Evolutionary pathways among shallow and deep-sea echinoids of the genus Sterechinus in the Southern Ocean.
7 pages International audience Antarctica is structured by a narrow and deep continental shelf that sustains a remarkable number of benthic species. The origin of these species and their affinities with the deep-sea fauna that borders the continent shelf are not clear. To date, two main hypotheses h...
Published in: | Deep Sea Research Part II: Topical Studies in Oceanography |
---|---|
Main Authors: | , , , , |
Other Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2011
|
Subjects: | |
Online Access: | https://hal.science/hal-00567501 https://hal.science/hal-00567501/document https://hal.science/hal-00567501/file/2011_Diaz_Deep%20Sea%20Res.%20II_pr_Evolutionary%20pathways%20among%20shallow%20and%20deep-sea%20echinoids%20of%20the%20genus%20Sterechinus%20in%20the%20Southern%20Ocean.pdf https://doi.org/10.1016/j.dsr2.2010.10.012 |
id |
ftanrparis:oai:HAL:hal-00567501v1 |
---|---|
record_format |
openpolar |
institution |
Open Polar |
collection |
Portail HAL-ANR (Agence Nationale de la Recherche) |
op_collection_id |
ftanrparis |
language |
English |
topic |
Sea urchins Coastal zone Deep water Phylogeny Biogeography Evolutionary patterns COI [SDV.BID.SPT]Life Sciences [q-bio]/Biodiversity/Systematics Phylogenetics and taxonomy |
spellingShingle |
Sea urchins Coastal zone Deep water Phylogeny Biogeography Evolutionary patterns COI [SDV.BID.SPT]Life Sciences [q-bio]/Biodiversity/Systematics Phylogenetics and taxonomy Díaz, Angie Féral, Jean-Pierre David, Bruno Saucède, Thomas Poulin, Elie Evolutionary pathways among shallow and deep-sea echinoids of the genus Sterechinus in the Southern Ocean. |
topic_facet |
Sea urchins Coastal zone Deep water Phylogeny Biogeography Evolutionary patterns COI [SDV.BID.SPT]Life Sciences [q-bio]/Biodiversity/Systematics Phylogenetics and taxonomy |
description |
7 pages International audience Antarctica is structured by a narrow and deep continental shelf that sustains a remarkable number of benthic species. The origin of these species and their affinities with the deep-sea fauna that borders the continent shelf are not clear. To date, two main hypotheses have been considered to account for the evolutionary connection between the faunas: (1) either shallow taxa moved down to deep waters (submergence) or (2) deep-sea taxa colonized the continental shelf (emergence). The regular sea urchin genus Sterechinus is a good model to explore the evolutionary relationships among these faunas because its five nominal species include Antarctic and Subantarctic distributions and different bathymetric ranges. Phylogenetic relationships and divergence times among Sterechinus species were established using the COI mitochondrial gene by assuming a molecular clock hypothesis. The results showed the existence of two genetically distinct main groups. The first corresponds exclusively to the shallow-water Antarctic species S. neumayeri, while the second includes all the other nominal species, either deep or shallow, Antarctic or Subantarctic. Within the latter group, S. dentifer specimens all formed a monophyletic cluster, slightly divergent from all other specimens, which were mixed in a second cluster that included S. agassizi from the continental shelf of Argentina, S. diadema from the Kerguelen Plateau and S. antarcticus from the deep Antarctic shelf. These results suggest that the deeper-water species S. dentifer and S. antarcticus are more closely related to Subantarctic species than to the shallow Antarctic species S. neumayeri. Thus, for this genus, neither the submergence nor emergence scenario explains the relationships between Antarctic and deep-sea benthos. At least in the Weddell quadrant, the observed genetic pattern suggests an initial separation between Antarctic and Subantarctic shallow species, and a much later colonization of deep water from the Subantarctic region, ... |
author2 |
Instituto de Ecología y Biodiversidad (IEB) Diversité, évolution et écologie fonctionnelle marine (DIMAR) Université de la Méditerranée - Aix-Marseille 2-Centre National de la Recherche Scientifique (CNRS) Biogéosciences UMR 6282 (BGS) Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS) Study supported by the Grants INACH D 05-09, Conicyt Ph.D. Grant no D-21080136, and by the projects P05-002 ICM and PFB 023 (Institute of Ecology and Biodiversity, Universidad de Chile) and INACH 02-02, 13-05 and ECOS C06B02. ANR-07-BLAN-0213,ANTFLOCKS,ANTARCTIC SHELF AS A SPECIES FLOCKS GENERATOR(2007) |
format |
Article in Journal/Newspaper |
author |
Díaz, Angie Féral, Jean-Pierre David, Bruno Saucède, Thomas Poulin, Elie |
author_facet |
Díaz, Angie Féral, Jean-Pierre David, Bruno Saucède, Thomas Poulin, Elie |
author_sort |
Díaz, Angie |
title |
Evolutionary pathways among shallow and deep-sea echinoids of the genus Sterechinus in the Southern Ocean. |
title_short |
Evolutionary pathways among shallow and deep-sea echinoids of the genus Sterechinus in the Southern Ocean. |
title_full |
Evolutionary pathways among shallow and deep-sea echinoids of the genus Sterechinus in the Southern Ocean. |
title_fullStr |
Evolutionary pathways among shallow and deep-sea echinoids of the genus Sterechinus in the Southern Ocean. |
title_full_unstemmed |
Evolutionary pathways among shallow and deep-sea echinoids of the genus Sterechinus in the Southern Ocean. |
title_sort |
evolutionary pathways among shallow and deep-sea echinoids of the genus sterechinus in the southern ocean. |
publisher |
HAL CCSD |
publishDate |
2011 |
url |
https://hal.science/hal-00567501 https://hal.science/hal-00567501/document https://hal.science/hal-00567501/file/2011_Diaz_Deep%20Sea%20Res.%20II_pr_Evolutionary%20pathways%20among%20shallow%20and%20deep-sea%20echinoids%20of%20the%20genus%20Sterechinus%20in%20the%20Southern%20Ocean.pdf https://doi.org/10.1016/j.dsr2.2010.10.012 |
geographic |
Antarctic Argentina Kerguelen Southern Ocean Weddell |
geographic_facet |
Antarctic Argentina Kerguelen Southern Ocean Weddell |
genre |
Antarc* Antarctic Antarctica antarcticus Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica antarcticus Southern Ocean |
op_source |
ISSN: 0967-0645 Deep Sea Research Part II: Topical Studies in Oceanography https://hal.science/hal-00567501 Deep Sea Research Part II: Topical Studies in Oceanography, 2011, 58 (1-2), pp.205-211. ⟨10.1016/j.dsr2.2010.10.012⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.dsr2.2010.10.012 hal-00567501 https://hal.science/hal-00567501 https://hal.science/hal-00567501/document https://hal.science/hal-00567501/file/2011_Diaz_Deep%20Sea%20Res.%20II_pr_Evolutionary%20pathways%20among%20shallow%20and%20deep-sea%20echinoids%20of%20the%20genus%20Sterechinus%20in%20the%20Southern%20Ocean.pdf doi:10.1016/j.dsr2.2010.10.012 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1016/j.dsr2.2010.10.012 |
container_title |
Deep Sea Research Part II: Topical Studies in Oceanography |
container_volume |
58 |
container_issue |
1-2 |
container_start_page |
205 |
op_container_end_page |
211 |
_version_ |
1787430468669407232 |
spelling |
ftanrparis:oai:HAL:hal-00567501v1 2024-01-07T09:40:05+01:00 Evolutionary pathways among shallow and deep-sea echinoids of the genus Sterechinus in the Southern Ocean. Díaz, Angie Féral, Jean-Pierre David, Bruno Saucède, Thomas Poulin, Elie Instituto de Ecología y Biodiversidad (IEB) Diversité, évolution et écologie fonctionnelle marine (DIMAR) Université de la Méditerranée - Aix-Marseille 2-Centre National de la Recherche Scientifique (CNRS) Biogéosciences UMR 6282 (BGS) Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS) Study supported by the Grants INACH D 05-09, Conicyt Ph.D. Grant no D-21080136, and by the projects P05-002 ICM and PFB 023 (Institute of Ecology and Biodiversity, Universidad de Chile) and INACH 02-02, 13-05 and ECOS C06B02. ANR-07-BLAN-0213,ANTFLOCKS,ANTARCTIC SHELF AS A SPECIES FLOCKS GENERATOR(2007) 2011-01 https://hal.science/hal-00567501 https://hal.science/hal-00567501/document https://hal.science/hal-00567501/file/2011_Diaz_Deep%20Sea%20Res.%20II_pr_Evolutionary%20pathways%20among%20shallow%20and%20deep-sea%20echinoids%20of%20the%20genus%20Sterechinus%20in%20the%20Southern%20Ocean.pdf https://doi.org/10.1016/j.dsr2.2010.10.012 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.dsr2.2010.10.012 hal-00567501 https://hal.science/hal-00567501 https://hal.science/hal-00567501/document https://hal.science/hal-00567501/file/2011_Diaz_Deep%20Sea%20Res.%20II_pr_Evolutionary%20pathways%20among%20shallow%20and%20deep-sea%20echinoids%20of%20the%20genus%20Sterechinus%20in%20the%20Southern%20Ocean.pdf doi:10.1016/j.dsr2.2010.10.012 info:eu-repo/semantics/OpenAccess ISSN: 0967-0645 Deep Sea Research Part II: Topical Studies in Oceanography https://hal.science/hal-00567501 Deep Sea Research Part II: Topical Studies in Oceanography, 2011, 58 (1-2), pp.205-211. ⟨10.1016/j.dsr2.2010.10.012⟩ Sea urchins Coastal zone Deep water Phylogeny Biogeography Evolutionary patterns COI [SDV.BID.SPT]Life Sciences [q-bio]/Biodiversity/Systematics Phylogenetics and taxonomy info:eu-repo/semantics/article Journal articles 2011 ftanrparis https://doi.org/10.1016/j.dsr2.2010.10.012 2023-12-09T22:30:33Z 7 pages International audience Antarctica is structured by a narrow and deep continental shelf that sustains a remarkable number of benthic species. The origin of these species and their affinities with the deep-sea fauna that borders the continent shelf are not clear. To date, two main hypotheses have been considered to account for the evolutionary connection between the faunas: (1) either shallow taxa moved down to deep waters (submergence) or (2) deep-sea taxa colonized the continental shelf (emergence). The regular sea urchin genus Sterechinus is a good model to explore the evolutionary relationships among these faunas because its five nominal species include Antarctic and Subantarctic distributions and different bathymetric ranges. Phylogenetic relationships and divergence times among Sterechinus species were established using the COI mitochondrial gene by assuming a molecular clock hypothesis. The results showed the existence of two genetically distinct main groups. The first corresponds exclusively to the shallow-water Antarctic species S. neumayeri, while the second includes all the other nominal species, either deep or shallow, Antarctic or Subantarctic. Within the latter group, S. dentifer specimens all formed a monophyletic cluster, slightly divergent from all other specimens, which were mixed in a second cluster that included S. agassizi from the continental shelf of Argentina, S. diadema from the Kerguelen Plateau and S. antarcticus from the deep Antarctic shelf. These results suggest that the deeper-water species S. dentifer and S. antarcticus are more closely related to Subantarctic species than to the shallow Antarctic species S. neumayeri. Thus, for this genus, neither the submergence nor emergence scenario explains the relationships between Antarctic and deep-sea benthos. At least in the Weddell quadrant, the observed genetic pattern suggests an initial separation between Antarctic and Subantarctic shallow species, and a much later colonization of deep water from the Subantarctic region, ... Article in Journal/Newspaper Antarc* Antarctic Antarctica antarcticus Southern Ocean Portail HAL-ANR (Agence Nationale de la Recherche) Antarctic Argentina Kerguelen Southern Ocean Weddell Deep Sea Research Part II: Topical Studies in Oceanography 58 1-2 205 211 |