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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ftdoajarticles:oai:doaj.org/article:69297ce61194431895b7f9c024b2a03e 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. Peter Thor Allison Bailey Claudia Halsband Ella Guscelli Elena Gorokhova Agneta Fransson 2016-01-01T00:00:00Z https://doi.org/10.1371/journal.pone.0168735 https://doaj.org/article/69297ce61194431895b7f9c024b2a03e EN eng Public Library of Science (PLoS) http://europepmc.org/articles/PMC5167424?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0168735 https://doaj.org/article/69297ce61194431895b7f9c024b2a03e PLoS ONE, Vol 11, Iss 12, p e0168735 (2016) Medicine R Science Q article 2016 ftdoajarticles https://doi.org/10.1371/journal.pone.0168735 2022-12-31T10:40:21Z 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. Article in Journal/Newspaper Arctic copepod Arctic Calanus glacialis Kongsfjord* Ocean acidification Copepods Spitsbergen Directory of Open Access Journals: DOAJ Articles Arctic Kongsfjord ENVELOPE(29.319,29.319,70.721,70.721) PLOS ONE 11 12 e0168735 |
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English |
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Medicine R Science Q |
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Medicine R Science Q Peter Thor Allison Bailey Claudia Halsband Ella Guscelli Elena Gorokhova Agneta Fransson Seawater pH Predicted for the Year 2100 Affects the Metabolic Response to Feeding in Copepodites of the Arctic Copepod Calanus glacialis. |
topic_facet |
Medicine R Science Q |
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 |
Article in Journal/Newspaper |
author |
Peter Thor Allison Bailey Claudia Halsband Ella Guscelli Elena Gorokhova Agneta Fransson |
author_facet |
Peter Thor Allison Bailey Claudia Halsband Ella Guscelli Elena Gorokhova Agneta Fransson |
author_sort |
Peter Thor |
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 (PLoS) |
publishDate |
2016 |
url |
https://doi.org/10.1371/journal.pone.0168735 https://doaj.org/article/69297ce61194431895b7f9c024b2a03e |
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_source |
PLoS ONE, Vol 11, Iss 12, p e0168735 (2016) |
op_relation |
http://europepmc.org/articles/PMC5167424?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0168735 https://doaj.org/article/69297ce61194431895b7f9c024b2a03e |
op_doi |
https://doi.org/10.1371/journal.pone.0168735 |
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PLOS ONE |
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11 |
container_issue |
12 |
container_start_page |
e0168735 |
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