Sweepstake reproductive success and collective dispersal produce chaotic genetic patchiness in a broadcast spawner
A long-standing paradox of marine populations is chaotic genetic patchiness (CGP), temporally unstable patterns of genetic differentiation that occur below the geographic scale of effective dispersal. Several mechanisms are hypothesized to explain CGP including natural selection, spatiotemporal fluc...
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American Association for the Advancement of Science
2021
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ftnerc:oai:nora.nerc.ac.uk:530234 2023-05-15T13:41:45+02:00 Sweepstake reproductive success and collective dispersal produce chaotic genetic patchiness in a broadcast spawner Vendrami, David L.J. Peck, Lloyd S. Clark, Melody S. Eldon, Bjarki Meredith, Michael Hoffman, Joseph I. 2021-09-10 text http://nora.nerc.ac.uk/id/eprint/530234/ https://nora.nerc.ac.uk/id/eprint/530234/1/sciadv.abj4713.pdf https://www.science.org/doi/10.1126/sciadv.abj4713 en eng American Association for the Advancement of Science https://nora.nerc.ac.uk/id/eprint/530234/1/sciadv.abj4713.pdf Vendrami, David L.J.; Peck, Lloyd S. orcid:0000-0003-3479-6791 Clark, Melody S. orcid:0000-0002-3442-3824 Eldon, Bjarki; Meredith, Michael orcid:0000-0002-7342-7756 Hoffman, Joseph I. orcid:0000-0001-5895-8949 . 2021 Sweepstake reproductive success and collective dispersal produce chaotic genetic patchiness in a broadcast spawner. Science Advances, 7 (37). 12, pp. https://doi.org/10.1126/sciadv.abj4713 <https://doi.org/10.1126/sciadv.abj4713> cc_by_4 CC-BY Publication - Article PeerReviewed 2021 ftnerc https://doi.org/10.1126/sciadv.abj4713 2023-02-04T19:52:05Z A long-standing paradox of marine populations is chaotic genetic patchiness (CGP), temporally unstable patterns of genetic differentiation that occur below the geographic scale of effective dispersal. Several mechanisms are hypothesized to explain CGP including natural selection, spatiotemporal fluctuations in larval source populations, self-recruitment, and sweepstake reproduction. Discriminating among them is extremely difficult but is fundamental to understanding how marine organisms reproduce and disperse. Here, we report a notable example of CGP in the Antarctic limpet, an unusually tractable system where multiple confounding explanations can be discounted. Using population genomics, temporally replicated sampling, surface drifters, and forward genetic simulations, we show that CGP likely arises from an extreme sweepstake event together with collective larval dispersal, while selection appears to be unimportant. Our results illustrate the importance of neutral demographic forces in natural populations and have important implications for understanding the recruitment dynamics, population connectivity, local adaptation, and resilience of marine populations. Article in Journal/Newspaper Antarc* Antarctic Natural Environment Research Council: NERC Open Research Archive Antarctic The Antarctic Science Advances 7 37 |
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Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
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ftnerc |
language |
English |
description |
A long-standing paradox of marine populations is chaotic genetic patchiness (CGP), temporally unstable patterns of genetic differentiation that occur below the geographic scale of effective dispersal. Several mechanisms are hypothesized to explain CGP including natural selection, spatiotemporal fluctuations in larval source populations, self-recruitment, and sweepstake reproduction. Discriminating among them is extremely difficult but is fundamental to understanding how marine organisms reproduce and disperse. Here, we report a notable example of CGP in the Antarctic limpet, an unusually tractable system where multiple confounding explanations can be discounted. Using population genomics, temporally replicated sampling, surface drifters, and forward genetic simulations, we show that CGP likely arises from an extreme sweepstake event together with collective larval dispersal, while selection appears to be unimportant. Our results illustrate the importance of neutral demographic forces in natural populations and have important implications for understanding the recruitment dynamics, population connectivity, local adaptation, and resilience of marine populations. |
format |
Article in Journal/Newspaper |
author |
Vendrami, David L.J. Peck, Lloyd S. Clark, Melody S. Eldon, Bjarki Meredith, Michael Hoffman, Joseph I. |
spellingShingle |
Vendrami, David L.J. Peck, Lloyd S. Clark, Melody S. Eldon, Bjarki Meredith, Michael Hoffman, Joseph I. Sweepstake reproductive success and collective dispersal produce chaotic genetic patchiness in a broadcast spawner |
author_facet |
Vendrami, David L.J. Peck, Lloyd S. Clark, Melody S. Eldon, Bjarki Meredith, Michael Hoffman, Joseph I. |
author_sort |
Vendrami, David L.J. |
title |
Sweepstake reproductive success and collective dispersal produce chaotic genetic patchiness in a broadcast spawner |
title_short |
Sweepstake reproductive success and collective dispersal produce chaotic genetic patchiness in a broadcast spawner |
title_full |
Sweepstake reproductive success and collective dispersal produce chaotic genetic patchiness in a broadcast spawner |
title_fullStr |
Sweepstake reproductive success and collective dispersal produce chaotic genetic patchiness in a broadcast spawner |
title_full_unstemmed |
Sweepstake reproductive success and collective dispersal produce chaotic genetic patchiness in a broadcast spawner |
title_sort |
sweepstake reproductive success and collective dispersal produce chaotic genetic patchiness in a broadcast spawner |
publisher |
American Association for the Advancement of Science |
publishDate |
2021 |
url |
http://nora.nerc.ac.uk/id/eprint/530234/ https://nora.nerc.ac.uk/id/eprint/530234/1/sciadv.abj4713.pdf https://www.science.org/doi/10.1126/sciadv.abj4713 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
https://nora.nerc.ac.uk/id/eprint/530234/1/sciadv.abj4713.pdf Vendrami, David L.J.; Peck, Lloyd S. orcid:0000-0003-3479-6791 Clark, Melody S. orcid:0000-0002-3442-3824 Eldon, Bjarki; Meredith, Michael orcid:0000-0002-7342-7756 Hoffman, Joseph I. orcid:0000-0001-5895-8949 . 2021 Sweepstake reproductive success and collective dispersal produce chaotic genetic patchiness in a broadcast spawner. Science Advances, 7 (37). 12, pp. https://doi.org/10.1126/sciadv.abj4713 <https://doi.org/10.1126/sciadv.abj4713> |
op_rights |
cc_by_4 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1126/sciadv.abj4713 |
container_title |
Science Advances |
container_volume |
7 |
container_issue |
37 |
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1766157405727490048 |