Impact of ocean acidification on thermal tolerance and acid–base regulation of Mytilus edulis from the White Sea
Ocean warming and acidification are two important environmental drivers affecting marine organisms. Organisms living at high latitudes might be especially threatened in near future, as current environmental changes are larger and occur faster. Therefore, we investigated the effect of hypercapnia on...
Published in: | Polar Biology |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
2018
|
Subjects: | |
Online Access: | https://epic.awi.de/id/eprint/47496/ https://epic.awi.de/id/eprint/47496/1/ZZittier_WS_Mytilus_PolBiol18.pdf https://doi.org/10.1007/s00300-018-2362-x https://hdl.handle.net/10013/epic.c4e95656-fc37-4c85-97d4-bef1d6318f42 |
id |
ftawi:oai:epic.awi.de:47496 |
---|---|
record_format |
openpolar |
spelling |
ftawi:oai:epic.awi.de:47496 2024-06-09T07:43:57+00:00 Impact of ocean acidification on thermal tolerance and acid–base regulation of Mytilus edulis from the White Sea Zittier, Z. M. C. Bock, Christian Sukhotin, A. A. Häfker, N Sören Pörtner, H. O. 2018 application/pdf https://epic.awi.de/id/eprint/47496/ https://epic.awi.de/id/eprint/47496/1/ZZittier_WS_Mytilus_PolBiol18.pdf https://doi.org/10.1007/s00300-018-2362-x https://hdl.handle.net/10013/epic.c4e95656-fc37-4c85-97d4-bef1d6318f42 unknown https://epic.awi.de/id/eprint/47496/1/ZZittier_WS_Mytilus_PolBiol18.pdf Zittier, Z. M. C. , Bock, C. orcid:0000-0003-0052-3090 , Sukhotin, A. A. , Häfker, N. S. orcid:0000-0002-4883-3656 and Pörtner, H. O. orcid:0000-0001-6535-6575 (2018) Impact of ocean acidification on thermal tolerance and acid–base regulation of Mytilus edulis from the White Sea , Polar Biology . doi:10.1007/s00300-018-2362-x <https://doi.org/10.1007/s00300-018-2362-x> , hdl:10013/epic.c4e95656-fc37-4c85-97d4-bef1d6318f42 EPIC3Polar Biology, ISSN: 0722-4060 Article isiRev info:eu-repo/semantics/article 2018 ftawi https://doi.org/10.1007/s00300-018-2362-x 2024-05-14T23:31:42Z Ocean warming and acidification are two important environmental drivers affecting marine organisms. Organisms living at high latitudes might be especially threatened in near future, as current environmental changes are larger and occur faster. Therefore, we investigated the effect of hypercapnia on thermal tolerance and physiological performance of sub-Arctic Mytilus edulis from the White Sea. Mussels were exposed (2 weeks) to 390 µatm (control) and 1,120 µatm CO2 (year 2100) before respiration rate (MO2), anaerobic metabolite (succinate) level, haemolymph acid-base status, and intracellular pH (pHi) were determined during acute warming (10-28°C, 3°C over night). In normocapnic mussels, warming induced MO2 to rise exponentially until it levelled off beyond a breakpoint temperature of 20.5°C. Concurrently, haemolymph PCO2 rose significantly >19°C followed by a decrease in PO2 indicating the pejus temperature (TP, onset of thermal limitation). Succinate started to accumulate at 28°C under normocapnia defining the critical temperature (TC). pHi was maintained during warming until it dropped at 28°C, in line with the concomitant transition to anaerobiosis. At acclimation temperature, CO2 had only a minor impact. During warming, MO2 was stimulated by CO2 resulting in an elevated breakpoint of 25.8°C. Nevertheless, alterations in haemolymph gases (>16°C) and the concomitant changes of pHi and succinate level (25°C) occurred at lower temperature under hypercapnia versus normocapnia indicating a downward shift of both thermal limits TP and TC by CO2. Compared to temperate conspecifics, sub-Arctic mussels showed an enhanced thermal sensitivity, exacerbated further by hypercapnia, indicating their potential vulnerability to environmental changes projected for 2100. Article in Journal/Newspaper Arctic Ocean acidification Polar Biology White Sea Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Arctic White Sea Polar Biology 41 11 2261 2273 |
institution |
Open Polar |
collection |
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
Ocean warming and acidification are two important environmental drivers affecting marine organisms. Organisms living at high latitudes might be especially threatened in near future, as current environmental changes are larger and occur faster. Therefore, we investigated the effect of hypercapnia on thermal tolerance and physiological performance of sub-Arctic Mytilus edulis from the White Sea. Mussels were exposed (2 weeks) to 390 µatm (control) and 1,120 µatm CO2 (year 2100) before respiration rate (MO2), anaerobic metabolite (succinate) level, haemolymph acid-base status, and intracellular pH (pHi) were determined during acute warming (10-28°C, 3°C over night). In normocapnic mussels, warming induced MO2 to rise exponentially until it levelled off beyond a breakpoint temperature of 20.5°C. Concurrently, haemolymph PCO2 rose significantly >19°C followed by a decrease in PO2 indicating the pejus temperature (TP, onset of thermal limitation). Succinate started to accumulate at 28°C under normocapnia defining the critical temperature (TC). pHi was maintained during warming until it dropped at 28°C, in line with the concomitant transition to anaerobiosis. At acclimation temperature, CO2 had only a minor impact. During warming, MO2 was stimulated by CO2 resulting in an elevated breakpoint of 25.8°C. Nevertheless, alterations in haemolymph gases (>16°C) and the concomitant changes of pHi and succinate level (25°C) occurred at lower temperature under hypercapnia versus normocapnia indicating a downward shift of both thermal limits TP and TC by CO2. Compared to temperate conspecifics, sub-Arctic mussels showed an enhanced thermal sensitivity, exacerbated further by hypercapnia, indicating their potential vulnerability to environmental changes projected for 2100. |
format |
Article in Journal/Newspaper |
author |
Zittier, Z. M. C. Bock, Christian Sukhotin, A. A. Häfker, N Sören Pörtner, H. O. |
spellingShingle |
Zittier, Z. M. C. Bock, Christian Sukhotin, A. A. Häfker, N Sören Pörtner, H. O. Impact of ocean acidification on thermal tolerance and acid–base regulation of Mytilus edulis from the White Sea |
author_facet |
Zittier, Z. M. C. Bock, Christian Sukhotin, A. A. Häfker, N Sören Pörtner, H. O. |
author_sort |
Zittier, Z. M. C. |
title |
Impact of ocean acidification on thermal tolerance and acid–base regulation of Mytilus edulis from the White Sea |
title_short |
Impact of ocean acidification on thermal tolerance and acid–base regulation of Mytilus edulis from the White Sea |
title_full |
Impact of ocean acidification on thermal tolerance and acid–base regulation of Mytilus edulis from the White Sea |
title_fullStr |
Impact of ocean acidification on thermal tolerance and acid–base regulation of Mytilus edulis from the White Sea |
title_full_unstemmed |
Impact of ocean acidification on thermal tolerance and acid–base regulation of Mytilus edulis from the White Sea |
title_sort |
impact of ocean acidification on thermal tolerance and acid–base regulation of mytilus edulis from the white sea |
publishDate |
2018 |
url |
https://epic.awi.de/id/eprint/47496/ https://epic.awi.de/id/eprint/47496/1/ZZittier_WS_Mytilus_PolBiol18.pdf https://doi.org/10.1007/s00300-018-2362-x https://hdl.handle.net/10013/epic.c4e95656-fc37-4c85-97d4-bef1d6318f42 |
geographic |
Arctic White Sea |
geographic_facet |
Arctic White Sea |
genre |
Arctic Ocean acidification Polar Biology White Sea |
genre_facet |
Arctic Ocean acidification Polar Biology White Sea |
op_source |
EPIC3Polar Biology, ISSN: 0722-4060 |
op_relation |
https://epic.awi.de/id/eprint/47496/1/ZZittier_WS_Mytilus_PolBiol18.pdf Zittier, Z. M. C. , Bock, C. orcid:0000-0003-0052-3090 , Sukhotin, A. A. , Häfker, N. S. orcid:0000-0002-4883-3656 and Pörtner, H. O. orcid:0000-0001-6535-6575 (2018) Impact of ocean acidification on thermal tolerance and acid–base regulation of Mytilus edulis from the White Sea , Polar Biology . doi:10.1007/s00300-018-2362-x <https://doi.org/10.1007/s00300-018-2362-x> , hdl:10013/epic.c4e95656-fc37-4c85-97d4-bef1d6318f42 |
op_doi |
https://doi.org/10.1007/s00300-018-2362-x |
container_title |
Polar Biology |
container_volume |
41 |
container_issue |
11 |
container_start_page |
2261 |
op_container_end_page |
2273 |
_version_ |
1801372774898335744 |