Freshening increases the susceptibility to heat stress in intertidal mussels ( Mytilus edulis ) from the Arctic
Temperatures in the Arctic are increasing at a faster pace than at lower latitudes resulting in range expansion of boreal species. In Greenland, the warming also drives accelerating melt of the Greenland Ice Sheet resulting in more meltwater entering Greenland fjords in summer. Our aim was to determ...
Published in: | Journal of Animal Ecology |
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Format: | Article in Journal/Newspaper |
Language: | English |
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2021
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Online Access: | https://pure.au.dk/portal/da/publications/freshening-increases-the-susceptibility-to-heat-stress-in-intertidal-mussels-mytilus-edulis-from-the-arctic(57495ba7-1a8d-42fd-ba59-81ffcb3a095f).html https://doi.org/10.1111/1365-2656.13472 https://pure.au.dk/ws/files/218321564/1365_2656.13472_2.pdf |
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ftuniaarhuspubl:oai:pure.atira.dk:publications/57495ba7-1a8d-42fd-ba59-81ffcb3a095f 2023-05-15T14:25:14+02:00 Freshening increases the susceptibility to heat stress in intertidal mussels ( Mytilus edulis ) from the Arctic Nielsen, Martin B. Vogensen, Trine K. Thyrring, Jakob Sørensen, Jesper G. Sejr, Mikael K. 2021-06 application/pdf https://pure.au.dk/portal/da/publications/freshening-increases-the-susceptibility-to-heat-stress-in-intertidal-mussels-mytilus-edulis-from-the-arctic(57495ba7-1a8d-42fd-ba59-81ffcb3a095f).html https://doi.org/10.1111/1365-2656.13472 https://pure.au.dk/ws/files/218321564/1365_2656.13472_2.pdf eng eng info:eu-repo/semantics/openAccess Nielsen , M B , Vogensen , T K , Thyrring , J , Sørensen , J G & Sejr , M K 2021 , ' Freshening increases the susceptibility to heat stress in intertidal mussels ( Mytilus edulis ) from the Arctic ' , Journal of Animal Ecology , vol. 90 , no. 6 , pp. 1515-1524 . https://doi.org/10.1111/1365-2656.13472 blue mussels Greenland heat shock proteins littoral multiple stressors salinity temperature thermal stress article 2021 ftuniaarhuspubl https://doi.org/10.1111/1365-2656.13472 2021-06-16T22:44:50Z Temperatures in the Arctic are increasing at a faster pace than at lower latitudes resulting in range expansion of boreal species. In Greenland, the warming also drives accelerating melt of the Greenland Ice Sheet resulting in more meltwater entering Greenland fjords in summer. Our aim was to determine if increasing summer temperatures combined with lower salinity can induce the expression of stress-related proteins, for example, heat shock protein, in boreal intertidal mussels in Greenland, and whether low salinity reduces the upper thermal limit at which mortality occurs. We conducted a mortality experiment, using 12 different combinations of salinity and air temperature treatments during a simulated tidal regime, and quantified the change in mRNA levels of five stress-related genes (hsp24, hsp70, hsp90, sod and p38) in surviving mussels to discern the level of sublethal stress. Heat-induced mortality occurred in mussels exposed to an air temperature of 30°C and mortality was higher in treatments with lowered salinity (5 and 15‰), which confirms that low habitat salinity decreases the upper thermal limit of Mytilus edulis. The gene expression analysis supported the mortality results, with the highest gene expression found at combinations of high temperature and low salinity. Combined with seasonal measurements of intertidal temperatures in Greenland, we suggest heat stress occurs in low salinity intertidal area, and that further lowered salinity in coastal water due to increased run-off can make intertidal bivalves more susceptible to summer heat stress. This study thus provides an example of how different impacts of climate warming can work synergistically to stress marine organisms. Article in Journal/Newspaper Arctic Arctic Greenland Ice Sheet Aarhus University: Research Arctic Greenland Journal of Animal Ecology 90 6 1515 1524 |
institution |
Open Polar |
collection |
Aarhus University: Research |
op_collection_id |
ftuniaarhuspubl |
language |
English |
topic |
blue mussels Greenland heat shock proteins littoral multiple stressors salinity temperature thermal stress |
spellingShingle |
blue mussels Greenland heat shock proteins littoral multiple stressors salinity temperature thermal stress Nielsen, Martin B. Vogensen, Trine K. Thyrring, Jakob Sørensen, Jesper G. Sejr, Mikael K. Freshening increases the susceptibility to heat stress in intertidal mussels ( Mytilus edulis ) from the Arctic |
topic_facet |
blue mussels Greenland heat shock proteins littoral multiple stressors salinity temperature thermal stress |
description |
Temperatures in the Arctic are increasing at a faster pace than at lower latitudes resulting in range expansion of boreal species. In Greenland, the warming also drives accelerating melt of the Greenland Ice Sheet resulting in more meltwater entering Greenland fjords in summer. Our aim was to determine if increasing summer temperatures combined with lower salinity can induce the expression of stress-related proteins, for example, heat shock protein, in boreal intertidal mussels in Greenland, and whether low salinity reduces the upper thermal limit at which mortality occurs. We conducted a mortality experiment, using 12 different combinations of salinity and air temperature treatments during a simulated tidal regime, and quantified the change in mRNA levels of five stress-related genes (hsp24, hsp70, hsp90, sod and p38) in surviving mussels to discern the level of sublethal stress. Heat-induced mortality occurred in mussels exposed to an air temperature of 30°C and mortality was higher in treatments with lowered salinity (5 and 15‰), which confirms that low habitat salinity decreases the upper thermal limit of Mytilus edulis. The gene expression analysis supported the mortality results, with the highest gene expression found at combinations of high temperature and low salinity. Combined with seasonal measurements of intertidal temperatures in Greenland, we suggest heat stress occurs in low salinity intertidal area, and that further lowered salinity in coastal water due to increased run-off can make intertidal bivalves more susceptible to summer heat stress. This study thus provides an example of how different impacts of climate warming can work synergistically to stress marine organisms. |
format |
Article in Journal/Newspaper |
author |
Nielsen, Martin B. Vogensen, Trine K. Thyrring, Jakob Sørensen, Jesper G. Sejr, Mikael K. |
author_facet |
Nielsen, Martin B. Vogensen, Trine K. Thyrring, Jakob Sørensen, Jesper G. Sejr, Mikael K. |
author_sort |
Nielsen, Martin B. |
title |
Freshening increases the susceptibility to heat stress in intertidal mussels ( Mytilus edulis ) from the Arctic |
title_short |
Freshening increases the susceptibility to heat stress in intertidal mussels ( Mytilus edulis ) from the Arctic |
title_full |
Freshening increases the susceptibility to heat stress in intertidal mussels ( Mytilus edulis ) from the Arctic |
title_fullStr |
Freshening increases the susceptibility to heat stress in intertidal mussels ( Mytilus edulis ) from the Arctic |
title_full_unstemmed |
Freshening increases the susceptibility to heat stress in intertidal mussels ( Mytilus edulis ) from the Arctic |
title_sort |
freshening increases the susceptibility to heat stress in intertidal mussels ( mytilus edulis ) from the arctic |
publishDate |
2021 |
url |
https://pure.au.dk/portal/da/publications/freshening-increases-the-susceptibility-to-heat-stress-in-intertidal-mussels-mytilus-edulis-from-the-arctic(57495ba7-1a8d-42fd-ba59-81ffcb3a095f).html https://doi.org/10.1111/1365-2656.13472 https://pure.au.dk/ws/files/218321564/1365_2656.13472_2.pdf |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic Arctic Greenland Ice Sheet |
genre_facet |
Arctic Arctic Greenland Ice Sheet |
op_source |
Nielsen , M B , Vogensen , T K , Thyrring , J , Sørensen , J G & Sejr , M K 2021 , ' Freshening increases the susceptibility to heat stress in intertidal mussels ( Mytilus edulis ) from the Arctic ' , Journal of Animal Ecology , vol. 90 , no. 6 , pp. 1515-1524 . https://doi.org/10.1111/1365-2656.13472 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1111/1365-2656.13472 |
container_title |
Journal of Animal Ecology |
container_volume |
90 |
container_issue |
6 |
container_start_page |
1515 |
op_container_end_page |
1524 |
_version_ |
1766297667426582528 |