Impact of temperature shift on gill physiology during smoltification of Atlantic salmon smolts (Salmo salar L.)

Bernard, Benoît; Leguen, Isabelle; Mandiki, Syaghalirwa N.M.; Cornet, Valérie; Redivo, Baptiste; Kestemont, Patrick

doi:10.1016/j.cbpa.2020.110685

Cited by 8 publications

(8 citation statements)

References 43 publications

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“…In general, increased temperature results in increased body weight (Nisembaum et al, 2020). Within the suitable temperature interval, high temperature could lead to early smoltification date and large fish size (Rosengren et al, 2017;Bernard et al, 2020). Therefore, temperature could be viewed as a regulatory factor, especially in controlling (accelerating or delaying) the growth rate.…”

Section: Discussionmentioning

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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Section: Discussionmentioning

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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“…Secondly, the average temperature shift of 3.3 • C between the Ourthe tributary and the Meuse river might also disturb and slow down the downstream migration stimulation by reducing gill NKA, plasma GH, and cortisol levels. This would lead to a reduction of hypo-osmoregulatory capacities and a loss of seawater tolerance, with, in the worst case, a possible desmoltification (Duston et al, 1991;McCormick et al, 1999;Bernard et al, 2019Bernard et al, , 2020. The median migration speed of the smolts from the release site to the most downstream detection was 0.11 m s − 1 .…”

Section: Discussionmentioning

confidence: 99%

Trying to choose the less bad route: Individual migratory behaviour of Atlantic salmon smolts (Salmo salar L.) approaching a bifurcation between a hydropower station and a navigation canal

Renardy

Takriet

Benitez

et al. 2021

Ecological Engineering

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Contrary to small-and medium-sized rivers, little attention has been paid to the downstream migration of Atlantic salmon smolts in large-sized rivers and the size-related impact of hydropower stations. From 2014 to 2016, we investigated the downstream migration of n = 72 acoustic-tagged smolts in the Meuse river at a bifurcation zone between a hydropower station equipped with three Kaplan turbines and a navigation canal. A hydrodynamic model that solves the depth-integrated shallow water equations on a Cartesian grid using a finite volume technique was used to infer the influence of water discharge and flow velocity on the smolts' behaviour upstream of the hydroelectric complex. Of the migrating smolts, 41.5% performed back and forth movements before approaching the complex for the first time, sometimes over long distances and at a slow pace, leading to significant delays (3-298 h). Beyond about 250 m 3 s − 1 , the water flow direction changes towards the hydropower station with a gradual acceleration. A median water discharge of 161 m 3 s − 1 and associated median flow velocity of 0.14 m s − 1 tended to favour a more direct and downstream movement towards the hydropower station. On the other hand, the navigation canal was mainly approached at low water discharge (median 132 m 3 s − 1 ), due to a higher flow velocity (median 0.11 m s − 1 ) at the entrance. Of the released smolts, only 38.6% passed through the complex, of which 36.4% migrated by the navigation canal and 63.6% by the hydropower station, with a median research time of 04:44. Among all the released individuals, the escapement rate at the end of the study site was 2.9% by the canal and 8.3% by the Meuse river. This site, which offers two non-optimal, unattractive and unsafe migration routes, turns out to be problematic for successful downstream smolt migration.

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“…Importantly, gill tissue directly contacts with the external environment and, thereby, has more probability to subject to environmental stresses [19]. Previously, the effects of heat stress on morphological changes, damage, and oxidative stress were investigated in gill tissue [20][21][22][23][24][25]. Recently, studies have shown that heat stress could reduce the osmoregulation core enzyme (Na + / K + -ATPase) activity in gill tissue [25,26].…”

Section: Introductionmentioning

confidence: 99%

“…Previously, the effects of heat stress on morphological changes, damage, and oxidative stress were investigated in gill tissue [20][21][22][23][24][25]. Recently, studies have shown that heat stress could reduce the osmoregulation core enzyme (Na + / K + -ATPase) activity in gill tissue [25,26]. However, how heat stress effects fish's osmoregulation function is still unclear.…”

Section: Introductionmentioning

confidence: 99%

Transcriptome analysis reveals the high temperature induced damage is a significant factor affecting the osmotic function of gill tissue in Siberian sturgeon (Acipenser baerii)

Yang

Lin

et al. 2023

BMC Genomics

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Background Maintaining osmotic equilibrium plays an important role in the survival of cold-water fishes. Heat stress has been proven to reduce the activity of Na+/K+-ATPase in the gill tissue, leading to destruction of the osmotic equilibrium. However, the mechanism of megatemperature affecting gill osmoregulation has not been fully elucidated. Results In this study, Siberian sturgeon (Acipenser baerii) was used to analyze histopathological change, plasma ion level, and transcriptome of gill tissue subjected to 20℃, 24℃and 28℃. The results showed that ROS level and damage were increased in gill tissue with the increasing of heat stress temperature. Plasma Cl− level at 28℃ was distinctly lower than that at 20℃ and 24℃, while no significant difference was found in Na+ and K+ ion levels among different groups. Transcriptome analysis displayed that osmoregulation-, DNA-repair- and apoptosis-related terms or pathways were enriched in GO and KEGG analysis. Moreover, 194 osmoregulation-related genes were identified. Amongst, the expression of genes limiting ion outflow, occluding (OCLN), and ion absorption, solute carrier family 4, member 2 (AE2) solute carrier family 9, member 3 (NHE3) chloride channel 2 (CLC-2) were increased, while Na+/K+-ATPase alpha (NKA-a) expression was decreased after heat stress. Conclusions This study reveals for the first time that the effect of heat stress on damage and osmotic regulation in gill tissue of cold-water fishes. Heat stress increases the permeability of fish’s gill tissue, and induces the gill tissue to keep ion balance through active ion absorption and passive ion outflow. Our study will contribute to research of global-warming-caused effects on cold-water fishes.

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Impact of temperature shift on gill physiology during smoltification of Atlantic salmon smolts (Salmo salar L.)

Cited by 8 publications

References 43 publications

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

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

Trying to choose the less bad route: Individual migratory behaviour of Atlantic salmon smolts (Salmo salar L.) approaching a bifurcation between a hydropower station and a navigation canal

Transcriptome analysis reveals the high temperature induced damage is a significant factor affecting the osmotic function of gill tissue in Siberian sturgeon (Acipenser baerii)

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