Microstructures of Antarctic cidaroid spines: Diversity of shapes and ectosymbiont attachments
The echinoderm endoskeleton, located in the connective layer of the tegument, is organized into a three-dimensional 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 ectosy...
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ftunivbruxelles:oai:dipot.ulb.ac.be:2013/167396 2023-05-15T13:46:28+02:00 Microstructures of Antarctic cidaroid spines: Diversity of shapes and ectosymbiont attachments David, Bruno Stock, Stuart R. De Carlo, Francesco Heterier, Vincent De Ridder, Chantal 2009-07 No full-text files http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/167396 en eng uri/info:doi/10.1007/s00227-009-1192-3 uri/info:scp/67349192528 http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/167396 Marine Biology, 156 (8 Océanographie biologique Evolution des espèces Ecologie info:eu-repo/semantics/article info:ulb-repo/semantics/articlePeerReview info:ulb-repo/semantics/openurl/article 2009 ftunivbruxelles 2022-06-12T21:03:51Z The echinoderm endoskeleton, located in the connective layer of the tegument, is organized into a three-dimensional 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 filaments on the spines of Rhynchocidaris triplopora. Ectosymbiont attachments were classified 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. © 2009 Springer-Verlag. SCOPUS: ar.j info:eu-repo/semantics/published Article in Journal/Newspaper Antarc* Antarctic Drake Passage Weddell Sea DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB) Antarctic Drake Passage Weddell Weddell Sea |
institution |
Open Polar |
collection |
DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB) |
op_collection_id |
ftunivbruxelles |
language |
English |
topic |
Océanographie biologique Evolution des espèces Ecologie |
spellingShingle |
Océanographie biologique Evolution des espèces Ecologie David, Bruno Stock, Stuart R. De Carlo, Francesco Heterier, Vincent De Ridder, Chantal Microstructures of Antarctic cidaroid spines: Diversity of shapes and ectosymbiont attachments |
topic_facet |
Océanographie biologique Evolution des espèces Ecologie |
description |
The echinoderm endoskeleton, located in the connective layer of the tegument, is organized into a three-dimensional 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 filaments on the spines of Rhynchocidaris triplopora. Ectosymbiont attachments were classified 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. © 2009 Springer-Verlag. SCOPUS: ar.j info:eu-repo/semantics/published |
format |
Article in Journal/Newspaper |
author |
David, Bruno Stock, Stuart R. De Carlo, Francesco Heterier, Vincent De Ridder, Chantal |
author_facet |
David, Bruno Stock, Stuart R. De Carlo, Francesco Heterier, 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 |
publishDate |
2009 |
url |
http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/167396 |
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 |
Marine Biology, 156 (8 |
op_relation |
uri/info:doi/10.1007/s00227-009-1192-3 uri/info:scp/67349192528 http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/167396 |
_version_ |
1766243101878255616 |