Seawater pH Predicted for the Year 2100 Affects the Metabolic Response to Feeding in Copepodites of the Arctic Copepod Calanus glacialis
Widespread ocean acidification (OA) is transforming the chemistry of the global ocean, and the Arctic is recognised as a region where the earliest and strongest impacts of OA are expected. In the present study, metabolic effects of OA and its interaction with food availability was investigated in Ca...
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ftpubmed:oai:pubmedcentral.nih.gov:5167424 2023-05-15T14:30:34+02:00 Seawater pH Predicted for the Year 2100 Affects the Metabolic Response to Feeding in Copepodites of the Arctic Copepod Calanus glacialis Thor, Peter Bailey, Allison Halsband, Claudia Guscelli, Ella Gorokhova, Elena Fransson, Agneta 2016-12-19 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5167424/ http://www.ncbi.nlm.nih.gov/pubmed/27992579 https://doi.org/10.1371/journal.pone.0168735 en eng Public Library of Science http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5167424/ http://www.ncbi.nlm.nih.gov/pubmed/27992579 http://dx.doi.org/10.1371/journal.pone.0168735 © 2016 Thor et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. CC-BY Research Article Text 2016 ftpubmed https://doi.org/10.1371/journal.pone.0168735 2017-01-08T01:23:46Z Widespread ocean acidification (OA) is transforming the chemistry of the global ocean, and the Arctic is recognised as a region where the earliest and strongest impacts of OA are expected. In the present study, metabolic effects of OA and its interaction with food availability was investigated in Calanus glacialis from the Kongsfjord, West Spitsbergen. We measured metabolic rates and RNA/DNA ratios (an indicator of biosynthesis) concurrently in fed and unfed individuals of copepodite stages CII-CIII and CV subjected to two different pH levels representative of present day and the “business as usual” IPCC scenario (RCP8.5) prediction for the year 2100. The copepods responded more strongly to changes in food level than to decreasing pH, both with respect to metabolic rate and RNA/DNA ratio. However, significant interactions between effects of pH and food level showed that effects of pH and food level act in synergy in copepodites of C. glacialis. While metabolic rates in copepodites stage CII-CIII increased by 78% as a response to food under present day conditions (high pH), the increase was 195% in CII-CIIIs kept at low pH—a 2.5 times greater increase. This interaction was absent for RNA/DNA, so the increase in metabolic rates were clearly not a reaction to changing biosynthesis at low pH per se but rather a reaction to increased metabolic costs per unit of biosynthesis. Interestingly, we did not observe this difference in costs of growth in stage CV. A 2.5 times increase in metabolic costs of growth will leave the copepodites with much less energy for growth. This may infer significant changes to the C. glacialis population during future OA. Text Arctic copepod Arctic Calanus glacialis Kongsfjord* Ocean acidification Copepods Spitsbergen PubMed Central (PMC) Arctic Kongsfjord ENVELOPE(29.319,29.319,70.721,70.721) PLOS ONE 11 12 e0168735 |
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Research Article Thor, Peter Bailey, Allison Halsband, Claudia Guscelli, Ella Gorokhova, Elena Fransson, Agneta Seawater pH Predicted for the Year 2100 Affects the Metabolic Response to Feeding in Copepodites of the Arctic Copepod Calanus glacialis |
topic_facet |
Research Article |
description |
Widespread ocean acidification (OA) is transforming the chemistry of the global ocean, and the Arctic is recognised as a region where the earliest and strongest impacts of OA are expected. In the present study, metabolic effects of OA and its interaction with food availability was investigated in Calanus glacialis from the Kongsfjord, West Spitsbergen. We measured metabolic rates and RNA/DNA ratios (an indicator of biosynthesis) concurrently in fed and unfed individuals of copepodite stages CII-CIII and CV subjected to two different pH levels representative of present day and the “business as usual” IPCC scenario (RCP8.5) prediction for the year 2100. The copepods responded more strongly to changes in food level than to decreasing pH, both with respect to metabolic rate and RNA/DNA ratio. However, significant interactions between effects of pH and food level showed that effects of pH and food level act in synergy in copepodites of C. glacialis. While metabolic rates in copepodites stage CII-CIII increased by 78% as a response to food under present day conditions (high pH), the increase was 195% in CII-CIIIs kept at low pH—a 2.5 times greater increase. This interaction was absent for RNA/DNA, so the increase in metabolic rates were clearly not a reaction to changing biosynthesis at low pH per se but rather a reaction to increased metabolic costs per unit of biosynthesis. Interestingly, we did not observe this difference in costs of growth in stage CV. A 2.5 times increase in metabolic costs of growth will leave the copepodites with much less energy for growth. This may infer significant changes to the C. glacialis population during future OA. |
format |
Text |
author |
Thor, Peter Bailey, Allison Halsband, Claudia Guscelli, Ella Gorokhova, Elena Fransson, Agneta |
author_facet |
Thor, Peter Bailey, Allison Halsband, Claudia Guscelli, Ella Gorokhova, Elena Fransson, Agneta |
author_sort |
Thor, Peter |
title |
Seawater pH Predicted for the Year 2100 Affects the Metabolic Response to Feeding in Copepodites of the Arctic Copepod Calanus glacialis |
title_short |
Seawater pH Predicted for the Year 2100 Affects the Metabolic Response to Feeding in Copepodites of the Arctic Copepod Calanus glacialis |
title_full |
Seawater pH Predicted for the Year 2100 Affects the Metabolic Response to Feeding in Copepodites of the Arctic Copepod Calanus glacialis |
title_fullStr |
Seawater pH Predicted for the Year 2100 Affects the Metabolic Response to Feeding in Copepodites of the Arctic Copepod Calanus glacialis |
title_full_unstemmed |
Seawater pH Predicted for the Year 2100 Affects the Metabolic Response to Feeding in Copepodites of the Arctic Copepod Calanus glacialis |
title_sort |
seawater ph predicted for the year 2100 affects the metabolic response to feeding in copepodites of the arctic copepod calanus glacialis |
publisher |
Public Library of Science |
publishDate |
2016 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5167424/ http://www.ncbi.nlm.nih.gov/pubmed/27992579 https://doi.org/10.1371/journal.pone.0168735 |
long_lat |
ENVELOPE(29.319,29.319,70.721,70.721) |
geographic |
Arctic Kongsfjord |
geographic_facet |
Arctic Kongsfjord |
genre |
Arctic copepod Arctic Calanus glacialis Kongsfjord* Ocean acidification Copepods Spitsbergen |
genre_facet |
Arctic copepod Arctic Calanus glacialis Kongsfjord* Ocean acidification Copepods Spitsbergen |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5167424/ http://www.ncbi.nlm.nih.gov/pubmed/27992579 http://dx.doi.org/10.1371/journal.pone.0168735 |
op_rights |
© 2016 Thor et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1371/journal.pone.0168735 |
container_title |
PLOS ONE |
container_volume |
11 |
container_issue |
12 |
container_start_page |
e0168735 |
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1766304389091295232 |