Circadian Rhythm Disturbances Due to Exposure to Acidified Conditions and Different Photoperiods in Juvenile Olive Flounder (Paralichthys olivaceus)

Lee, Dae-Won; Song, Jin Ah; Park, Heung-Sik; Choi, Cheol Young

doi:10.1007/s12601-021-00018-y

Cited by 5 publications

(9 citation statements)

References 30 publications

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“…This process likely applies for reef fishes as the circadian cyclical genes, represented by activators and repressors, were shifted. Such a circadian phase shift was also encountered for the olive flounder with different levels of elevated environmental CO2 (Choi, Lee, Song, & Park, 2021). Furthermore, a regulatory connection between the Circadian Rhythm and extracellular pH was found in the goldfish retina concluding that oscillations/fluctuations control neuronal activity and pH (Dmitriev & Mangel, 2000).…”

Section: Discussionmentioning

confidence: 59%

Diel CO₂ fluctuations alter the molecular response of coral reef fishes to ocean acidification conditions

Schunter

Jarrold

Munday

et al. 2021

Preprint

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Environmental CO2 variation can modify the responses of marine organisms to ocean acidification, yet the underlying mechanisms for this effect remain unclear. On coral reefs, environmental CO2 fluctuates on a regular day-night cycle. Effects of future ocean acidification on coral reef fishes might therefore depend on their response to this diel cycle of CO2. To evaluate the effects on the brain molecular response, we exposed two common reef fishes (Acanthochromis polyacanthus and Amphiprion percula) to two projected future CO2 levels (750 and 1,000 microatmospheres) under both stable and diel fluctuating conditions. We found a common signature to stable elevated pCO2 for both species, which included the downregulation of immediate early genes, indicating lower brain activity. The transcriptional program was more strongly affected by higher average CO2 in a stable treatment than for fluctuating treatments, however, the largest difference in molecular response was between stable and fluctuating CO2 treatments. This indicates that a response to a change in environmental CO2 conditions is different for organisms living in a fluctuating than in stable environments. The differential regulation was related to steroid hormones and circadian rhythm (CR). Both species exhibited a marked difference in the expression of CR genes among CO2 treatments, possibly accommodating a more flexible adaptive approach to acid-base control, which could explain reduced impairment. Our results suggest that environmental CO2 fluctuations might enable reef fishes to phase shift their clocks and anticipate CO2 changes, thereby avoiding impairments and more successfully adjust to ocean acidification conditions.

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Section: Discussionmentioning

confidence: 59%

Diel CO₂ fluctuations alter the molecular response of coral reef fishes to ocean acidification conditions

Schunter

Jarrold

Munday

et al. 2021

Preprint

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“…Changes in the expression of circadian genes in response to elevated CO2, have been suggested to result in an amplitude or phase shift of the circadian clock providing an adaptive advantage by increasing flexibility of physiological processes such as acid-base regulation and energy metabolism (Kang et al, 2022;Lee et al, 2021;Schunter et al, 2016Schunter et al, , 2021. CO2 induced changes in the circadian rhythm have been repeatedly observed across various species and are possibly linked to changes in GABA receptor activity (Lee et al, 2021). Given the ubiquity of the circadian clock, there is a need for further research to understand the biological implications of the effect of elevated CO2 on the circadian rhythm and its impacts on downstream physiological processes.…”

Section: Discussionmentioning

confidence: 99%

“…All transcripts involved in the core circadian transcriptional machinery were differentially expressed between gobies from the CO 2 seep and control sites. Changes in the expression of circadian genes in response to elevated CO 2 , have been suggested to result in an amplitude or phase shift of the circadian clock providing an adaptive advantage by increasing flexibility of physiological processes such as acid-base regulation and energy metabolism (Kang et al, 2022; Lee et al, 2021; Schunter et al, 2016, 2021). CO 2 induced changes in the circadian rhythm have been repeatedly observed across various species and are possibly linked to changes in GABA receptor activity (Lee et al, 2021).…”

Section: Discussionmentioning

confidence: 99%

“…The circadian rhythm is a key pathway regulating nearly all physiological processes and all core transcripts in this pathway showed differential expression. CO 2 induced changes in the circadian rhythm have been repeatedly observed across various species and are possibly linked to changes in GABA receptor activity (Lee et al, 2021). The circadian pathway enables organisms to anticipate and respond to environmental changes which is evolutionarily advantageous (Ayyar & Sukumaran, 2021; Dmitriev & Mangel, 2000; Prokkola & Nikinmaa, 2018).…”

Section: Discussionmentioning

confidence: 99%

“…to result in an amplitude or phase shift of the circadian clock providing an adaptive advantage by increasing flexibility of physiological processes such as acid-base regulation and energy metabolism (Kang et al, 2022;Lee et al, 2021;Schunter et al, 2016Schunter et al, , 2021. CO2 induced changes in the circadian rhythm have been repeatedly observed across various species and are possibly linked to changes in GABA receptor activity (Lee et al, 2021).…”

Section: Differential Transcript Expressionmentioning

confidence: 99%

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Brain transcriptome of gobies inhabiting natural CO2 seeps reveal acclimation strategies to long-term acidification

Suresh

Mirasole

Ravasi

et al. 2022

Preprint

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Changes in ocean chemistry resulting from increasing acidification have direct impacts on the physiology and behaviour of teleosts. Ocean acidification (OA) can also affect species behaviour, survival and fitness with repercussions at population, community and ecosystem levels. Volcanic CO2 seeps offer a unique opportunity to study in situ both the direct and indirect effects of OA on fish and investigate their potential for acclimation. Here, we used the natural CO2 seeps in Vulcano Island, Italy to study the effects of OA on the brain transcriptome of the anemone goby, a species with high population density in the CO2 seeps. When compared to fish from environments with ambient pCO2, gobies living in acidified waters showed differences in expression of transcripts involved in ion transport and pH homeostasis, cellular stress, and immune response indicating their capability to mitigate CO2 induced oxidative stress and maintain physiological pH. We also found evidence of potential adaptive mechanisms to restore the functioning of GABA, whose activity can be affected by exposure to elevated CO2 levels. There was also a conspicuous difference in expression of core circadian rhythm transcripts which could provide an adaptive advantage by increasing flexibility of physiological processes under acidified conditions. Additionally, an overall increase in metabolism in fish from the CO2 seep indicates the ability to meet increased energetic costs associated with living in an acidified environment. Our results show potential molecular processes of acclimation to elevated pCO2 in gobies enabling them to thrive in the acidified waters of Vulcano Island.

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Effect of low pH and salinity conditions on the antioxidant response and hepatocyte damage in juvenile olive flounder Paralichthys olivaceus

Lee

Choi

Park

et al. 2022

Marine Environmental Research

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Circadian Rhythm Disturbances Due to Exposure to Acidified Conditions and Different Photoperiods in Juvenile Olive Flounder (Paralichthys olivaceus)

Cited by 5 publications

References 30 publications

Diel CO₂ fluctuations alter the molecular response of coral reef fishes to ocean acidification conditions

Diel CO₂ fluctuations alter the molecular response of coral reef fishes to ocean acidification conditions

Brain transcriptome of gobies inhabiting natural CO2 seeps reveal acclimation strategies to long-term acidification

Effect of low pH and salinity conditions on the antioxidant response and hepatocyte damage in juvenile olive flounder Paralichthys olivaceus

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Circadian Rhythm Disturbances Due to Exposure to Acidified Conditions and Different Photoperiods in Juvenile Olive Flounder (Paralichthys olivaceus)

Cited by 5 publications

References 30 publications

Diel CO2 fluctuations alter the molecular response of coral reef fishes to ocean acidification conditions

Diel CO2 fluctuations alter the molecular response of coral reef fishes to ocean acidification conditions

Brain transcriptome of gobies inhabiting natural CO2 seeps reveal acclimation strategies to long-term acidification

Effect of low pH and salinity conditions on the antioxidant response and hepatocyte damage in juvenile olive flounder Paralichthys olivaceus

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Diel CO₂ fluctuations alter the molecular response of coral reef fishes to ocean acidification conditions

Diel CO₂ fluctuations alter the molecular response of coral reef fishes to ocean acidification conditions