Deep genetic divergence between austral populations of the red alga Gigartina skottsbergii reveals a cryptic species endemic to the Antarctic continent
International audience The almost complete isolation of Antarctica after the intensification the Antarctic circumpolar current (ACC) during the middle-Miocene has been challenged by recent molecular data showing the existence of allelic exchange across the ACC. For organisms present on both sides of...
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ftsorbonneuniv:oai:HAL:hal-01191026v1 2024-06-23T07:47:08+00:00 Deep genetic divergence between austral populations of the red alga Gigartina skottsbergii reveals a cryptic species endemic to the Antarctic continent Billard, Emmanuelle Reyes, Jeanette Mansilla, Andres Faugeron, Sylvain Guillemin, Marie-Laure Universidade do Porto = University of Porto Instituto de Ciencias ambientales y evolutivas Universidad Austral de Chile Laboratorio de Macroalgas Antárticas y Subantárticas Universidad de Magallanes (UMAG) Evolutionary Biology and Ecology of Algae (EBEA) Station biologique de Roscoff Roscoff (SBR) Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Pontificia Universidad Católica de Chile (UC)-Universidad Austral de Chile-Centre National de la Recherche Scientifique (CNRS) Centro de conservacion marina and CeBiB Pontificia Universidad Católica de Chile (UC) 2015-12 https://hal.sorbonne-universite.fr/hal-01191026 https://hal.sorbonne-universite.fr/hal-01191026/document https://hal.sorbonne-universite.fr/hal-01191026/file/Billard_2015_Deep_genetic.pdf https://doi.org/10.1007/s00300-015-1762-4 en eng HAL CCSD Springer Verlag info:eu-repo/semantics/altIdentifier/doi/10.1007/s00300-015-1762-4 hal-01191026 https://hal.sorbonne-universite.fr/hal-01191026 https://hal.sorbonne-universite.fr/hal-01191026/document https://hal.sorbonne-universite.fr/hal-01191026/file/Billard_2015_Deep_genetic.pdf doi:10.1007/s00300-015-1762-4 info:eu-repo/semantics/OpenAccess ISSN: 0722-4060 EISSN: 1432-2056 Polar Biology https://hal.sorbonne-universite.fr/hal-01191026 Polar Biology, 2015, 38 (12), pp.2021-2034. ⟨10.1007/s00300-015-1762-4⟩ Phylogeography Glacial refugia Seaweed Antarctica rbcL Cox2-3 [SDE.BE]Environmental Sciences/Biodiversity and Ecology info:eu-repo/semantics/article Journal articles 2015 ftsorbonneuniv https://doi.org/10.1007/s00300-015-1762-4 2024-05-30T23:53:02Z International audience The almost complete isolation of Antarctica after the intensification the Antarctic circumpolar current (ACC) during the middle-Miocene has been challenged by recent molecular data showing the existence of allelic exchange across the ACC. For organisms present on both sides of the ACC, two hypotheses have then been discussed to explain the origin of the Antarctic populations: (1) They correspond to recent immigrants from adjacent continents, or (2) they have evolved in situ and have survived the dramatic effects of the last Quaternary glaciations in this region. The red algae Gigartina skottsbergii presents a disjoint distribution and is reported in both Antarctica and southern South America, a distribution pattern that largely exceeds its dispersal capacity. Mitochondrial sequences of the intergenic region Cox2-3 (n = 233) and partial chloroplastic RuBisCo large subunit gene (n = 26) sequences were obtained for individuals from the Chilean sub-Antarctic ecoregion and Antarctic Peninsula localities. The results strongly support the persistence of populations on each side of the Drake Passage during glacial periods and the existence of dispersal barrier due to the ACC. On both sides of the ACC, the last Quaternary glaciations have induced strong bottlenecks that were followed by rapid colonization events. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Drake Passage Polar Biology HAL Sorbonne Université Antarctic The Antarctic Antarctic Peninsula Austral Drake Passage Polar Biology 38 12 2021 2034 |
institution |
Open Polar |
collection |
HAL Sorbonne Université |
op_collection_id |
ftsorbonneuniv |
language |
English |
topic |
Phylogeography Glacial refugia Seaweed Antarctica rbcL Cox2-3 [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
spellingShingle |
Phylogeography Glacial refugia Seaweed Antarctica rbcL Cox2-3 [SDE.BE]Environmental Sciences/Biodiversity and Ecology Billard, Emmanuelle Reyes, Jeanette Mansilla, Andres Faugeron, Sylvain Guillemin, Marie-Laure Deep genetic divergence between austral populations of the red alga Gigartina skottsbergii reveals a cryptic species endemic to the Antarctic continent |
topic_facet |
Phylogeography Glacial refugia Seaweed Antarctica rbcL Cox2-3 [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
description |
International audience The almost complete isolation of Antarctica after the intensification the Antarctic circumpolar current (ACC) during the middle-Miocene has been challenged by recent molecular data showing the existence of allelic exchange across the ACC. For organisms present on both sides of the ACC, two hypotheses have then been discussed to explain the origin of the Antarctic populations: (1) They correspond to recent immigrants from adjacent continents, or (2) they have evolved in situ and have survived the dramatic effects of the last Quaternary glaciations in this region. The red algae Gigartina skottsbergii presents a disjoint distribution and is reported in both Antarctica and southern South America, a distribution pattern that largely exceeds its dispersal capacity. Mitochondrial sequences of the intergenic region Cox2-3 (n = 233) and partial chloroplastic RuBisCo large subunit gene (n = 26) sequences were obtained for individuals from the Chilean sub-Antarctic ecoregion and Antarctic Peninsula localities. The results strongly support the persistence of populations on each side of the Drake Passage during glacial periods and the existence of dispersal barrier due to the ACC. On both sides of the ACC, the last Quaternary glaciations have induced strong bottlenecks that were followed by rapid colonization events. |
author2 |
Universidade do Porto = University of Porto Instituto de Ciencias ambientales y evolutivas Universidad Austral de Chile Laboratorio de Macroalgas Antárticas y Subantárticas Universidad de Magallanes (UMAG) Evolutionary Biology and Ecology of Algae (EBEA) Station biologique de Roscoff Roscoff (SBR) Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Pontificia Universidad Católica de Chile (UC)-Universidad Austral de Chile-Centre National de la Recherche Scientifique (CNRS) Centro de conservacion marina and CeBiB Pontificia Universidad Católica de Chile (UC) |
format |
Article in Journal/Newspaper |
author |
Billard, Emmanuelle Reyes, Jeanette Mansilla, Andres Faugeron, Sylvain Guillemin, Marie-Laure |
author_facet |
Billard, Emmanuelle Reyes, Jeanette Mansilla, Andres Faugeron, Sylvain Guillemin, Marie-Laure |
author_sort |
Billard, Emmanuelle |
title |
Deep genetic divergence between austral populations of the red alga Gigartina skottsbergii reveals a cryptic species endemic to the Antarctic continent |
title_short |
Deep genetic divergence between austral populations of the red alga Gigartina skottsbergii reveals a cryptic species endemic to the Antarctic continent |
title_full |
Deep genetic divergence between austral populations of the red alga Gigartina skottsbergii reveals a cryptic species endemic to the Antarctic continent |
title_fullStr |
Deep genetic divergence between austral populations of the red alga Gigartina skottsbergii reveals a cryptic species endemic to the Antarctic continent |
title_full_unstemmed |
Deep genetic divergence between austral populations of the red alga Gigartina skottsbergii reveals a cryptic species endemic to the Antarctic continent |
title_sort |
deep genetic divergence between austral populations of the red alga gigartina skottsbergii reveals a cryptic species endemic to the antarctic continent |
publisher |
HAL CCSD |
publishDate |
2015 |
url |
https://hal.sorbonne-universite.fr/hal-01191026 https://hal.sorbonne-universite.fr/hal-01191026/document https://hal.sorbonne-universite.fr/hal-01191026/file/Billard_2015_Deep_genetic.pdf https://doi.org/10.1007/s00300-015-1762-4 |
geographic |
Antarctic The Antarctic Antarctic Peninsula Austral Drake Passage |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula Austral Drake Passage |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Drake Passage Polar Biology |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Drake Passage Polar Biology |
op_source |
ISSN: 0722-4060 EISSN: 1432-2056 Polar Biology https://hal.sorbonne-universite.fr/hal-01191026 Polar Biology, 2015, 38 (12), pp.2021-2034. ⟨10.1007/s00300-015-1762-4⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1007/s00300-015-1762-4 hal-01191026 https://hal.sorbonne-universite.fr/hal-01191026 https://hal.sorbonne-universite.fr/hal-01191026/document https://hal.sorbonne-universite.fr/hal-01191026/file/Billard_2015_Deep_genetic.pdf doi:10.1007/s00300-015-1762-4 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1007/s00300-015-1762-4 |
container_title |
Polar Biology |
container_volume |
38 |
container_issue |
12 |
container_start_page |
2021 |
op_container_end_page |
2034 |
_version_ |
1802651170862268416 |