Fine-scale spatial genetic structure in the brooding sea urchin Abatus cordatus suggests vulnerability of the Southern Ocean marine invertebrates facing global change
International audience The Southern Ocean benthic communities are characterized by their levels of endemism and their diversity of invertebrate brooding species. Overall, biological processes acting within these species remain poorly understood despite their importance to understand impacts of ongoi...
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ftunivavignon:oai:HAL:hal-00824476v1 2024-02-11T09:58:08+01:00 Fine-scale spatial genetic structure in the brooding sea urchin Abatus cordatus suggests vulnerability of the Southern Ocean marine invertebrates facing global change Feral, Jean-Pierre Institut méditerranéen de biodiversité et d'écologie marine et continentale (IMBE) Avignon Université (AU)-Aix Marseille Université (AMU)-Institut de recherche pour le développement IRD : UMR237-Centre National de la Recherche Scientifique (CNRS) 2012-05-21 https://hal.science/hal-00824476 https://doi.org/10.1007/s00300-011-1106-y en eng HAL CCSD Springer Verlag info:eu-repo/semantics/altIdentifier/doi/10.1007/s00300-011-1106-y hal-00824476 https://hal.science/hal-00824476 doi:10.1007/s00300-011-1106-y ISSN: 0722-4060 EISSN: 1432-2056 Polar Biology https://hal.science/hal-00824476 Polar Biology, 2012, 35 (4), pp.611-623. ⟨10.1007/s00300-011-1106-y⟩ [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDV.EE.ECO]Life Sciences [q-bio]/Ecology environment/Ecosystems info:eu-repo/semantics/article Journal articles 2012 ftunivavignon https://doi.org/10.1007/s00300-011-1106-y 2024-01-23T23:40:42Z International audience The Southern Ocean benthic communities are characterized by their levels of endemism and their diversity of invertebrate brooding species. Overall, biological processes acting within these species remain poorly understood despite their importance to understand impacts of ongoing global change. We take part in filling this gap by studying the genetic structure over different spatial scales (from centimeters to tens of kilometers) in Abatus cordatus, an endemic and brooding sea urchin from the Kerguelen Islands. We developed three microsatellites and two exon-primed intron crossing markers and conducted a two-scale sampling scheme (from individuals to patches) within two dense localities of Abatus cordatus. Between patches, all pairwise comparisons, covering distances from few meters (between patches within locality) to 25 km (between localities), revealed significant genetic differentiation, a higher proportion of the molecular variance being explained by the comparisons between localities than within localities, in agreement with an isolation by distance model. Within patches, we found no significant correlation between individual pairwise spatial and genetic distances, except for the most polymorphic locus in the patch where the largest range of geographical distances had been analyzed. This study provides an estimation of the dispersal capacities of Abatus cordatus and highlights its low recolonization ability. Similar low recolonization capacities are thus expected in other Antarctic and Subantarctic brooding invertebrate species and suggest a high vulnerability of these species facing global change. Article in Journal/Newspaper Antarc* Antarctic Kerguelen Islands Polar Biology Southern Ocean Université d'Avignon et des Pays de Vaucluse: HAL Antarctic Kerguelen Kerguelen Islands Southern Ocean Polar Biology 35 4 611 623 |
institution |
Open Polar |
collection |
Université d'Avignon et des Pays de Vaucluse: HAL |
op_collection_id |
ftunivavignon |
language |
English |
topic |
[SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDV.EE.ECO]Life Sciences [q-bio]/Ecology environment/Ecosystems |
spellingShingle |
[SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDV.EE.ECO]Life Sciences [q-bio]/Ecology environment/Ecosystems Feral, Jean-Pierre Fine-scale spatial genetic structure in the brooding sea urchin Abatus cordatus suggests vulnerability of the Southern Ocean marine invertebrates facing global change |
topic_facet |
[SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDV.EE.ECO]Life Sciences [q-bio]/Ecology environment/Ecosystems |
description |
International audience The Southern Ocean benthic communities are characterized by their levels of endemism and their diversity of invertebrate brooding species. Overall, biological processes acting within these species remain poorly understood despite their importance to understand impacts of ongoing global change. We take part in filling this gap by studying the genetic structure over different spatial scales (from centimeters to tens of kilometers) in Abatus cordatus, an endemic and brooding sea urchin from the Kerguelen Islands. We developed three microsatellites and two exon-primed intron crossing markers and conducted a two-scale sampling scheme (from individuals to patches) within two dense localities of Abatus cordatus. Between patches, all pairwise comparisons, covering distances from few meters (between patches within locality) to 25 km (between localities), revealed significant genetic differentiation, a higher proportion of the molecular variance being explained by the comparisons between localities than within localities, in agreement with an isolation by distance model. Within patches, we found no significant correlation between individual pairwise spatial and genetic distances, except for the most polymorphic locus in the patch where the largest range of geographical distances had been analyzed. This study provides an estimation of the dispersal capacities of Abatus cordatus and highlights its low recolonization ability. Similar low recolonization capacities are thus expected in other Antarctic and Subantarctic brooding invertebrate species and suggest a high vulnerability of these species facing global change. |
author2 |
Institut méditerranéen de biodiversité et d'écologie marine et continentale (IMBE) Avignon Université (AU)-Aix Marseille Université (AMU)-Institut de recherche pour le développement IRD : UMR237-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Feral, Jean-Pierre |
author_facet |
Feral, Jean-Pierre |
author_sort |
Feral, Jean-Pierre |
title |
Fine-scale spatial genetic structure in the brooding sea urchin Abatus cordatus suggests vulnerability of the Southern Ocean marine invertebrates facing global change |
title_short |
Fine-scale spatial genetic structure in the brooding sea urchin Abatus cordatus suggests vulnerability of the Southern Ocean marine invertebrates facing global change |
title_full |
Fine-scale spatial genetic structure in the brooding sea urchin Abatus cordatus suggests vulnerability of the Southern Ocean marine invertebrates facing global change |
title_fullStr |
Fine-scale spatial genetic structure in the brooding sea urchin Abatus cordatus suggests vulnerability of the Southern Ocean marine invertebrates facing global change |
title_full_unstemmed |
Fine-scale spatial genetic structure in the brooding sea urchin Abatus cordatus suggests vulnerability of the Southern Ocean marine invertebrates facing global change |
title_sort |
fine-scale spatial genetic structure in the brooding sea urchin abatus cordatus suggests vulnerability of the southern ocean marine invertebrates facing global change |
publisher |
HAL CCSD |
publishDate |
2012 |
url |
https://hal.science/hal-00824476 https://doi.org/10.1007/s00300-011-1106-y |
geographic |
Antarctic Kerguelen Kerguelen Islands Southern Ocean |
geographic_facet |
Antarctic Kerguelen Kerguelen Islands Southern Ocean |
genre |
Antarc* Antarctic Kerguelen Islands Polar Biology Southern Ocean |
genre_facet |
Antarc* Antarctic Kerguelen Islands Polar Biology Southern Ocean |
op_source |
ISSN: 0722-4060 EISSN: 1432-2056 Polar Biology https://hal.science/hal-00824476 Polar Biology, 2012, 35 (4), pp.611-623. ⟨10.1007/s00300-011-1106-y⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1007/s00300-011-1106-y hal-00824476 https://hal.science/hal-00824476 doi:10.1007/s00300-011-1106-y |
op_doi |
https://doi.org/10.1007/s00300-011-1106-y |
container_title |
Polar Biology |
container_volume |
35 |
container_issue |
4 |
container_start_page |
611 |
op_container_end_page |
623 |
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1790593724720349184 |