Effects of seawater acclimation at constant and diel cyclic temperatures on growth, osmoregulation and branchial phospholipid fatty acid composition in rainbow trout Oncorhynchus mykiss

Jin, G.; Huang, Ming; Zhou, Ye; Deng, Qianlong; Liu, Rongxin; Gao, Qinfeng; Dong, Yan; Dong, Shuanglin

doi:10.1007/s00360-020-01330-0

Cited by 4 publications

(10 citation statements)

References 57 publications

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“…Similarly, sh living in seawater will also have a higher proportion of unsaturated fatty acids in tissue phospholipids, which can be used to maintain membrane function [21,22].To date, studies from our laboratory demonstrated that temperature could signi cantly in uence the PLFA composition in salmonids [15,16]. Our data from Ge et al [11] reported that temperatures of 12.5 and 13 ± 2 °C are preferable for rainbow trout during seawater acclimation. However, the effects of seawater acclimation at different temperature regimes on liver and intestinal phospholipids in rainbow trout remain unknown.…”

mentioning

confidence: 64%

“…Lipid extraction and PLFA analysis were performed according to Ge et al [11]. Brie y, liver and intestine (0.1 g) were homogenised in chloroform/methanol (2:1, v/v).…”

Section: Lipid Extraction and Plfa Analysismentioning

confidence: 99%

“…The discovery of the Yellow Sea Cold Water Mass opened up the possibility of offshore salmon mariculture [3,4] and one of the pivotal stages of this project is the 'mountain-sea relay' mode, in which salmon are hatched and bred until the juvenile stage in freshwater in mountainous areas, transferred to seawater, and fattened to commercial size. Previous research has reported that the seawater tolerance of salmonids can be in uenced by life stage [5], photoperiod [6], salinity stimulation [7], nutritional status [8,9] and temperature change [10,11].During adaptation to environmental changes (e.g. temperature and salinity), organisms alter the physical properties of the membrane, including uidity, thickness, permeability, and viscosity, by restructuring the phospholipid fatty acid (PLFA) composition [12,13].…”

mentioning

confidence: 99%

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Effects of constant and diel cyclic temperatures on the liver and intestinal phospholipid fatty acid composition in rainbow trout Oncorhynchus mykiss during seawater acclimation

Jin¹,

Zhou²,

Huang³

et al. 2021

BMC Zool

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Background Rainbow trout is an economically important fish in aquaculture and is a model species in environmental physiology. Despite earlier research on the seawater adaptability of rainbow trout at different temperature regimes, the influence on the liver and intestine in this species is still unknown. Two trials were conducted to investigate the effects of constant and diel cyclic temperatures on phospholipid fatty acid (PLFA) composition in the liver and intestine of rainbow trout during seawater acclimation. Results At the end of growth trial 1, fish at 9 and 12.5 °C showed significantly higher ratios of unsaturated to saturated (U/S) and unsaturation index (UI) than those at 16 °C in liver and intestine phospholipids. After day 1 of seawater acclimation, the U/S, UI, and average chain length (ACL) of liver and intestinal phospholipids in fish at 16 °C significantly increased. Two weeks after seawater acclimation, the liver and intestinal PLFA composition adapted to salinity changes. In trial 2, significantly higher U/S, UI, and ACL were found in intestinal phospholipids at 13 ± 2 °C. On the first day after seawater acclimation, UI and ACL in liver phospholipids significantly increased at 13 °C, while fish at 13 ± 2 °C showed significantly decreased U/S, UI, and ACL in the intestine. At the end of growth trial 2, liver PLFA compositions were stable, whereas intestinal PLFA at 13 and 13 ± 1 °C showed significantly decreased U/S, UI, and ACL. A two-way analysis of variance and principal component analysis revealed significant effects of different constant temperatures, seawater acclimation, and their interaction on the liver and intestinal phospholipids, a significant effect of diel cyclic temperature on intestinal phospholipids, and the effects of seawater acclimation and its interaction with diel cyclic temperature on liver phospholipids. Conclusion Temperatures of 9 and 12.5 °C could elevate membrane fluidity and thickness in the liver and intestine of rainbow trout in freshwater, whereas no significant effects were found with diel temperature variations. After seawater acclimation, constant and diel cyclic temperatures significantly influenced the membrane fluidity and thickness of the liver and intestine. Compared with constant temperature, diel temperature variation (13 ± 2 °C) can enhance the adaptability of rainbow trout during seawater acclimation.

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mentioning

confidence: 64%

“…Lipid extraction and PLFA analysis were performed according to Ge et al [11]. Brie y, liver and intestine (0.1 g) were homogenised in chloroform/methanol (2:1, v/v).…”

Section: Lipid Extraction and Plfa Analysismentioning

confidence: 99%

mentioning

confidence: 99%

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Effects of constant and diel cyclic temperatures on the liver and intestinal phospholipid fatty acid composition in rainbow trout Oncorhynchus mykiss during seawater acclimation

Jin¹,

Zhou²,

Huang³

et al. 2021

BMC Zool

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“…For example, continuous light exposure induces abnormal gonadal development or/and lack of synchronization of smoltification processes (Sievers et al, 2018;Churova et al, 2020). With the increasing attention on fish welfare, less extreme photoperiods, such as 12:12 or 16:8 h, are being used instead in aquaculture (Ge et al, 2021;Macaulay et al, 2021). However, systematic studies that determine the photoperiod conditions for optimal growth and minimal stimulation are still lacking (Hvas et al, 2021).…”

Section: Discussionmentioning

confidence: 99%

“…The culture of Salmonidae has considerably developed in terms of scale and distribution (Albert et al, 2019;Barrett et al, 2020;Hvas et al, 2021). Although the condition control of culture has been very mature in RAS and many studies about the environmental effects on fish performance have been conducted, only few studies have been reported on steelhead trout compared with other fish species (Ge et al, 2021;Salinas et al, 2022). The optimal environmental factor varies among species and developmental stages but is also related to requirements and mastery of farmers' skill degree.…”

Section: Introductionmentioning

confidence: 99%

Effects of temperature and photoperiod on growth, physiological, and behavioral performance in steelhead trout (Oncorhynchus mykiss) under indoor aquaculture condition

Zhang

et al. 2023

Front. Mar. Sci.

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Light and temperature are necessary conditions for migratory fish. The assessment of fish physiology and behavior is important for identifying fish welfare, but also for the assessment of the optimal setting of recirculating aquaculture systems (RASs). This study aimed to explore the interactive effect of photoperiod and temperature on steelhead trout culture. Four treatments were set up with specific settings were as follows: a LP-LT group treated with 16L:8D and 12°C, a LP-HT group treated with 16L:8D and 16°C, a SP-LT group treated with 12L:12D and 12°C, and a SP-HT group treated with 12L:12D and 16°C. Growth performance, behavioral and physiological parameters were measured. Two indexes, locomotor activity and social interaction were used for behavioral analysis, and the results were applied to interpret the behavioral responses to the photoperiod and temperature stimulation in juveniles. The growth performances were significantly lower in treatments LP-LT and SP-LT. The treatment LP-HT had significantly higher growth performance than the other treatments, but no significant differences were noted in survival rate and coefficient of variation. The results of fish behavior indicated that the movement of juveniles should be primarily monitored at high temperatures or long photoperiods, and the state parameters should be primarily monitored at low temperatures or short photoperiods. The results of the physiological parameters showed that the recovery time from stress varied among different treatments. After 60 days of the experiment, superoxide dismutase and alanine aminotransferase dropped back to their initial level. The results of Na+-K+-ATPase showed that although the combined effect of photoperiod and temperature could advance the time of smoltification, it may result in poorer salt tolerance. Our findings underscore the importance of the interaction of photoperiod and temperature on steelhead trout culture. The outcome could provide guidance for the development of effective aquaculture systems.

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Effects of different temperatures on seawater acclimation in rainbow trout Oncorhynchus mykiss: osmoregulation and branchial phospholipid fatty acid composition

et al. 2021

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Effects of seawater acclimation at constant and diel cyclic temperatures on growth, osmoregulation and branchial phospholipid fatty acid composition in rainbow trout Oncorhynchus mykiss

Cited by 4 publications

References 57 publications

Effects of constant and diel cyclic temperatures on the liver and intestinal phospholipid fatty acid composition in rainbow trout Oncorhynchus mykiss during seawater acclimation

Effects of constant and diel cyclic temperatures on the liver and intestinal phospholipid fatty acid composition in rainbow trout Oncorhynchus mykiss during seawater acclimation

Effects of temperature and photoperiod on growth, physiological, and behavioral performance in steelhead trout (Oncorhynchus mykiss) under indoor aquaculture condition

Effects of different temperatures on seawater acclimation in rainbow trout Oncorhynchus mykiss: osmoregulation and branchial phospholipid fatty acid composition

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