Ocean acidification buffers the physiological responses of the king ragworm Alitta virens to the common pollutant copper
This is the author accepted manuscript. The final version is available from Elsevier via the DOI in this record Ocean acidification (OA) has the potential to alter the bioavailability of pH sensitive metals contaminating coastal sediments, particularly copper, by changing their speciation in seawate...
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ftunivexeter:oai:ore.exeter.ac.uk:10871/38418 2024-09-15T18:28:00+00:00 Ocean acidification buffers the physiological responses of the king ragworm Alitta virens to the common pollutant copper Nielson, C Hird, C Lewis, C 2019 http://hdl.handle.net/10871/38418 https://doi.org/10.1016/j.aquatox.2019.05.003 en eng Elsevier Vol. 212, pp. 120 - 127 doi:10.1016/j.aquatox.2019.05.003 http://hdl.handle.net/10871/38418 0166-445X Aquatic Toxicology © 2019. This version is made available under the CC-BY-NC-ND 4.0 license: https://creativecommons.org/licenses/by-nc-nd/4.0/ 2020-05-10 Under embargo until 10 May 2020 incompliance with publisher policy https://creativecommons.org/licenses/by-nc-nd/4.0/ Polychaete DNA-damage Oxidative stress Acid-base physiology Article 2019 ftunivexeter https://doi.org/10.1016/j.aquatox.2019.05.003 2024-07-29T03:24:16Z This is the author accepted manuscript. The final version is available from Elsevier via the DOI in this record Ocean acidification (OA) has the potential to alter the bioavailability of pH sensitive metals contaminating coastal sediments, particularly copper, by changing their speciation in seawater. Hence OA may drive increased toxicity of these metals to coastal biota. Here, we demonstrate complex interactions between OA and copper on the physiology and toxicity responses of the sediment dwelling polychaete Alitta virens. Worm coelomic fluid pCO2 was not increased by exposure to OA conditions (pHNBS 7.77, pCO2 530 μatm) for 14 days, suggesting either physiological or behavioural responses to control coelomic fluid pCO2. Exposure to 0.25 μM nominal copper caused a decrease in coelomic fluid pCO2 by 43.3% and bicarbonate ions by 44.6% but paradoxically this copper-induced effect was reduced under near-future OA conditions. Hence OA appeared to ‘buffer’ the copper-induced acid-base disturbance. DNA damage was significantly increased in worms exposed to copper under ambient pCO2 conditions, rising by 11.1% compared to the worms in the no copper control, but there was no effect of OA conditions on the level of DNA damage induced by copper when exposed in combination. These interactions differ from the increased copper toxicity under OA conditions reported for several other invertebrate species. Hence this new evidence adds to the developing paradigm that species’ physiology is key in determining the interactions of these two stressors rather than it purely being driven by the changes in metal chemistry under lower seawater pH. University of Exeter Article in Journal/Newspaper Ocean acidification University of Exeter: Open Research Exeter (ORE) Aquatic Toxicology 212 120 127 |
institution |
Open Polar |
collection |
University of Exeter: Open Research Exeter (ORE) |
op_collection_id |
ftunivexeter |
language |
English |
topic |
Polychaete DNA-damage Oxidative stress Acid-base physiology |
spellingShingle |
Polychaete DNA-damage Oxidative stress Acid-base physiology Nielson, C Hird, C Lewis, C Ocean acidification buffers the physiological responses of the king ragworm Alitta virens to the common pollutant copper |
topic_facet |
Polychaete DNA-damage Oxidative stress Acid-base physiology |
description |
This is the author accepted manuscript. The final version is available from Elsevier via the DOI in this record Ocean acidification (OA) has the potential to alter the bioavailability of pH sensitive metals contaminating coastal sediments, particularly copper, by changing their speciation in seawater. Hence OA may drive increased toxicity of these metals to coastal biota. Here, we demonstrate complex interactions between OA and copper on the physiology and toxicity responses of the sediment dwelling polychaete Alitta virens. Worm coelomic fluid pCO2 was not increased by exposure to OA conditions (pHNBS 7.77, pCO2 530 μatm) for 14 days, suggesting either physiological or behavioural responses to control coelomic fluid pCO2. Exposure to 0.25 μM nominal copper caused a decrease in coelomic fluid pCO2 by 43.3% and bicarbonate ions by 44.6% but paradoxically this copper-induced effect was reduced under near-future OA conditions. Hence OA appeared to ‘buffer’ the copper-induced acid-base disturbance. DNA damage was significantly increased in worms exposed to copper under ambient pCO2 conditions, rising by 11.1% compared to the worms in the no copper control, but there was no effect of OA conditions on the level of DNA damage induced by copper when exposed in combination. These interactions differ from the increased copper toxicity under OA conditions reported for several other invertebrate species. Hence this new evidence adds to the developing paradigm that species’ physiology is key in determining the interactions of these two stressors rather than it purely being driven by the changes in metal chemistry under lower seawater pH. University of Exeter |
format |
Article in Journal/Newspaper |
author |
Nielson, C Hird, C Lewis, C |
author_facet |
Nielson, C Hird, C Lewis, C |
author_sort |
Nielson, C |
title |
Ocean acidification buffers the physiological responses of the king ragworm Alitta virens to the common pollutant copper |
title_short |
Ocean acidification buffers the physiological responses of the king ragworm Alitta virens to the common pollutant copper |
title_full |
Ocean acidification buffers the physiological responses of the king ragworm Alitta virens to the common pollutant copper |
title_fullStr |
Ocean acidification buffers the physiological responses of the king ragworm Alitta virens to the common pollutant copper |
title_full_unstemmed |
Ocean acidification buffers the physiological responses of the king ragworm Alitta virens to the common pollutant copper |
title_sort |
ocean acidification buffers the physiological responses of the king ragworm alitta virens to the common pollutant copper |
publisher |
Elsevier |
publishDate |
2019 |
url |
http://hdl.handle.net/10871/38418 https://doi.org/10.1016/j.aquatox.2019.05.003 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
Vol. 212, pp. 120 - 127 doi:10.1016/j.aquatox.2019.05.003 http://hdl.handle.net/10871/38418 0166-445X Aquatic Toxicology |
op_rights |
© 2019. This version is made available under the CC-BY-NC-ND 4.0 license: https://creativecommons.org/licenses/by-nc-nd/4.0/ 2020-05-10 Under embargo until 10 May 2020 incompliance with publisher policy https://creativecommons.org/licenses/by-nc-nd/4.0/ |
op_doi |
https://doi.org/10.1016/j.aquatox.2019.05.003 |
container_title |
Aquatic Toxicology |
container_volume |
212 |
container_start_page |
120 |
op_container_end_page |
127 |
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1810469306534723584 |