Consistent lighting regulates gene expression related to muscle growth in salmon yearlings (Shulgina et al 2021a). Continuous light conditions also alter lipid profiles in salmon fingerlings (fry) (Nemova et al 2020, Nemova et al 2021. Notably, the effects of continuous light conditions may not occur across all life history stages and may be dependent on the period of maturation the fish are in, such that only in reproductively 'critical periods' will negative effects of continuous light on reproductive parameters be apparent (Taranger et al 1999).…”

Section: Lighting Regimesmentioning

confidence: 99%

“…However, some studies have come to different conclusions, e.g., continuous light was related to a higher growth rate of salmon fingerlings in experimental tanks by affecting the aerobic and anaerobic capacity in their muscles (Churova et al 2020), and continuous light following seawater transfer has been shown to result in higher muscle growth (Johnston et al 2004). Another study demonstrated that 14 °C for six weeks with a long-day photoperiod minimises negative effects on growth and mortality for juvenile Atlantic salmon (van Rijn et al 2021).…”

Section: Lighting Regimesmentioning

confidence: 99%

A Review of Factors Affecting Farmed Atlantic Salmon (Salmo salar) Welfare in Australia and Beyond

Layman,

Kadar,

Lyall

et al. 2024

Preprint

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With the increasingly global scale and scope of aquaculture, the need to match this development with improvements in fish welfare is a central societal and industry goal. We provide a comprehensive assessment of the farmed Atlantic salmon (Salmo salar) literature with targeted examples focusing on Atlantic salmon farmed in Tasmania, Australia. We synthesise insights from both small- and industry-scale perspectives, highlighting other reviews that provide discussions of particular sub-areas of farmed salmon research. We focus on recent advances and improved methods for farmed Atlantic salmon handling and management, behaviour, health issues and breeding. We also address wildlife interactions resulting from fish farming, as well as future research directions and system development. This review can serve as the basis for the development of aquaculture management guidelines that place individual fish welfare as a primary goal.

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Muscle-specific gene expression and metabolic enzyme activities in Atlantic salmon Salmo salar L. fry reared under different photoperiod regimes

Cited by 15 publications

References 49 publications

Effects of Short-Term Intermittent Fasting on Growth Performance, Fatty Acids Profile, Glycolysis and Cholesterol Synthesis Gene Expression in European Seabass Dicentrarchus labrax

Effects of Short-Term Intermittent Fasting on Growth Performance, Fatty Acids Profile, Glycolysis and Cholesterol Synthesis Gene Expression in European Seabass Dicentrarchus labrax

The Effect of the Photoperiod on the Fatty Acid Profile and Weight in Hatchery-Reared Underyearlings and Yearlings of Atlantic Salmon Salmo salar L.

A Review of Factors Affecting Farmed Atlantic Salmon (Salmo salar) Welfare in Australia and Beyond

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