Ancient DNA Enables Timing of the Pleistocene Origin and Holocene Expansion of Two Adélie Penguin Lineages in Antarctica
The timing of divergent events in history is one of the central goals of contemporary evolutionary biology. Such studies are however dependent on accurate evolutionary rates. Recent developments in ancient DNA analysis enable the estimation of more accurate evolutionary rates and therefore more accu...
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Online Access: | http://hdl.handle.net/11568/91431 https://doi.org/10.1093/molbev/msh012 |
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ftunivpisairis:oai:arpi.unipi.it:11568/91431 2024-02-11T09:56:30+01:00 Ancient DNA Enables Timing of the Pleistocene Origin and Holocene Expansion of Two Adélie Penguin Lineages in Antarctica RITCHIE P. A MILLAR C. D GIBB G. C LAMBERT D. M. BARONI, CARLO RITCHIE P., A MILLAR C., D GIBB G., C Baroni, Carlo Lambert, D. M. 2004 STAMPA http://hdl.handle.net/11568/91431 https://doi.org/10.1093/molbev/msh012 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000220083300006 volume:21 issue:1 firstpage:240 lastpage:248 numberofpages:9 journal:MOLECULAR BIOLOGY AND EVOLUTION http://hdl.handle.net/11568/91431 doi:10.1093/molbev/msh012 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-1542316934 molecular clock phylogeography control region Bayesian inference rate heterogeneity Adélie Penguin Pygoscelis adeliae Relict penguin colonie Ross Sea Antarctica info:eu-repo/semantics/article 2004 ftunivpisairis https://doi.org/10.1093/molbev/msh012 2024-01-17T17:43:26Z The timing of divergent events in history is one of the central goals of contemporary evolutionary biology. Such studies are however dependent on accurate evolutionary rates. Recent developments in ancient DNA analysis enable the estimation of more accurate evolutionary rates and therefore more accurate timing of divergence events. Consequently, this leads to a better understanding of changes in populations through time. We use an evolutionary rate calculated from ancient DNA of Ade´lie penguins (Pygoscelis adeliae) to time divergent events in their history. We report the presence of two distinct and highly variable mitochondrial DNA lineages and track changes in these lineages through space and time. When the ancient DNA and the phylogenetic rates are used to estimate the time of origin of the lineages, two very different estimates resulted. In addition, these same rates provide very different estimates of the time of expansion of these lineages. We suggest that the rate calculated from ancient DNA is more consistent with the glacial history of Antarctica and requires fewer assumptions than does a narrative based on the phylogenetic rate. Finally, we suggest that our study indicates an important new role for ancient DNA studies in the timing of divergent events in history. Article in Journal/Newspaper Antarc* Antarctica Pygoscelis adeliae Ross Sea ARPI - Archivio della Ricerca dell'Università di Pisa Ross Sea Molecular Biology and Evolution 21 2 240 248 |
institution |
Open Polar |
collection |
ARPI - Archivio della Ricerca dell'Università di Pisa |
op_collection_id |
ftunivpisairis |
language |
English |
topic |
molecular clock phylogeography control region Bayesian inference rate heterogeneity Adélie Penguin Pygoscelis adeliae Relict penguin colonie Ross Sea Antarctica |
spellingShingle |
molecular clock phylogeography control region Bayesian inference rate heterogeneity Adélie Penguin Pygoscelis adeliae Relict penguin colonie Ross Sea Antarctica RITCHIE P. A MILLAR C. D GIBB G. C LAMBERT D. M. BARONI, CARLO Ancient DNA Enables Timing of the Pleistocene Origin and Holocene Expansion of Two Adélie Penguin Lineages in Antarctica |
topic_facet |
molecular clock phylogeography control region Bayesian inference rate heterogeneity Adélie Penguin Pygoscelis adeliae Relict penguin colonie Ross Sea Antarctica |
description |
The timing of divergent events in history is one of the central goals of contemporary evolutionary biology. Such studies are however dependent on accurate evolutionary rates. Recent developments in ancient DNA analysis enable the estimation of more accurate evolutionary rates and therefore more accurate timing of divergence events. Consequently, this leads to a better understanding of changes in populations through time. We use an evolutionary rate calculated from ancient DNA of Ade´lie penguins (Pygoscelis adeliae) to time divergent events in their history. We report the presence of two distinct and highly variable mitochondrial DNA lineages and track changes in these lineages through space and time. When the ancient DNA and the phylogenetic rates are used to estimate the time of origin of the lineages, two very different estimates resulted. In addition, these same rates provide very different estimates of the time of expansion of these lineages. We suggest that the rate calculated from ancient DNA is more consistent with the glacial history of Antarctica and requires fewer assumptions than does a narrative based on the phylogenetic rate. Finally, we suggest that our study indicates an important new role for ancient DNA studies in the timing of divergent events in history. |
author2 |
RITCHIE P., A MILLAR C., D GIBB G., C Baroni, Carlo Lambert, D. M. |
format |
Article in Journal/Newspaper |
author |
RITCHIE P. A MILLAR C. D GIBB G. C LAMBERT D. M. BARONI, CARLO |
author_facet |
RITCHIE P. A MILLAR C. D GIBB G. C LAMBERT D. M. BARONI, CARLO |
author_sort |
RITCHIE P. A |
title |
Ancient DNA Enables Timing of the Pleistocene Origin and Holocene Expansion of Two Adélie Penguin Lineages in Antarctica |
title_short |
Ancient DNA Enables Timing of the Pleistocene Origin and Holocene Expansion of Two Adélie Penguin Lineages in Antarctica |
title_full |
Ancient DNA Enables Timing of the Pleistocene Origin and Holocene Expansion of Two Adélie Penguin Lineages in Antarctica |
title_fullStr |
Ancient DNA Enables Timing of the Pleistocene Origin and Holocene Expansion of Two Adélie Penguin Lineages in Antarctica |
title_full_unstemmed |
Ancient DNA Enables Timing of the Pleistocene Origin and Holocene Expansion of Two Adélie Penguin Lineages in Antarctica |
title_sort |
ancient dna enables timing of the pleistocene origin and holocene expansion of two adélie penguin lineages in antarctica |
publishDate |
2004 |
url |
http://hdl.handle.net/11568/91431 https://doi.org/10.1093/molbev/msh012 |
geographic |
Ross Sea |
geographic_facet |
Ross Sea |
genre |
Antarc* Antarctica Pygoscelis adeliae Ross Sea |
genre_facet |
Antarc* Antarctica Pygoscelis adeliae Ross Sea |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000220083300006 volume:21 issue:1 firstpage:240 lastpage:248 numberofpages:9 journal:MOLECULAR BIOLOGY AND EVOLUTION http://hdl.handle.net/11568/91431 doi:10.1093/molbev/msh012 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-1542316934 |
op_doi |
https://doi.org/10.1093/molbev/msh012 |
container_title |
Molecular Biology and Evolution |
container_volume |
21 |
container_issue |
2 |
container_start_page |
240 |
op_container_end_page |
248 |
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1790603641654083584 |