Membrane lipid sensitivity to ocean warming and acidification poses a severe threat to Arctic pteropods
Ocean warming and acidification will be most pronounced in the Arctic. Both phenomena severely threat thecosome pteropods (holoplanktonic marine gastropods) by reducing their survival (warming) and causing dissolution of their aragonitic shell (acidification). Lipids, particularly phospholipids, pla...
Published in: | Frontiers in Marine Science |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Online Access: | https://oceanrep.geomar.de/id/eprint/56701/ https://oceanrep.geomar.de/id/eprint/56701/2/Lischka_Greenacre_2022.pdf https://oceanrep.geomar.de/id/eprint/56701/1/Data%20Sheet%201.PDF https://www.frontiersin.org/articles/10.3389/fmars.2022.920163/full https://doi.org/10.3389/fmars.2022.920163 |
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ftoceanrep:oai:oceanrep.geomar.de:56701 2024-02-11T09:59:36+01:00 Membrane lipid sensitivity to ocean warming and acidification poses a severe threat to Arctic pteropods Lischka, Silke Greenacre, Michael J. Riebesell, Ulf Graeve, Martin 2022-08-11 text https://oceanrep.geomar.de/id/eprint/56701/ https://oceanrep.geomar.de/id/eprint/56701/2/Lischka_Greenacre_2022.pdf https://oceanrep.geomar.de/id/eprint/56701/1/Data%20Sheet%201.PDF https://www.frontiersin.org/articles/10.3389/fmars.2022.920163/full https://doi.org/10.3389/fmars.2022.920163 en eng Frontiers https://oceanrep.geomar.de/id/eprint/56701/2/Lischka_Greenacre_2022.pdf https://oceanrep.geomar.de/id/eprint/56701/1/Data%20Sheet%201.PDF Lischka, S. , Greenacre, M. J., Riebesell, U. and Graeve, M. (2022) Membrane lipid sensitivity to ocean warming and acidification poses a severe threat to Arctic pteropods. Open Access Frontiers in Marine Science, 9 . Art.Nr. 920163. DOI 10.3389/fmars.2022.920163 <https://doi.org/10.3389/fmars.2022.920163>. doi:10.3389/fmars.2022.920163 cc_by_4.0 info:eu-repo/semantics/openAccess Article PeerReviewed 2022 ftoceanrep https://doi.org/10.3389/fmars.2022.920163 2024-01-15T00:25:40Z Ocean warming and acidification will be most pronounced in the Arctic. Both phenomena severely threat thecosome pteropods (holoplanktonic marine gastropods) by reducing their survival (warming) and causing dissolution of their aragonitic shell (acidification). Lipids, particularly phospholipids, play a major role in veligers and juveniles of the polar thecosome pteropod \textit{Limacina helicina} (Phipps 1774) comprising over two thirds of their total lipids. Membrane lipids (phospholipids) are important in temperature acclimation of ectotherms. Hence, we experimentally investigated ocean warming and acidification effects on total lipids, lipid classes and fatty acids of Arctic early-stage \textit{L. helicina}. Temperature and pCO\textsubscript{2} treatments chosen resembled Representative Concentration Pathway model scenarios for this century. We found a massive decrease of total lipids at elevated temperature and at the highest CO\textsubscript{2} concentration (1100 $\mu$atm) of the \textit{in situ} temperature. Clearly, temperature was the overriding factor. Total lipids were reduced by 47--70\%, mainly caused by a reduction of phospholipids by up to 60\%. Further, based on pH\textsubscript{T} development in the incubation water of pteropods during the experiment, some evidence exists for metabolic downregulation (shutdown?) in pteropods at high factor levels of temperature and pCO\textsubscript{2}. Consequently, cell differentiation and energy balance of early-stage larvae was probably severely compromised. Comparison of our experimental with 'wild' organisms suggests phospholipid reduction to values clearly outside natural variability. Based on the well-known significance of phospholipids for membranogenesis, early development, and reproduction, negative warming effects on such a basal metabolic function may be a much more immediate threat for pteropods than so far anticipated shell dissolution effects due to acidification. Article in Journal/Newspaper Arctic Arctic arctic pteropods Limacina helicina OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Arctic Frontiers in Marine Science 9 |
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Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
Ocean warming and acidification will be most pronounced in the Arctic. Both phenomena severely threat thecosome pteropods (holoplanktonic marine gastropods) by reducing their survival (warming) and causing dissolution of their aragonitic shell (acidification). Lipids, particularly phospholipids, play a major role in veligers and juveniles of the polar thecosome pteropod \textit{Limacina helicina} (Phipps 1774) comprising over two thirds of their total lipids. Membrane lipids (phospholipids) are important in temperature acclimation of ectotherms. Hence, we experimentally investigated ocean warming and acidification effects on total lipids, lipid classes and fatty acids of Arctic early-stage \textit{L. helicina}. Temperature and pCO\textsubscript{2} treatments chosen resembled Representative Concentration Pathway model scenarios for this century. We found a massive decrease of total lipids at elevated temperature and at the highest CO\textsubscript{2} concentration (1100 $\mu$atm) of the \textit{in situ} temperature. Clearly, temperature was the overriding factor. Total lipids were reduced by 47--70\%, mainly caused by a reduction of phospholipids by up to 60\%. Further, based on pH\textsubscript{T} development in the incubation water of pteropods during the experiment, some evidence exists for metabolic downregulation (shutdown?) in pteropods at high factor levels of temperature and pCO\textsubscript{2}. Consequently, cell differentiation and energy balance of early-stage larvae was probably severely compromised. Comparison of our experimental with 'wild' organisms suggests phospholipid reduction to values clearly outside natural variability. Based on the well-known significance of phospholipids for membranogenesis, early development, and reproduction, negative warming effects on such a basal metabolic function may be a much more immediate threat for pteropods than so far anticipated shell dissolution effects due to acidification. |
format |
Article in Journal/Newspaper |
author |
Lischka, Silke Greenacre, Michael J. Riebesell, Ulf Graeve, Martin |
spellingShingle |
Lischka, Silke Greenacre, Michael J. Riebesell, Ulf Graeve, Martin Membrane lipid sensitivity to ocean warming and acidification poses a severe threat to Arctic pteropods |
author_facet |
Lischka, Silke Greenacre, Michael J. Riebesell, Ulf Graeve, Martin |
author_sort |
Lischka, Silke |
title |
Membrane lipid sensitivity to ocean warming and acidification poses a severe threat to Arctic pteropods |
title_short |
Membrane lipid sensitivity to ocean warming and acidification poses a severe threat to Arctic pteropods |
title_full |
Membrane lipid sensitivity to ocean warming and acidification poses a severe threat to Arctic pteropods |
title_fullStr |
Membrane lipid sensitivity to ocean warming and acidification poses a severe threat to Arctic pteropods |
title_full_unstemmed |
Membrane lipid sensitivity to ocean warming and acidification poses a severe threat to Arctic pteropods |
title_sort |
membrane lipid sensitivity to ocean warming and acidification poses a severe threat to arctic pteropods |
publisher |
Frontiers |
publishDate |
2022 |
url |
https://oceanrep.geomar.de/id/eprint/56701/ https://oceanrep.geomar.de/id/eprint/56701/2/Lischka_Greenacre_2022.pdf https://oceanrep.geomar.de/id/eprint/56701/1/Data%20Sheet%201.PDF https://www.frontiersin.org/articles/10.3389/fmars.2022.920163/full https://doi.org/10.3389/fmars.2022.920163 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Arctic arctic pteropods Limacina helicina |
genre_facet |
Arctic Arctic arctic pteropods Limacina helicina |
op_relation |
https://oceanrep.geomar.de/id/eprint/56701/2/Lischka_Greenacre_2022.pdf https://oceanrep.geomar.de/id/eprint/56701/1/Data%20Sheet%201.PDF Lischka, S. , Greenacre, M. J., Riebesell, U. and Graeve, M. (2022) Membrane lipid sensitivity to ocean warming and acidification poses a severe threat to Arctic pteropods. Open Access Frontiers in Marine Science, 9 . Art.Nr. 920163. DOI 10.3389/fmars.2022.920163 <https://doi.org/10.3389/fmars.2022.920163>. doi:10.3389/fmars.2022.920163 |
op_rights |
cc_by_4.0 info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.3389/fmars.2022.920163 |
container_title |
Frontiers in Marine Science |
container_volume |
9 |
_version_ |
1790595427057270784 |