Diel p CO 2 fluctuations alter the molecular response of coral reef fishes to ocean acidification conditions
Abstract Environmental partial pressure of CO 2 ( p CO 2 ) variation can modify the responses of marine organisms to ocean acidification, yet the underlying mechanisms for this effect remain unclear. On coral reefs, environmental p CO 2 fluctuates on a regular day–night cycle. Effects of future ocea...
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crwiley:10.1111/mec.16124 2024-05-19T07:46:29+00:00 Diel p CO 2 fluctuations alter the molecular response of coral reef fishes to ocean acidification conditions Schunter, Celia Jarrold, Michael D. Munday, Philip L. Ravasi, Timothy 2021 http://dx.doi.org/10.1111/mec.16124 https://onlinelibrary.wiley.com/doi/pdf/10.1111/mec.16124 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/mec.16124 https://onlinelibrary.wiley.com/doi/am-pdf/10.1111/mec.16124 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#am http://onlinelibrary.wiley.com/termsAndConditions#vor Molecular Ecology volume 30, issue 20, page 5105-5118 ISSN 0962-1083 1365-294X journal-article 2021 crwiley https://doi.org/10.1111/mec.16124 2024-04-25T08:27:12Z Abstract Environmental partial pressure of CO 2 ( p CO 2 ) variation can modify the responses of marine organisms to ocean acidification, yet the underlying mechanisms for this effect remain unclear. On coral reefs, environmental p CO 2 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 p CO 2 . To evaluate the effects on the brain molecular response, we exposed two common reef fishes ( Acanthochromis polyacanthus and Amphiprion percula ) to two projected future p CO 2 levels (750 and 1,000 µatm) under both stable and diel fluctuating conditions. We found a common signature to stable elevated p CO 2 for both species, which included the downregulation of immediate early genes, indicating lower brain activity. The transcriptional programme was more strongly affected by higher average p CO 2 in a stable treatment than for fluctuating treatments, but the largest difference in molecular response was between stable and fluctuating p CO 2 treatments. This indicates that a response to a change in environmental p CO 2 conditions is different for organisms living in a fluctuating than in stable environments. This differential regulation was related to steroid hormones and circadian rhythm (CR). Both species exhibited a marked difference in the expression of CR genes among p CO 2 treatments, possibly accommodating a more flexible adaptive approach in the response to environmental changes. Our results suggest that environmental p CO 2 fluctuations might enable reef fishes to phase‐shift their clocks and anticipate p CO 2 changes, thereby avoiding impairments and more successfully adjust to ocean acidification conditions. Article in Journal/Newspaper Ocean acidification Wiley Online Library Molecular Ecology 30 20 5105 5118 |
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English |
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Abstract Environmental partial pressure of CO 2 ( p CO 2 ) variation can modify the responses of marine organisms to ocean acidification, yet the underlying mechanisms for this effect remain unclear. On coral reefs, environmental p CO 2 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 p CO 2 . To evaluate the effects on the brain molecular response, we exposed two common reef fishes ( Acanthochromis polyacanthus and Amphiprion percula ) to two projected future p CO 2 levels (750 and 1,000 µatm) under both stable and diel fluctuating conditions. We found a common signature to stable elevated p CO 2 for both species, which included the downregulation of immediate early genes, indicating lower brain activity. The transcriptional programme was more strongly affected by higher average p CO 2 in a stable treatment than for fluctuating treatments, but the largest difference in molecular response was between stable and fluctuating p CO 2 treatments. This indicates that a response to a change in environmental p CO 2 conditions is different for organisms living in a fluctuating than in stable environments. This differential regulation was related to steroid hormones and circadian rhythm (CR). Both species exhibited a marked difference in the expression of CR genes among p CO 2 treatments, possibly accommodating a more flexible adaptive approach in the response to environmental changes. Our results suggest that environmental p CO 2 fluctuations might enable reef fishes to phase‐shift their clocks and anticipate p CO 2 changes, thereby avoiding impairments and more successfully adjust to ocean acidification conditions. |
format |
Article in Journal/Newspaper |
author |
Schunter, Celia Jarrold, Michael D. Munday, Philip L. Ravasi, Timothy |
spellingShingle |
Schunter, Celia Jarrold, Michael D. Munday, Philip L. Ravasi, Timothy Diel p CO 2 fluctuations alter the molecular response of coral reef fishes to ocean acidification conditions |
author_facet |
Schunter, Celia Jarrold, Michael D. Munday, Philip L. Ravasi, Timothy |
author_sort |
Schunter, Celia |
title |
Diel p CO 2 fluctuations alter the molecular response of coral reef fishes to ocean acidification conditions |
title_short |
Diel p CO 2 fluctuations alter the molecular response of coral reef fishes to ocean acidification conditions |
title_full |
Diel p CO 2 fluctuations alter the molecular response of coral reef fishes to ocean acidification conditions |
title_fullStr |
Diel p CO 2 fluctuations alter the molecular response of coral reef fishes to ocean acidification conditions |
title_full_unstemmed |
Diel p CO 2 fluctuations alter the molecular response of coral reef fishes to ocean acidification conditions |
title_sort |
diel p co 2 fluctuations alter the molecular response of coral reef fishes to ocean acidification conditions |
publisher |
Wiley |
publishDate |
2021 |
url |
http://dx.doi.org/10.1111/mec.16124 https://onlinelibrary.wiley.com/doi/pdf/10.1111/mec.16124 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/mec.16124 https://onlinelibrary.wiley.com/doi/am-pdf/10.1111/mec.16124 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Molecular Ecology volume 30, issue 20, page 5105-5118 ISSN 0962-1083 1365-294X |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#am http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/mec.16124 |
container_title |
Molecular Ecology |
container_volume |
30 |
container_issue |
20 |
container_start_page |
5105 |
op_container_end_page |
5118 |
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1799486694737575936 |