Host-influenced geochemical signature in the parasitic foraminifera Hyrrokkin sarcophaga
Hyrrokkin sarcophaga is a parasitic foraminifer that is commonly found in cold-water coral reefs where it infests the file clam Acesta excavata and the scleractinian coral Lophelia pertusa. Here, we present measurements of the elemental and isotopic composition of this parasitic foraminifer for the...
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ftunivfrankfurt:oai:publikationen.ub.uni-frankfurt.de:62748 2023-10-09T21:53:23+02:00 Host-influenced geochemical signature in the parasitic foraminifera Hyrrokkin sarcophaga Schleinkofer, Nicolai Evans, David Wisshak, Max Büscher, Janina Fiebig, Jens Freiwald, André Härter, Sven Marschall, Horst R. Voigt, Silke Raddatz, Jacek 2021-03-29 application/octet-stream http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/62748 https://nbn-resolving.org/urn:nbn:de:hebis:30:3-627487 https://doi.org/10.5194/bg-2021-74 http://publikationen.ub.uni-frankfurt.de/files/62748/container.zip eng eng http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/62748 urn:nbn:de:hebis:30:3-627487 https://nbn-resolving.org/urn:nbn:de:hebis:30:3-627487 https://doi.org/10.5194/bg-2021-74 http://publikationen.ub.uni-frankfurt.de/files/62748/container.zip http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/restrictedAccess ddc:550 ddc:570 article doc-type:article 2021 ftunivfrankfurt https://doi.org/10.5194/bg-2021-74 2023-09-17T22:42:08Z Hyrrokkin sarcophaga is a parasitic foraminifer that is commonly found in cold-water coral reefs where it infests the file clam Acesta excavata and the scleractinian coral Lophelia pertusa. Here, we present measurements of the elemental and isotopic composition of this parasitic foraminifer for the first time, analyzed by inductively coupled optical emission spectrometry (ICP-OES), electron probe micro analysis (EPMA) and mass spectrometry (MS). Our results reveal that the geochemical signature of H. sarcophaga depends on the host organism it infests. Sr/Ca ratios are 1.1 mmol mol-1 higher in H. sarcophaga that infest L. pertusa, which could be an indication that dissolved host carbonate material is utilised in shell calcification, given that the aragonite of L. pertusa has a naturally higher Sr concentration compared to the calcite of A. excavata.Similarly, we measure 3.1 ‰ lower δ13C and 0.25 ‰ lower δ18O values in H. sarcophaga that lived on20 L. pertusa, which might be caused by the direct uptake of the host’s carbonate material with a more negative isotopic composition or different pH regimes in these foraminifera (pH can exert a control on the extent of CO2 hydration/hydroxylation) due to the uptake of body fluids of the host. We also observe higher Mn/Ca ratios in foraminifers that lived on A. excavata but did not penetrate the host shell compared to specimen that penetrated the shell, which could be interpreted as a change in food source, changes in the calcification rate, Rayleigh fractionation or changing oxygen conditions. While our measurements provide an interesting insight into the calcification process of this unusual foraminifer, these data also indicate that the geochemistry of this parasitic foraminifer is unlikely to be a reliable indicator of paleoenvironmental conditions using Sr/Ca, Mn/Ca, δ18O or δ13C unless the host organism is known and its geochemical composition can be accounted for. Article in Journal/Newspaper Lophelia pertusa Publication Server of Goethe University Frankfurt am Main |
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Open Polar |
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Publication Server of Goethe University Frankfurt am Main |
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ftunivfrankfurt |
language |
English |
topic |
ddc:550 ddc:570 |
spellingShingle |
ddc:550 ddc:570 Schleinkofer, Nicolai Evans, David Wisshak, Max Büscher, Janina Fiebig, Jens Freiwald, André Härter, Sven Marschall, Horst R. Voigt, Silke Raddatz, Jacek Host-influenced geochemical signature in the parasitic foraminifera Hyrrokkin sarcophaga |
topic_facet |
ddc:550 ddc:570 |
description |
Hyrrokkin sarcophaga is a parasitic foraminifer that is commonly found in cold-water coral reefs where it infests the file clam Acesta excavata and the scleractinian coral Lophelia pertusa. Here, we present measurements of the elemental and isotopic composition of this parasitic foraminifer for the first time, analyzed by inductively coupled optical emission spectrometry (ICP-OES), electron probe micro analysis (EPMA) and mass spectrometry (MS). Our results reveal that the geochemical signature of H. sarcophaga depends on the host organism it infests. Sr/Ca ratios are 1.1 mmol mol-1 higher in H. sarcophaga that infest L. pertusa, which could be an indication that dissolved host carbonate material is utilised in shell calcification, given that the aragonite of L. pertusa has a naturally higher Sr concentration compared to the calcite of A. excavata.Similarly, we measure 3.1 ‰ lower δ13C and 0.25 ‰ lower δ18O values in H. sarcophaga that lived on20 L. pertusa, which might be caused by the direct uptake of the host’s carbonate material with a more negative isotopic composition or different pH regimes in these foraminifera (pH can exert a control on the extent of CO2 hydration/hydroxylation) due to the uptake of body fluids of the host. We also observe higher Mn/Ca ratios in foraminifers that lived on A. excavata but did not penetrate the host shell compared to specimen that penetrated the shell, which could be interpreted as a change in food source, changes in the calcification rate, Rayleigh fractionation or changing oxygen conditions. While our measurements provide an interesting insight into the calcification process of this unusual foraminifer, these data also indicate that the geochemistry of this parasitic foraminifer is unlikely to be a reliable indicator of paleoenvironmental conditions using Sr/Ca, Mn/Ca, δ18O or δ13C unless the host organism is known and its geochemical composition can be accounted for. |
format |
Article in Journal/Newspaper |
author |
Schleinkofer, Nicolai Evans, David Wisshak, Max Büscher, Janina Fiebig, Jens Freiwald, André Härter, Sven Marschall, Horst R. Voigt, Silke Raddatz, Jacek |
author_facet |
Schleinkofer, Nicolai Evans, David Wisshak, Max Büscher, Janina Fiebig, Jens Freiwald, André Härter, Sven Marschall, Horst R. Voigt, Silke Raddatz, Jacek |
author_sort |
Schleinkofer, Nicolai |
title |
Host-influenced geochemical signature in the parasitic foraminifera Hyrrokkin sarcophaga |
title_short |
Host-influenced geochemical signature in the parasitic foraminifera Hyrrokkin sarcophaga |
title_full |
Host-influenced geochemical signature in the parasitic foraminifera Hyrrokkin sarcophaga |
title_fullStr |
Host-influenced geochemical signature in the parasitic foraminifera Hyrrokkin sarcophaga |
title_full_unstemmed |
Host-influenced geochemical signature in the parasitic foraminifera Hyrrokkin sarcophaga |
title_sort |
host-influenced geochemical signature in the parasitic foraminifera hyrrokkin sarcophaga |
publishDate |
2021 |
url |
http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/62748 https://nbn-resolving.org/urn:nbn:de:hebis:30:3-627487 https://doi.org/10.5194/bg-2021-74 http://publikationen.ub.uni-frankfurt.de/files/62748/container.zip |
genre |
Lophelia pertusa |
genre_facet |
Lophelia pertusa |
op_relation |
http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/62748 urn:nbn:de:hebis:30:3-627487 https://nbn-resolving.org/urn:nbn:de:hebis:30:3-627487 https://doi.org/10.5194/bg-2021-74 http://publikationen.ub.uni-frankfurt.de/files/62748/container.zip |
op_rights |
http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.5194/bg-2021-74 |
_version_ |
1779316633764888576 |