Antarctic urchin Ctenocidaris speciosa spines: lessons from the deep
Ocean acidification is leading to changes in the oceanic carbonate system. As a result, calcium carbonate saturation horizon is shallowing, especially at high latitudes. Biogenic high magnesium-calcites could be particularly vulnerable, since their solubility is either similar or greater than that o...
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2013
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ftdatacite:10.21411/cbm.a.cf35bbbd 2023-05-15T13:59:13+02:00 Antarctic urchin Ctenocidaris speciosa spines: lessons from the deep CATARINO, Ana I. GUIBOURT, Virginie MOUREAUX, Claire DE RIDDER, Chantal COMPERE, Philippe DUBOIS, Philippe 2013 https://dx.doi.org/10.21411/cbm.a.cf35bbbd http://application.sb-roscoff.fr/cbm/doi/10.21411/CBM.A.CF35BBBD unknown Station Biologique de Roscoff (SBR) https://dx.doi.org/10.21411/cbm.i.e1a05b5f Text Article article-journal ScholarlyArticle 2013 ftdatacite https://doi.org/10.21411/cbm.a.cf35bbbd https://doi.org/10.21411/cbm.i.e1a05b5f 2021-11-05T12:55:41Z Ocean acidification is leading to changes in the oceanic carbonate system. As a result, calcium carbonate saturation horizon is shallowing, especially at high latitudes. Biogenic high magnesium-calcites could be particularly vulnerable, since their solubility is either similar or greater than that of aragonite. Cidaroid urchins have magnesium-calcite spines covered by a polycrystalline cortex which becomes exposed to seawater when mature (not covered by an epidermis). However, deep species live at low calcium carbonate saturation states, especially at high latitudes. We describe here the morphology and the magnesium content of Ctenocidaris speciosa spines collected at different depths from the Weddell Sea (Antarctica) and relate the features with seawater calcium carbonate saturation. We observed that the spines cortex of C. speciosa presented a thicker inner cortex layer and a lower [Mg2+] below the aragonite saturation horizon. We suggest that the cortex of cidaroid spines is able to resist to low calcium carbonate saturation state. Text Antarc* Antarctic Antarctica Ocean acidification Weddell Sea DataCite Metadata Store (German National Library of Science and Technology) Antarctic Weddell Sea Weddell |
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Ocean acidification is leading to changes in the oceanic carbonate system. As a result, calcium carbonate saturation horizon is shallowing, especially at high latitudes. Biogenic high magnesium-calcites could be particularly vulnerable, since their solubility is either similar or greater than that of aragonite. Cidaroid urchins have magnesium-calcite spines covered by a polycrystalline cortex which becomes exposed to seawater when mature (not covered by an epidermis). However, deep species live at low calcium carbonate saturation states, especially at high latitudes. We describe here the morphology and the magnesium content of Ctenocidaris speciosa spines collected at different depths from the Weddell Sea (Antarctica) and relate the features with seawater calcium carbonate saturation. We observed that the spines cortex of C. speciosa presented a thicker inner cortex layer and a lower [Mg2+] below the aragonite saturation horizon. We suggest that the cortex of cidaroid spines is able to resist to low calcium carbonate saturation state. |
format |
Text |
author |
CATARINO, Ana I. GUIBOURT, Virginie MOUREAUX, Claire DE RIDDER, Chantal COMPERE, Philippe DUBOIS, Philippe |
spellingShingle |
CATARINO, Ana I. GUIBOURT, Virginie MOUREAUX, Claire DE RIDDER, Chantal COMPERE, Philippe DUBOIS, Philippe Antarctic urchin Ctenocidaris speciosa spines: lessons from the deep |
author_facet |
CATARINO, Ana I. GUIBOURT, Virginie MOUREAUX, Claire DE RIDDER, Chantal COMPERE, Philippe DUBOIS, Philippe |
author_sort |
CATARINO, Ana I. |
title |
Antarctic urchin Ctenocidaris speciosa spines: lessons from the deep |
title_short |
Antarctic urchin Ctenocidaris speciosa spines: lessons from the deep |
title_full |
Antarctic urchin Ctenocidaris speciosa spines: lessons from the deep |
title_fullStr |
Antarctic urchin Ctenocidaris speciosa spines: lessons from the deep |
title_full_unstemmed |
Antarctic urchin Ctenocidaris speciosa spines: lessons from the deep |
title_sort |
antarctic urchin ctenocidaris speciosa spines: lessons from the deep |
publisher |
Station Biologique de Roscoff (SBR) |
publishDate |
2013 |
url |
https://dx.doi.org/10.21411/cbm.a.cf35bbbd http://application.sb-roscoff.fr/cbm/doi/10.21411/CBM.A.CF35BBBD |
geographic |
Antarctic Weddell Sea Weddell |
geographic_facet |
Antarctic Weddell Sea Weddell |
genre |
Antarc* Antarctic Antarctica Ocean acidification Weddell Sea |
genre_facet |
Antarc* Antarctic Antarctica Ocean acidification Weddell Sea |
op_relation |
https://dx.doi.org/10.21411/cbm.i.e1a05b5f |
op_doi |
https://doi.org/10.21411/cbm.a.cf35bbbd https://doi.org/10.21411/cbm.i.e1a05b5f |
_version_ |
1766267740543254528 |