CO 2 -induced ocean acidification increases anxiety in Rockfish via alteration of GABA A receptor functioning
The average surface pH of the ocean is dropping at a rapid rate due to the dissolution of anthropogenic CO 2 , raising concerns for marine life. Additionally, some coastal areas periodically experience upwelling of CO 2 -enriched water with reduced pH. Previous research has demonstrated ocean acidif...
Published in: | Proceedings of the Royal Society B: Biological Sciences |
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crroyalsociety:10.1098/rspb.2013.2509 2024-09-15T18:27:54+00:00 CO 2 -induced ocean acidification increases anxiety in Rockfish via alteration of GABA A receptor functioning Hamilton, Trevor James Holcombe, Adam Tresguerres, Martin 2014 http://dx.doi.org/10.1098/rspb.2013.2509 https://royalsocietypublishing.org/doi/pdf/10.1098/rspb.2013.2509 https://royalsocietypublishing.org/doi/full-xml/10.1098/rspb.2013.2509 en eng The Royal Society https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ Proceedings of the Royal Society B: Biological Sciences volume 281, issue 1775, page 20132509 ISSN 0962-8452 1471-2954 journal-article 2014 crroyalsociety https://doi.org/10.1098/rspb.2013.2509 2024-08-19T04:24:50Z The average surface pH of the ocean is dropping at a rapid rate due to the dissolution of anthropogenic CO 2 , raising concerns for marine life. Additionally, some coastal areas periodically experience upwelling of CO 2 -enriched water with reduced pH. Previous research has demonstrated ocean acidification (OA)-induced changes in behavioural and sensory systems including olfaction, which is due to altered function of neural gamma-aminobutyric acid type A (GABA A ) receptors. Here, we used a camera-based tracking software system to examine whether OA-dependent changes in GABA A receptors affect anxiety in juvenile Californian rockfish ( Sebastes diploproa ). Anxiety was estimated using behavioural tests that measure light/dark preference (scototaxis) and proximity to an object. After one week in OA conditions projected for the next century in the California shore (1125 ± 100 µatm, pH 7.75), anxiety was significantly increased relative to controls (483 ± 40 µatm CO 2 , pH 8.1). The GABA A -receptor agonist muscimol, but not the antagonist gabazine, caused a significant increase in anxiety consistent with altered Cl − flux in OA-exposed fish. OA-exposed fish remained more anxious even after 7 days back in control seawater; however, they resumed their normal behaviour by day 12. These results show that OA could severely alter rockfish behaviour; however, this effect is reversible. Article in Journal/Newspaper Ocean acidification The Royal Society Proceedings of the Royal Society B: Biological Sciences 281 1775 20132509 |
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The average surface pH of the ocean is dropping at a rapid rate due to the dissolution of anthropogenic CO 2 , raising concerns for marine life. Additionally, some coastal areas periodically experience upwelling of CO 2 -enriched water with reduced pH. Previous research has demonstrated ocean acidification (OA)-induced changes in behavioural and sensory systems including olfaction, which is due to altered function of neural gamma-aminobutyric acid type A (GABA A ) receptors. Here, we used a camera-based tracking software system to examine whether OA-dependent changes in GABA A receptors affect anxiety in juvenile Californian rockfish ( Sebastes diploproa ). Anxiety was estimated using behavioural tests that measure light/dark preference (scototaxis) and proximity to an object. After one week in OA conditions projected for the next century in the California shore (1125 ± 100 µatm, pH 7.75), anxiety was significantly increased relative to controls (483 ± 40 µatm CO 2 , pH 8.1). The GABA A -receptor agonist muscimol, but not the antagonist gabazine, caused a significant increase in anxiety consistent with altered Cl − flux in OA-exposed fish. OA-exposed fish remained more anxious even after 7 days back in control seawater; however, they resumed their normal behaviour by day 12. These results show that OA could severely alter rockfish behaviour; however, this effect is reversible. |
format |
Article in Journal/Newspaper |
author |
Hamilton, Trevor James Holcombe, Adam Tresguerres, Martin |
spellingShingle |
Hamilton, Trevor James Holcombe, Adam Tresguerres, Martin CO 2 -induced ocean acidification increases anxiety in Rockfish via alteration of GABA A receptor functioning |
author_facet |
Hamilton, Trevor James Holcombe, Adam Tresguerres, Martin |
author_sort |
Hamilton, Trevor James |
title |
CO 2 -induced ocean acidification increases anxiety in Rockfish via alteration of GABA A receptor functioning |
title_short |
CO 2 -induced ocean acidification increases anxiety in Rockfish via alteration of GABA A receptor functioning |
title_full |
CO 2 -induced ocean acidification increases anxiety in Rockfish via alteration of GABA A receptor functioning |
title_fullStr |
CO 2 -induced ocean acidification increases anxiety in Rockfish via alteration of GABA A receptor functioning |
title_full_unstemmed |
CO 2 -induced ocean acidification increases anxiety in Rockfish via alteration of GABA A receptor functioning |
title_sort |
co 2 -induced ocean acidification increases anxiety in rockfish via alteration of gaba a receptor functioning |
publisher |
The Royal Society |
publishDate |
2014 |
url |
http://dx.doi.org/10.1098/rspb.2013.2509 https://royalsocietypublishing.org/doi/pdf/10.1098/rspb.2013.2509 https://royalsocietypublishing.org/doi/full-xml/10.1098/rspb.2013.2509 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Proceedings of the Royal Society B: Biological Sciences volume 281, issue 1775, page 20132509 ISSN 0962-8452 1471-2954 |
op_rights |
https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ |
op_doi |
https://doi.org/10.1098/rspb.2013.2509 |
container_title |
Proceedings of the Royal Society B: Biological Sciences |
container_volume |
281 |
container_issue |
1775 |
container_start_page |
20132509 |
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1810469188469260288 |