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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Online Access: | https://doi.org/10.1007/s00300-015-1762-4 https://hal.sorbonne-universite.fr/hal-01191026/file/Billard_2015_Deep_genetic.pdf https://hal.sorbonne-universite.fr/hal-01191026 |
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fttriple:oai:gotriple.eu:10670/1.wjum4l 2023-05-15T13:43:23+02:00 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 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) 2015-12-01 https://doi.org/10.1007/s00300-015-1762-4 https://hal.sorbonne-universite.fr/hal-01191026/file/Billard_2015_Deep_genetic.pdf https://hal.sorbonne-universite.fr/hal-01191026 en eng HAL CCSD Springer Verlag hal-01191026 doi:10.1007/s00300-015-1762-4 10670/1.wjum4l https://hal.sorbonne-universite.fr/hal-01191026/file/Billard_2015_Deep_genetic.pdf https://hal.sorbonne-universite.fr/hal-01191026 other Hyper Article en Ligne - Sciences de l'Homme et de la Société ISSN: 0722-4060 EISSN: 1432-2056 Polar Biology Polar Biology, Springer Verlag, 2015, 38 (12), pp.2021-2034. ⟨10.1007/s00300-015-1762-4⟩ rbcL Glacial refugia Seaweed Antarctica Phylogeography Cox2-3 geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2015 fttriple https://doi.org/10.1007/s00300-015-1762-4 2023-01-22T17:55:05Z 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 Unknown Antarctic Antarctic Peninsula Austral Drake Passage The Antarctic Polar Biology 38 12 2021 2034 |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
rbcL Glacial refugia Seaweed Antarctica Phylogeography Cox2-3 geo envir |
spellingShingle |
rbcL Glacial refugia Seaweed Antarctica Phylogeography Cox2-3 geo envir 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 |
rbcL Glacial refugia Seaweed Antarctica Phylogeography Cox2-3 geo envir |
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 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://doi.org/10.1007/s00300-015-1762-4 https://hal.sorbonne-universite.fr/hal-01191026/file/Billard_2015_Deep_genetic.pdf https://hal.sorbonne-universite.fr/hal-01191026 |
geographic |
Antarctic Antarctic Peninsula Austral Drake Passage The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula Austral Drake Passage The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Drake Passage Polar Biology |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Drake Passage Polar Biology |
op_source |
Hyper Article en Ligne - Sciences de l'Homme et de la Société ISSN: 0722-4060 EISSN: 1432-2056 Polar Biology Polar Biology, Springer Verlag, 2015, 38 (12), pp.2021-2034. ⟨10.1007/s00300-015-1762-4⟩ |
op_relation |
hal-01191026 doi:10.1007/s00300-015-1762-4 10670/1.wjum4l https://hal.sorbonne-universite.fr/hal-01191026/file/Billard_2015_Deep_genetic.pdf https://hal.sorbonne-universite.fr/hal-01191026 |
op_rights |
other |
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_ |
1766188495930392576 |