Genetic signature of Last Glacial Maximum regional refugia in a circum-Antarctic sea spider
Altres ajuts: This study was funded by the Australian Department of the Environment and Energy through the Australian Antarctic Division, Australian Antarctic Science grant no. AA3010 to C.P.A. The Census of Antarctic Marine Life (CAML) provided financial support for networking and access to collect...
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ftuabarcelonapb:oai:ddd.uab.cat:186376 2023-05-15T14:03:00+02:00 Genetic signature of Last Glacial Maximum regional refugia in a circum-Antarctic sea spider Soler Membrives, Anna Linse, Katrin Miller, Karen J. Arango, Claudia P. 2017 application/pdf https://ddd.uab.cat/record/186376 eng eng Royal Society Open Science Vol. 4 (october 2017) https://ddd.uab.cat/record/186376 urn:10.1098/rsos.170615 urn:oai:ddd.uab.cat:186376 urn:pmid:29134072 urn:pmcid:PMC5666255 urn:pmc-uid:5666255 urn:scopus_id:85032009678 urn:wos_id:000413965600017 urn:altmetric_id:27617083 urn:oai:egreta.uab.cat:publications/b7f895c4-c7d9-4729-8230-d6f94ad7ca26 urn:oai:pubmedcentral.nih.gov:5666255 open access Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original. https://creativecommons.org/licenses/by/4.0/ CC-BY Nymphon australe Phylogeography Southern Ocean DNA barcoding Population structure Article 2017 ftuabarcelonapb 2023-02-06T21:13:24Z Altres ajuts: This study was funded by the Australian Department of the Environment and Energy through the Australian Antarctic Division, Australian Antarctic Science grant no. AA3010 to C.P.A. The Census of Antarctic Marine Life (CAML) provided financial support for networking and access to collections (CAML coordination grant no. 34 to C.P.A). The evolutionary history of Antarctic organisms is becoming increasingly important to understand and manage population trajectories under rapid environmental change. The Antarctic sea spider Nymphon australe, with an apparently large population size compared with other sea spider species, is an ideal target to look for molecular signatures of past climatic events. We analysed mitochondrial DNA of specimens collected from the Antarctic continent and two Antarctic islands (AI) to infer past population processes and understand current genetic structure. Demographic history analyses suggest populations survived in refugia during the Last Glacial Maximum. The high genetic diversity found in the Antarctic Peninsula and East Antarctic (EA) seems related to multiple demographic contraction-expansion events associated with deep-sea refugia, while the low genetic diversity in the Weddell Sea points to a more recent expansion from a shelf refugium. We suggest the genetic structure of N. australe from AI reflects recent colonization from the continent. At a local level, EA populations reveal generally low genetic differentiation, geographically and bathymetrically, suggesting limited restrictions to dispersal. Results highlight regional differences in demographic histories and how these relate to the variation in intensity of glaciation-deglaciation events around Antarctica, critical for the study of local evolutionary processes. These are valuable data for understanding the remarkable success of Antarctic pycnogonids, and how environmental changes have shaped the evolution and diversification of Southern Ocean benthic biodiversity. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Australian Antarctic Division Southern Ocean Weddell Sea Universitat Autònoma de Barcelona: Dipòsit Digital de Documents de la UAB Antarctic Antarctic Peninsula Southern Ocean The Antarctic Weddell Weddell Sea Royal Society Open Science 4 10 170615 |
institution |
Open Polar |
collection |
Universitat Autònoma de Barcelona: Dipòsit Digital de Documents de la UAB |
op_collection_id |
ftuabarcelonapb |
language |
English |
topic |
Nymphon australe Phylogeography Southern Ocean DNA barcoding Population structure |
spellingShingle |
Nymphon australe Phylogeography Southern Ocean DNA barcoding Population structure Soler Membrives, Anna Linse, Katrin Miller, Karen J. Arango, Claudia P. Genetic signature of Last Glacial Maximum regional refugia in a circum-Antarctic sea spider |
topic_facet |
Nymphon australe Phylogeography Southern Ocean DNA barcoding Population structure |
description |
Altres ajuts: This study was funded by the Australian Department of the Environment and Energy through the Australian Antarctic Division, Australian Antarctic Science grant no. AA3010 to C.P.A. The Census of Antarctic Marine Life (CAML) provided financial support for networking and access to collections (CAML coordination grant no. 34 to C.P.A). The evolutionary history of Antarctic organisms is becoming increasingly important to understand and manage population trajectories under rapid environmental change. The Antarctic sea spider Nymphon australe, with an apparently large population size compared with other sea spider species, is an ideal target to look for molecular signatures of past climatic events. We analysed mitochondrial DNA of specimens collected from the Antarctic continent and two Antarctic islands (AI) to infer past population processes and understand current genetic structure. Demographic history analyses suggest populations survived in refugia during the Last Glacial Maximum. The high genetic diversity found in the Antarctic Peninsula and East Antarctic (EA) seems related to multiple demographic contraction-expansion events associated with deep-sea refugia, while the low genetic diversity in the Weddell Sea points to a more recent expansion from a shelf refugium. We suggest the genetic structure of N. australe from AI reflects recent colonization from the continent. At a local level, EA populations reveal generally low genetic differentiation, geographically and bathymetrically, suggesting limited restrictions to dispersal. Results highlight regional differences in demographic histories and how these relate to the variation in intensity of glaciation-deglaciation events around Antarctica, critical for the study of local evolutionary processes. These are valuable data for understanding the remarkable success of Antarctic pycnogonids, and how environmental changes have shaped the evolution and diversification of Southern Ocean benthic biodiversity. |
format |
Article in Journal/Newspaper |
author |
Soler Membrives, Anna Linse, Katrin Miller, Karen J. Arango, Claudia P. |
author_facet |
Soler Membrives, Anna Linse, Katrin Miller, Karen J. Arango, Claudia P. |
author_sort |
Soler Membrives, Anna |
title |
Genetic signature of Last Glacial Maximum regional refugia in a circum-Antarctic sea spider |
title_short |
Genetic signature of Last Glacial Maximum regional refugia in a circum-Antarctic sea spider |
title_full |
Genetic signature of Last Glacial Maximum regional refugia in a circum-Antarctic sea spider |
title_fullStr |
Genetic signature of Last Glacial Maximum regional refugia in a circum-Antarctic sea spider |
title_full_unstemmed |
Genetic signature of Last Glacial Maximum regional refugia in a circum-Antarctic sea spider |
title_sort |
genetic signature of last glacial maximum regional refugia in a circum-antarctic sea spider |
publishDate |
2017 |
url |
https://ddd.uab.cat/record/186376 |
geographic |
Antarctic Antarctic Peninsula Southern Ocean The Antarctic Weddell Weddell Sea |
geographic_facet |
Antarctic Antarctic Peninsula Southern Ocean The Antarctic Weddell Weddell Sea |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Australian Antarctic Division Southern Ocean Weddell Sea |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Australian Antarctic Division Southern Ocean Weddell Sea |
op_relation |
Royal Society Open Science Vol. 4 (october 2017) https://ddd.uab.cat/record/186376 urn:10.1098/rsos.170615 urn:oai:ddd.uab.cat:186376 urn:pmid:29134072 urn:pmcid:PMC5666255 urn:pmc-uid:5666255 urn:scopus_id:85032009678 urn:wos_id:000413965600017 urn:altmetric_id:27617083 urn:oai:egreta.uab.cat:publications/b7f895c4-c7d9-4729-8230-d6f94ad7ca26 urn:oai:pubmedcentral.nih.gov:5666255 |
op_rights |
open access Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original. https://creativecommons.org/licenses/by/4.0/ |
op_rightsnorm |
CC-BY |
container_title |
Royal Society Open Science |
container_volume |
4 |
container_issue |
10 |
container_start_page |
170615 |
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1766273446852952064 |