A positive temperature-dependent effect of elevated CO 2 on growth and lipid accumulation in the planktonic copepod, Calanus finmarchicus
Calanus finmarchicus were reared from eggs to adults at 12°C and 16°C with non-limiting food in combination with ambient (600 μatm) and high (1100 μatm) pCO2. These conditions are likely to be encountered by the species at the southern margins of its biogeographical range by the end of the century....
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ftimr:oai:imr.brage.unit.no:11250/3057039 2023-05-15T15:47:57+02:00 A positive temperature-dependent effect of elevated CO 2 on growth and lipid accumulation in the planktonic copepod, Calanus finmarchicus Fields, David M. Runge, Jeffrey A. Thompson, Cameron Durif, Caroline Shema, Steven D. Bjelland, Reidun Marie Niemisto, Maura Arts, Michael T. Skiftesvik, Anne Berit Browman, Howard 2022 application/pdf https://hdl.handle.net/11250/3057039 https://doi.org/10.1002/lno.12261 eng eng Havforskningsinstituttet: 14591-02 Limnology and Oceanography. 2022, . urn:issn:0024-3590 https://hdl.handle.net/11250/3057039 https://doi.org/10.1002/lno.12261 cristin:2093272 14 Limnology and Oceanography Peer reviewed Journal article 2022 ftimr https://doi.org/10.1002/lno.12261 2023-03-15T23:44:41Z Calanus finmarchicus were reared from eggs to adults at 12°C and 16°C with non-limiting food in combination with ambient (600 μatm) and high (1100 μatm) pCO2. These conditions are likely to be encountered by the species at the southern margins of its biogeographical range by the end of the century. Dry weight (DW), carbon (C) and nitrogen (N) mass, oil-sac volume (OSV), fatty acid composition (FA), and oxygen consumption rates (OCR) were measured on newly molted stage CV copepodites and recently molted adult females. By focusing our measurements on these precise events in the life cycle, we were able to obtain a more accurate comparison of growth and respiration across treatments. Copepods raised at 12°C had a significantly greater DW, OSV, and C and N mass than those raised at 16°C High pCO2, independent of temperature, was associated with a further increase in the DW and C content of the copepods. Interactive effects of temperature and pCO2 resulted in a larger OSV at low temperature and high pCO2. Mass-specific respiration rates were significantly lower at lower temperatures and elevated pCO2 suggesting that the increase in mass (DW, C, and OSV) resulted from reduced metabolic cost. The composition of fatty acids in the copepods varied mainly with temperature. Two fatty acids varied with pCO2: 16:0 tended to decrease with higher pCO2 and 18:3n−3 tended to increase with higher pCO2. These observations suggest that elevated pCO2/lower pH in future oceans may have a beneficial effect on C. finmarchicus. publishedVersion Article in Journal/Newspaper Calanus finmarchicus Copepods Institute for Marine Research: Brage IMR Limnology and Oceanography |
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Open Polar |
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Institute for Marine Research: Brage IMR |
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ftimr |
language |
English |
description |
Calanus finmarchicus were reared from eggs to adults at 12°C and 16°C with non-limiting food in combination with ambient (600 μatm) and high (1100 μatm) pCO2. These conditions are likely to be encountered by the species at the southern margins of its biogeographical range by the end of the century. Dry weight (DW), carbon (C) and nitrogen (N) mass, oil-sac volume (OSV), fatty acid composition (FA), and oxygen consumption rates (OCR) were measured on newly molted stage CV copepodites and recently molted adult females. By focusing our measurements on these precise events in the life cycle, we were able to obtain a more accurate comparison of growth and respiration across treatments. Copepods raised at 12°C had a significantly greater DW, OSV, and C and N mass than those raised at 16°C High pCO2, independent of temperature, was associated with a further increase in the DW and C content of the copepods. Interactive effects of temperature and pCO2 resulted in a larger OSV at low temperature and high pCO2. Mass-specific respiration rates were significantly lower at lower temperatures and elevated pCO2 suggesting that the increase in mass (DW, C, and OSV) resulted from reduced metabolic cost. The composition of fatty acids in the copepods varied mainly with temperature. Two fatty acids varied with pCO2: 16:0 tended to decrease with higher pCO2 and 18:3n−3 tended to increase with higher pCO2. These observations suggest that elevated pCO2/lower pH in future oceans may have a beneficial effect on C. finmarchicus. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Fields, David M. Runge, Jeffrey A. Thompson, Cameron Durif, Caroline Shema, Steven D. Bjelland, Reidun Marie Niemisto, Maura Arts, Michael T. Skiftesvik, Anne Berit Browman, Howard |
spellingShingle |
Fields, David M. Runge, Jeffrey A. Thompson, Cameron Durif, Caroline Shema, Steven D. Bjelland, Reidun Marie Niemisto, Maura Arts, Michael T. Skiftesvik, Anne Berit Browman, Howard A positive temperature-dependent effect of elevated CO 2 on growth and lipid accumulation in the planktonic copepod, Calanus finmarchicus |
author_facet |
Fields, David M. Runge, Jeffrey A. Thompson, Cameron Durif, Caroline Shema, Steven D. Bjelland, Reidun Marie Niemisto, Maura Arts, Michael T. Skiftesvik, Anne Berit Browman, Howard |
author_sort |
Fields, David M. |
title |
A positive temperature-dependent effect of elevated CO 2 on growth and lipid accumulation in the planktonic copepod, Calanus finmarchicus |
title_short |
A positive temperature-dependent effect of elevated CO 2 on growth and lipid accumulation in the planktonic copepod, Calanus finmarchicus |
title_full |
A positive temperature-dependent effect of elevated CO 2 on growth and lipid accumulation in the planktonic copepod, Calanus finmarchicus |
title_fullStr |
A positive temperature-dependent effect of elevated CO 2 on growth and lipid accumulation in the planktonic copepod, Calanus finmarchicus |
title_full_unstemmed |
A positive temperature-dependent effect of elevated CO 2 on growth and lipid accumulation in the planktonic copepod, Calanus finmarchicus |
title_sort |
positive temperature-dependent effect of elevated co 2 on growth and lipid accumulation in the planktonic copepod, calanus finmarchicus |
publishDate |
2022 |
url |
https://hdl.handle.net/11250/3057039 https://doi.org/10.1002/lno.12261 |
genre |
Calanus finmarchicus Copepods |
genre_facet |
Calanus finmarchicus Copepods |
op_source |
14 Limnology and Oceanography |
op_relation |
Havforskningsinstituttet: 14591-02 Limnology and Oceanography. 2022, . urn:issn:0024-3590 https://hdl.handle.net/11250/3057039 https://doi.org/10.1002/lno.12261 cristin:2093272 |
op_doi |
https://doi.org/10.1002/lno.12261 |
container_title |
Limnology and Oceanography |
_version_ |
1766382926708080640 |