Preliminary assessment of sea star (Echinodermata, Asteroidea) diversity in the coastal Magellanic Region (south Chile) and their geographical distribution.
International audience Sea stars are a diverse and important component of the Southern Ocean benthos. However, scarce information is available regarding their diversity, distribution, evolution, and taxonomic uncertainties persist for multiple taxa. The Magellanic Region (south of Chile) remains und...
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2023
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ftunivbourgogne:oai:HAL:hal-04274009v1 2024-06-23T07:47:07+00:00 Preliminary assessment of sea star (Echinodermata, Asteroidea) diversity in the coastal Magellanic Region (south Chile) and their geographical distribution. Vantomme, Luka Jossart, Quentin Gérard, Karin Danis, Bruno Moreau, Camille Laboratoire de Biologie Marine (LBM) Université libre de Bruxelles (ULB) Biogéosciences UMR 6282 (BGS) Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS) Laboratorio de Ecosistemas Marinos Antárcticos y Subantárcticos (LEMAS) Universidad de Magallanes (UMAG) Millennium Institute Biodiversity of Antarctic and Subantarctic Ecosystems (BASE) (BASE) Cape Horn International Center (CHIC) This research was funded by Leopold III Fonds and Fonds de la Recherche ScientifiqueFNRS to C.M. and by ANID—Millennium Science Initiative Program— ICN2021_002 and ANID/BASALFB210018 to K.G. 2023-11 https://u-bourgogne.hal.science/hal-04274009 https://u-bourgogne.hal.science/hal-04274009/document https://u-bourgogne.hal.science/hal-04274009/file/diversity-15-01129-v2.pdf https://doi.org/10.3390/d15111129 en eng HAL CCSD MDPI info:eu-repo/semantics/altIdentifier/doi/10.3390/d15111129 hal-04274009 https://u-bourgogne.hal.science/hal-04274009 https://u-bourgogne.hal.science/hal-04274009/document https://u-bourgogne.hal.science/hal-04274009/file/diversity-15-01129-v2.pdf doi:10.3390/d15111129 info:eu-repo/semantics/OpenAccess ISSN: 1424-2818 Diversity https://u-bourgogne.hal.science/hal-04274009 Diversity, 2023, 15 (11), pp.1129. ⟨10.3390/d15111129⟩ https://www.mdpi.com/1424-2818/15/11/1129 Southern Ocean sub-Antarctic DNA barcoding ntegrative taxonomy starfish [SDE.BE]Environmental Sciences/Biodiversity and Ecology info:eu-repo/semantics/article Journal articles 2023 ftunivbourgogne https://doi.org/10.3390/d15111129 2024-06-03T23:52:57Z International audience Sea stars are a diverse and important component of the Southern Ocean benthos. However, scarce information is available regarding their diversity, distribution, evolution, and taxonomic uncertainties persist for multiple taxa. The Magellanic Region (south of Chile) remains under-sampled despite its pivotal location for species distribution and diversity, being located at the crossroad of three ocean basins. In this study, we assessed the biodiversity of coastal Magellanic sea stars and their affinities with other oceanic bioregions. An integrative approach combining morphological identification with DNA barcoding was implemented to highlight taxonomic discrepancies such as suspected synonymy and unrecognised diversity. Firstly, we identified a total of 15 species from the coastal Magellanic Region and reported the occurrence of Cycethra frigida Koehler, 1917 for the first time in this region. The distribution of these 15 species ranged from only in South America to circumpolar, bipolar, or possibly cosmopolitan. Secondly, we highlighted possible synonymy in two species pairs within the genera Anasterias and Odontaster. This preliminary biodiversity assessment forms an important baseline for monitoring and conservation purposes, especially in the face of distribution shifts as a response to climate change and the increased presence of invasive species. Developmental mode has previously been suggested to be important in shaping biogeographical patterns. However, developmental mode was insufficient to explain the observed patterns, and other factors (e.g., physiological constraints, competition, bathymetrical range, and the possibility of passively rafting on kelp) are suggested to be at least equally important. Finally, an increase in barcoding effort is needed to better capture phylogeographic patterns for each species, both by increasing the number of specimens investigated and by covering a broader geographical range. Article in Journal/Newspaper Antarc* Antarctic Southern Ocean Université de Bourgogne (UB): HAL Antarctic Southern Ocean Diversity 15 11 1129 |
institution |
Open Polar |
collection |
Université de Bourgogne (UB): HAL |
op_collection_id |
ftunivbourgogne |
language |
English |
topic |
Southern Ocean sub-Antarctic DNA barcoding ntegrative taxonomy starfish [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
spellingShingle |
Southern Ocean sub-Antarctic DNA barcoding ntegrative taxonomy starfish [SDE.BE]Environmental Sciences/Biodiversity and Ecology Vantomme, Luka Jossart, Quentin Gérard, Karin Danis, Bruno Moreau, Camille Preliminary assessment of sea star (Echinodermata, Asteroidea) diversity in the coastal Magellanic Region (south Chile) and their geographical distribution. |
topic_facet |
Southern Ocean sub-Antarctic DNA barcoding ntegrative taxonomy starfish [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
description |
International audience Sea stars are a diverse and important component of the Southern Ocean benthos. However, scarce information is available regarding their diversity, distribution, evolution, and taxonomic uncertainties persist for multiple taxa. The Magellanic Region (south of Chile) remains under-sampled despite its pivotal location for species distribution and diversity, being located at the crossroad of three ocean basins. In this study, we assessed the biodiversity of coastal Magellanic sea stars and their affinities with other oceanic bioregions. An integrative approach combining morphological identification with DNA barcoding was implemented to highlight taxonomic discrepancies such as suspected synonymy and unrecognised diversity. Firstly, we identified a total of 15 species from the coastal Magellanic Region and reported the occurrence of Cycethra frigida Koehler, 1917 for the first time in this region. The distribution of these 15 species ranged from only in South America to circumpolar, bipolar, or possibly cosmopolitan. Secondly, we highlighted possible synonymy in two species pairs within the genera Anasterias and Odontaster. This preliminary biodiversity assessment forms an important baseline for monitoring and conservation purposes, especially in the face of distribution shifts as a response to climate change and the increased presence of invasive species. Developmental mode has previously been suggested to be important in shaping biogeographical patterns. However, developmental mode was insufficient to explain the observed patterns, and other factors (e.g., physiological constraints, competition, bathymetrical range, and the possibility of passively rafting on kelp) are suggested to be at least equally important. Finally, an increase in barcoding effort is needed to better capture phylogeographic patterns for each species, both by increasing the number of specimens investigated and by covering a broader geographical range. |
author2 |
Laboratoire de Biologie Marine (LBM) Université libre de Bruxelles (ULB) Biogéosciences UMR 6282 (BGS) Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS) Laboratorio de Ecosistemas Marinos Antárcticos y Subantárcticos (LEMAS) Universidad de Magallanes (UMAG) Millennium Institute Biodiversity of Antarctic and Subantarctic Ecosystems (BASE) (BASE) Cape Horn International Center (CHIC) This research was funded by Leopold III Fonds and Fonds de la Recherche ScientifiqueFNRS to C.M. and by ANID—Millennium Science Initiative Program— ICN2021_002 and ANID/BASALFB210018 to K.G. |
format |
Article in Journal/Newspaper |
author |
Vantomme, Luka Jossart, Quentin Gérard, Karin Danis, Bruno Moreau, Camille |
author_facet |
Vantomme, Luka Jossart, Quentin Gérard, Karin Danis, Bruno Moreau, Camille |
author_sort |
Vantomme, Luka |
title |
Preliminary assessment of sea star (Echinodermata, Asteroidea) diversity in the coastal Magellanic Region (south Chile) and their geographical distribution. |
title_short |
Preliminary assessment of sea star (Echinodermata, Asteroidea) diversity in the coastal Magellanic Region (south Chile) and their geographical distribution. |
title_full |
Preliminary assessment of sea star (Echinodermata, Asteroidea) diversity in the coastal Magellanic Region (south Chile) and their geographical distribution. |
title_fullStr |
Preliminary assessment of sea star (Echinodermata, Asteroidea) diversity in the coastal Magellanic Region (south Chile) and their geographical distribution. |
title_full_unstemmed |
Preliminary assessment of sea star (Echinodermata, Asteroidea) diversity in the coastal Magellanic Region (south Chile) and their geographical distribution. |
title_sort |
preliminary assessment of sea star (echinodermata, asteroidea) diversity in the coastal magellanic region (south chile) and their geographical distribution. |
publisher |
HAL CCSD |
publishDate |
2023 |
url |
https://u-bourgogne.hal.science/hal-04274009 https://u-bourgogne.hal.science/hal-04274009/document https://u-bourgogne.hal.science/hal-04274009/file/diversity-15-01129-v2.pdf https://doi.org/10.3390/d15111129 |
geographic |
Antarctic Southern Ocean |
geographic_facet |
Antarctic Southern Ocean |
genre |
Antarc* Antarctic Southern Ocean |
genre_facet |
Antarc* Antarctic Southern Ocean |
op_source |
ISSN: 1424-2818 Diversity https://u-bourgogne.hal.science/hal-04274009 Diversity, 2023, 15 (11), pp.1129. ⟨10.3390/d15111129⟩ https://www.mdpi.com/1424-2818/15/11/1129 |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.3390/d15111129 hal-04274009 https://u-bourgogne.hal.science/hal-04274009 https://u-bourgogne.hal.science/hal-04274009/document https://u-bourgogne.hal.science/hal-04274009/file/diversity-15-01129-v2.pdf doi:10.3390/d15111129 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.3390/d15111129 |
container_title |
Diversity |
container_volume |
15 |
container_issue |
11 |
container_start_page |
1129 |
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1802651027628883968 |