Microstructures of Antarctic cidaroid spines: diversity of shapes and ectosymbiont attachments.
International audience The echinoderm endoskeleton, located in the connective layer of the tegument, is organized into a threedimensional mesh, the stereom. Among echinoids, the cidaroids depart from this pattern, and the shaft of the spine lacks an epidermis. Thus, the spines lack antifouling prote...
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Online Access: | https://doi.org/10.1007/s00227-009-1192-3 https://hal.archives-ouvertes.fr/hal-00401660 |
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fttriple:oai:gotriple.eu:10670/1.ejp7xh 2023-05-15T13:44:45+02:00 Microstructures of Antarctic cidaroid spines: diversity of shapes and ectosymbiont attachments. David, Bruno Stock, Stuart R. De Carlo, Francesco Hétérier, Vincent De Ridder, Chantal Biogéosciences UMR 6282 Dijon (BGS) Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS) Department of Molecular Pharmacology and Biological Chemistry Northwestern University Advanced Photon Source ANL (APS) Argonne National Laboratory Lemont (ANL)-University of Chicago-US Department of Energy Laboratoire de Biologie marine Université libre de Bruxelles (ULB) Funding from the BIANZO I and II projects supported by the Belgian Science Policy (PADDII projects), and from a PhD grant from the Belgian Science Policy (Belspo). ANR-07-BLAN-0213,ANTFLOCKS,ANTARCTIC SHELF AS A SPECIES FLOCKS GENERATOR(2007) 2009-01-01 https://doi.org/10.1007/s00227-009-1192-3 https://hal.archives-ouvertes.fr/hal-00401660 en eng HAL CCSD Springer Verlag hal-00401660 doi:10.1007/s00227-009-1192-3 10670/1.ejp7xh https://hal.archives-ouvertes.fr/hal-00401660 undefined Hyper Article en Ligne - Sciences de l'Homme et de la Société ISSN: 0025-3162 EISSN: 1432-1793 Marine Biology Marine Biology, Springer Verlag, 2009, 156 (8), pp.1559-1572. ⟨10.1007/s00227-009-1192-3⟩ geo art Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2009 fttriple https://doi.org/10.1007/s00227-009-1192-3 2023-01-22T18:24:29Z International audience The echinoderm endoskeleton, located in the connective layer of the tegument, is organized into a threedimensional mesh, the stereom. Among echinoids, the cidaroids depart from this pattern, and the shaft of the spine lacks an epidermis. Thus, the spines lack antifouling protection, allowing ectosymbionts such as bryozoans and foraminiferans to attach. This raises a question about the adaptive role of the cortical layer of the stereom. This study examined the micro- and mesostructure of the spines of 11 cidaroid species collected in the Weddell Sea and Drake Passage, and the nature of their ectosymbiont attachments. Scanning electron microscopy was used to characterize the cortex surface and X-ray micro computed tomography (µCT) to describe the symbiont attachments. Spine microstructure features provide a useful taxonomic character for distinguishing among three species in the genus Ctenocidaris, and challenge a previous parasitic interpretation of cortical Wlaments on the spines of Rhynchocidaris triplopora. Ectosymbiont attachments were classiWed as Anchoring, Molding, Cementing, or Corroding. The study suggests that some microstructure features may be protective, keeping the ectosymbionts away from the cortex and loosely attached at intervals along the shaft of the spine, while other micro-structures facilitate attachment over considerable areas of the shaft. 14 pages Article in Journal/Newspaper Antarc* Antarctic Drake Passage Weddell Sea Unknown Antarctic Drake Passage Weddell Weddell Sea Marine Biology 156 8 1559 1572 |
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English |
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geo art |
spellingShingle |
geo art David, Bruno Stock, Stuart R. De Carlo, Francesco Hétérier, Vincent De Ridder, Chantal Microstructures of Antarctic cidaroid spines: diversity of shapes and ectosymbiont attachments. |
topic_facet |
geo art |
description |
International audience The echinoderm endoskeleton, located in the connective layer of the tegument, is organized into a threedimensional mesh, the stereom. Among echinoids, the cidaroids depart from this pattern, and the shaft of the spine lacks an epidermis. Thus, the spines lack antifouling protection, allowing ectosymbionts such as bryozoans and foraminiferans to attach. This raises a question about the adaptive role of the cortical layer of the stereom. This study examined the micro- and mesostructure of the spines of 11 cidaroid species collected in the Weddell Sea and Drake Passage, and the nature of their ectosymbiont attachments. Scanning electron microscopy was used to characterize the cortex surface and X-ray micro computed tomography (µCT) to describe the symbiont attachments. Spine microstructure features provide a useful taxonomic character for distinguishing among three species in the genus Ctenocidaris, and challenge a previous parasitic interpretation of cortical Wlaments on the spines of Rhynchocidaris triplopora. Ectosymbiont attachments were classiWed as Anchoring, Molding, Cementing, or Corroding. The study suggests that some microstructure features may be protective, keeping the ectosymbionts away from the cortex and loosely attached at intervals along the shaft of the spine, while other micro-structures facilitate attachment over considerable areas of the shaft. 14 pages |
author2 |
Biogéosciences UMR 6282 Dijon (BGS) Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS) Department of Molecular Pharmacology and Biological Chemistry Northwestern University Advanced Photon Source ANL (APS) Argonne National Laboratory Lemont (ANL)-University of Chicago-US Department of Energy Laboratoire de Biologie marine Université libre de Bruxelles (ULB) Funding from the BIANZO I and II projects supported by the Belgian Science Policy (PADDII projects), and from a PhD grant from the Belgian Science Policy (Belspo). ANR-07-BLAN-0213,ANTFLOCKS,ANTARCTIC SHELF AS A SPECIES FLOCKS GENERATOR(2007) |
format |
Article in Journal/Newspaper |
author |
David, Bruno Stock, Stuart R. De Carlo, Francesco Hétérier, Vincent De Ridder, Chantal |
author_facet |
David, Bruno Stock, Stuart R. De Carlo, Francesco Hétérier, Vincent De Ridder, Chantal |
author_sort |
David, Bruno |
title |
Microstructures of Antarctic cidaroid spines: diversity of shapes and ectosymbiont attachments. |
title_short |
Microstructures of Antarctic cidaroid spines: diversity of shapes and ectosymbiont attachments. |
title_full |
Microstructures of Antarctic cidaroid spines: diversity of shapes and ectosymbiont attachments. |
title_fullStr |
Microstructures of Antarctic cidaroid spines: diversity of shapes and ectosymbiont attachments. |
title_full_unstemmed |
Microstructures of Antarctic cidaroid spines: diversity of shapes and ectosymbiont attachments. |
title_sort |
microstructures of antarctic cidaroid spines: diversity of shapes and ectosymbiont attachments. |
publisher |
HAL CCSD |
publishDate |
2009 |
url |
https://doi.org/10.1007/s00227-009-1192-3 https://hal.archives-ouvertes.fr/hal-00401660 |
geographic |
Antarctic Drake Passage Weddell Weddell Sea |
geographic_facet |
Antarctic Drake Passage Weddell Weddell Sea |
genre |
Antarc* Antarctic Drake Passage Weddell Sea |
genre_facet |
Antarc* Antarctic Drake Passage Weddell Sea |
op_source |
Hyper Article en Ligne - Sciences de l'Homme et de la Société ISSN: 0025-3162 EISSN: 1432-1793 Marine Biology Marine Biology, Springer Verlag, 2009, 156 (8), pp.1559-1572. ⟨10.1007/s00227-009-1192-3⟩ |
op_relation |
hal-00401660 doi:10.1007/s00227-009-1192-3 10670/1.ejp7xh https://hal.archives-ouvertes.fr/hal-00401660 |
op_rights |
undefined |
op_doi |
https://doi.org/10.1007/s00227-009-1192-3 |
container_title |
Marine Biology |
container_volume |
156 |
container_issue |
8 |
container_start_page |
1559 |
op_container_end_page |
1572 |
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1766205734377226240 |