The phylogenetic position and taxonomic status of Sterechinus bernasconiae Larrain, 1975 (Echinodermata, Echinoidea), an enigmatic Chilean sea urchin
Artículo de publicación ISI Sterechinus is a very common echinoid genus in benthic communities of the Southern Ocean. It is widely distributed across the Antarctic and South Atlantic Oceans and has been the most frequently collected and intensively studied Antarctic echinoid. Despite the abundant li...
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ftunivchile:oai:repositorio.uchile.cl:2250/134823 2023-05-15T13:56:31+02:00 The phylogenetic position and taxonomic status of Sterechinus bernasconiae Larrain, 1975 (Echinodermata, Echinoidea), an enigmatic Chilean sea urchin Saucède, Thomas Díaz, Angie Pierrat, Benjamín Sellanes, Javier David, Bruno Féral, Jean-Pierre Poulin, Elie 2015 application/pdf https://doi.org/10.1007/s00300-015-1689-9 https://repositorio.uchile.cl/handle/2250/134823 en eng Springer Polar Biology (2015) 38: 1223–1237 doi:10.1007/s00300-015-1689-9 https://repositorio.uchile.cl/handle/2250/134823 Atribución-NoComercial-SinDerivadas 3.0 Chile http://creativecommons.org/licenses/by-nc-nd/3.0/cl/ CC-BY-NC-ND Sterechinus bernasconiae Gracilechinus multidentatus Echinoidea Antarctic Phylogeny Biogeography Artículo de revista 2015 ftunivchile https://doi.org/10.1007/s00300-015-1689-9 2023-01-22T01:04:11Z Artículo de publicación ISI Sterechinus is a very common echinoid genus in benthic communities of the Southern Ocean. It is widely distributed across the Antarctic and South Atlantic Oceans and has been the most frequently collected and intensively studied Antarctic echinoid. Despite the abundant literature devoted to Sterechinus, few studies have questioned the systematics of the genus. Sterechinus bernasconiae is the only species of Sterechinus reported from the Pacific Ocean and is only known from the few specimens of the original material. Based on new material collected during the oceanographic cruise INSPIRE on board the R/V Melville, the taxonomy and phylogenetic position of the species are revised. Molecular and morphological analyses show that S. bernasconiae is a subjective junior synonym of Gracilechinus multidentatus (Clark). Results also show the existence of two genetically distinct subclades within the so-called Sterechinus clade: a Sterechinus neumayeri subclade and a subclade composed of other Sterechinus species. The three nominal species Sterechinus antarcticus, Sterechinus diadema, and Sterechinus agassizi cluster together and cannot be distinguished. The species Sterechinus dentifer is weakly differentiated from these three nominal species. The elucidation of phylogenetic relationships between G. multidentatus and species of Sterechinus also allows for clarification of respective biogeographic distributions and emphasizes the putative role played by biotic exclusion in the spatial distribution of species. Article in Journal/Newspaper Antarc* Antarctic antarcticus Polar Biology Southern Ocean Universidad de Chile: Repositorio académico Antarctic Isi ENVELOPE(-38.550,-38.550,65.617,65.617) Pacific Southern Ocean The Antarctic Polar Biology 38 8 1223 1237 |
institution |
Open Polar |
collection |
Universidad de Chile: Repositorio académico |
op_collection_id |
ftunivchile |
language |
English |
topic |
Sterechinus bernasconiae Gracilechinus multidentatus Echinoidea Antarctic Phylogeny Biogeography |
spellingShingle |
Sterechinus bernasconiae Gracilechinus multidentatus Echinoidea Antarctic Phylogeny Biogeography Saucède, Thomas Díaz, Angie Pierrat, Benjamín Sellanes, Javier David, Bruno Féral, Jean-Pierre Poulin, Elie The phylogenetic position and taxonomic status of Sterechinus bernasconiae Larrain, 1975 (Echinodermata, Echinoidea), an enigmatic Chilean sea urchin |
topic_facet |
Sterechinus bernasconiae Gracilechinus multidentatus Echinoidea Antarctic Phylogeny Biogeography |
description |
Artículo de publicación ISI Sterechinus is a very common echinoid genus in benthic communities of the Southern Ocean. It is widely distributed across the Antarctic and South Atlantic Oceans and has been the most frequently collected and intensively studied Antarctic echinoid. Despite the abundant literature devoted to Sterechinus, few studies have questioned the systematics of the genus. Sterechinus bernasconiae is the only species of Sterechinus reported from the Pacific Ocean and is only known from the few specimens of the original material. Based on new material collected during the oceanographic cruise INSPIRE on board the R/V Melville, the taxonomy and phylogenetic position of the species are revised. Molecular and morphological analyses show that S. bernasconiae is a subjective junior synonym of Gracilechinus multidentatus (Clark). Results also show the existence of two genetically distinct subclades within the so-called Sterechinus clade: a Sterechinus neumayeri subclade and a subclade composed of other Sterechinus species. The three nominal species Sterechinus antarcticus, Sterechinus diadema, and Sterechinus agassizi cluster together and cannot be distinguished. The species Sterechinus dentifer is weakly differentiated from these three nominal species. The elucidation of phylogenetic relationships between G. multidentatus and species of Sterechinus also allows for clarification of respective biogeographic distributions and emphasizes the putative role played by biotic exclusion in the spatial distribution of species. |
format |
Article in Journal/Newspaper |
author |
Saucède, Thomas Díaz, Angie Pierrat, Benjamín Sellanes, Javier David, Bruno Féral, Jean-Pierre Poulin, Elie |
author_facet |
Saucède, Thomas Díaz, Angie Pierrat, Benjamín Sellanes, Javier David, Bruno Féral, Jean-Pierre Poulin, Elie |
author_sort |
Saucède, Thomas |
title |
The phylogenetic position and taxonomic status of Sterechinus bernasconiae Larrain, 1975 (Echinodermata, Echinoidea), an enigmatic Chilean sea urchin |
title_short |
The phylogenetic position and taxonomic status of Sterechinus bernasconiae Larrain, 1975 (Echinodermata, Echinoidea), an enigmatic Chilean sea urchin |
title_full |
The phylogenetic position and taxonomic status of Sterechinus bernasconiae Larrain, 1975 (Echinodermata, Echinoidea), an enigmatic Chilean sea urchin |
title_fullStr |
The phylogenetic position and taxonomic status of Sterechinus bernasconiae Larrain, 1975 (Echinodermata, Echinoidea), an enigmatic Chilean sea urchin |
title_full_unstemmed |
The phylogenetic position and taxonomic status of Sterechinus bernasconiae Larrain, 1975 (Echinodermata, Echinoidea), an enigmatic Chilean sea urchin |
title_sort |
phylogenetic position and taxonomic status of sterechinus bernasconiae larrain, 1975 (echinodermata, echinoidea), an enigmatic chilean sea urchin |
publisher |
Springer |
publishDate |
2015 |
url |
https://doi.org/10.1007/s00300-015-1689-9 https://repositorio.uchile.cl/handle/2250/134823 |
long_lat |
ENVELOPE(-38.550,-38.550,65.617,65.617) |
geographic |
Antarctic Isi Pacific Southern Ocean The Antarctic |
geographic_facet |
Antarctic Isi Pacific Southern Ocean The Antarctic |
genre |
Antarc* Antarctic antarcticus Polar Biology Southern Ocean |
genre_facet |
Antarc* Antarctic antarcticus Polar Biology Southern Ocean |
op_relation |
Polar Biology (2015) 38: 1223–1237 doi:10.1007/s00300-015-1689-9 https://repositorio.uchile.cl/handle/2250/134823 |
op_rights |
Atribución-NoComercial-SinDerivadas 3.0 Chile http://creativecommons.org/licenses/by-nc-nd/3.0/cl/ |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.1007/s00300-015-1689-9 |
container_title |
Polar Biology |
container_volume |
38 |
container_issue |
8 |
container_start_page |
1223 |
op_container_end_page |
1237 |
_version_ |
1766264021874376704 |