Circadian Rhythm Disturbances Due to Exposure to Acidified Conditions and Different Photoperiods in Juvenile Olive Flounder (Paralichthys olivaceus)
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Title
- Circadian Rhythm Disturbances Due to Exposure to Acidified Conditions and Different Photoperiods in Juvenile Olive Flounder (Paralichthys olivaceus)
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Alternative Title
- Circadian Rhythm Disturbances Due to Exposure to Acidified Conditions and Different Photoperiods in Juvenile Olive Flounder (Paralichthys olivaceus)
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Author(s)
- Lee, Dae Won; Song, Jin Ah; Park, Heung-Sik; Choi, Cheol Young
- KIOST Author(s)
- Lee, Dae Won(이대원); Park, Heung Sik(박흥식)
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Alternative Author(s)
- 이대원; 박흥식
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Publication Year
- 2021-06
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Abstract
- Carbon dioxide (CO2) is being continuously discharged into the atmosphere and is now at a concentration sufficient to cause ocean acidification. In particular, it has been reported that changes in carbonate concentration in seawater by ocean acidification can inhibit olfactory function and predator avoidance ability in fish and affect their circadian rhythm. However, although increased CO2 concentration in seawater is an important environmental factor affecting fish survival, only a few studies have been conducted to evaluate the effect of CO2 and different photoperiods. Therefore, in this study, we investigated changes in the circadian rhythm of juvenile olive flounder (Paralichthys olivaceus) under different light conditions (12 h ligh:12 h dark; constant dark; constant light) and CO2 exposure levels (pH 8.1, 7.8, and 7.5), by analyzing changes in plasma concentrations of Cryptochrome1 and Period2, which are secreted during the day (light conditions), and melatonin, which is secreted at night (dark conditions). CO2 exposure led to phase shifts (temporarily abolished, phase delayed, or reversed) in the rhythm of juveniles. In conclusion, CO2 exposure, along with changes in photoperiods, increases the disturbance in the circadian rhythm of juvenile P. olivaceus.
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ISSN
- 1738-5261
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URI
- https://sciwatch.kiost.ac.kr/handle/2020.kiost/42226
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DOI
- 10.1007/s12601-021-00018-y
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Bibliographic Citation
- OCEAN SCIENCE JOURNAL, v.56, no.2, pp.198 - 206, 2021
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Publisher
- 한국해양과학기술원
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Keywords
- cryptochrome1; Melatonin; Ocean acidification; Paralichthys olivaceus; period2
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Type
- Article
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Language
- English
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Document Type
- Article
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