Rapid increase in southern elephant seal genetic diversity after a founder event.
Genetic diversity provides the raw material for populations to respond to changing environmental conditions. The evolution of diversity within populations is based on the accumulation of mutations and their retention or loss through selection and genetic drift, while migration can also introduce new...
Published in: | Proceedings of the Royal Society B: Biological Sciences |
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Online Access: | http://dro.dur.ac.uk/22549/ http://dro.dur.ac.uk/22549/1/22549.pdf https://doi.org/10.1098/rspb.2013.3078 |
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ftunivdurham:oai:dro.dur.ac.uk.OAI2:22549 2023-05-15T16:05:12+02:00 Rapid increase in southern elephant seal genetic diversity after a founder event. De Bruyn, M. Pinsky, M. Hall, B. Koch, P. Baroni, C. Hoelzel, A.R. 2014-03-22 application/pdf http://dro.dur.ac.uk/22549/ http://dro.dur.ac.uk/22549/1/22549.pdf https://doi.org/10.1098/rspb.2013.3078 unknown Royal Society dro:22549 issn:0962-8452 issn: 1471-2954 doi:10.1098/rspb.2013.3078 http://dro.dur.ac.uk/22549/ https://doi.org/10.1098/rspb.2013.3078 http://dro.dur.ac.uk/22549/1/22549.pdf Proceedings of the Royal Society series B : biological sciences, 2014, Vol.281(1779), pp.20133078 [Peer Reviewed Journal] Article PeerReviewed 2014 ftunivdurham https://doi.org/10.1098/rspb.2013.3078 2020-05-28T22:37:56Z Genetic diversity provides the raw material for populations to respond to changing environmental conditions. The evolution of diversity within populations is based on the accumulation of mutations and their retention or loss through selection and genetic drift, while migration can also introduce new variation. However, the extent to which population growth and sustained large population size can lead to rapid and significant increases in diversity has not been widely investigated. Here, we assess this empirically by applying approximate Bayesian computation to a novel ancient DNA dataset that spans the life of a southern elephant seal (Mirounga leonina) population, from initial founding approximately 7000 years ago to eventual extinction within the past millennium. We find that rapid population growth and sustained large population size can explain substantial increases in population genetic diversity over a period of several hundred generations, subsequently lost when the population went to extinction. Results suggest that the impact of diversity introduced through migration was relatively minor. We thus demonstrate, by examining genetic diversity across the life of a population, that environmental change could generate the raw material for adaptive evolution over a very short evolutionary time scale through rapid establishment of a large, stable population. Article in Journal/Newspaper Elephant Seal Mirounga leonina Southern Elephant Seal Durham University: Durham Research Online Proceedings of the Royal Society B: Biological Sciences 281 1779 20133078 |
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Durham University: Durham Research Online |
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Genetic diversity provides the raw material for populations to respond to changing environmental conditions. The evolution of diversity within populations is based on the accumulation of mutations and their retention or loss through selection and genetic drift, while migration can also introduce new variation. However, the extent to which population growth and sustained large population size can lead to rapid and significant increases in diversity has not been widely investigated. Here, we assess this empirically by applying approximate Bayesian computation to a novel ancient DNA dataset that spans the life of a southern elephant seal (Mirounga leonina) population, from initial founding approximately 7000 years ago to eventual extinction within the past millennium. We find that rapid population growth and sustained large population size can explain substantial increases in population genetic diversity over a period of several hundred generations, subsequently lost when the population went to extinction. Results suggest that the impact of diversity introduced through migration was relatively minor. We thus demonstrate, by examining genetic diversity across the life of a population, that environmental change could generate the raw material for adaptive evolution over a very short evolutionary time scale through rapid establishment of a large, stable population. |
format |
Article in Journal/Newspaper |
author |
De Bruyn, M. Pinsky, M. Hall, B. Koch, P. Baroni, C. Hoelzel, A.R. |
spellingShingle |
De Bruyn, M. Pinsky, M. Hall, B. Koch, P. Baroni, C. Hoelzel, A.R. Rapid increase in southern elephant seal genetic diversity after a founder event. |
author_facet |
De Bruyn, M. Pinsky, M. Hall, B. Koch, P. Baroni, C. Hoelzel, A.R. |
author_sort |
De Bruyn, M. |
title |
Rapid increase in southern elephant seal genetic diversity after a founder event. |
title_short |
Rapid increase in southern elephant seal genetic diversity after a founder event. |
title_full |
Rapid increase in southern elephant seal genetic diversity after a founder event. |
title_fullStr |
Rapid increase in southern elephant seal genetic diversity after a founder event. |
title_full_unstemmed |
Rapid increase in southern elephant seal genetic diversity after a founder event. |
title_sort |
rapid increase in southern elephant seal genetic diversity after a founder event. |
publisher |
Royal Society |
publishDate |
2014 |
url |
http://dro.dur.ac.uk/22549/ http://dro.dur.ac.uk/22549/1/22549.pdf https://doi.org/10.1098/rspb.2013.3078 |
genre |
Elephant Seal Mirounga leonina Southern Elephant Seal |
genre_facet |
Elephant Seal Mirounga leonina Southern Elephant Seal |
op_source |
Proceedings of the Royal Society series B : biological sciences, 2014, Vol.281(1779), pp.20133078 [Peer Reviewed Journal] |
op_relation |
dro:22549 issn:0962-8452 issn: 1471-2954 doi:10.1098/rspb.2013.3078 http://dro.dur.ac.uk/22549/ https://doi.org/10.1098/rspb.2013.3078 http://dro.dur.ac.uk/22549/1/22549.pdf |
op_doi |
https://doi.org/10.1098/rspb.2013.3078 |
container_title |
Proceedings of the Royal Society B: Biological Sciences |
container_volume |
281 |
container_issue |
1779 |
container_start_page |
20133078 |
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1766401090630189056 |