Coiling directions in the planktonic foraminifer Pulleniatina: A complex eco-evolutionary dynamic spanning millions of years.
Planktonic foraminifera are heterotrophic sexually reproducing marine protists with an exceptionally complete fossil record that provides unique insights into long-term patterns and processes of evolution. Populations often exhibit strong biases towards either right (dextral) or left (sinistral) she...
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ftdoajarticles:oai:doaj.org/article:081cfbe320204187aa64d19ee6266911 2023-05-15T18:00:57+02:00 Coiling directions in the planktonic foraminifer Pulleniatina: A complex eco-evolutionary dynamic spanning millions of years. Paul N Pearson Luke Penny 2021-01-01T00:00:00Z https://doi.org/10.1371/journal.pone.0249113 https://doaj.org/article/081cfbe320204187aa64d19ee6266911 EN eng Public Library of Science (PLoS) https://doi.org/10.1371/journal.pone.0249113 https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0249113 https://doaj.org/article/081cfbe320204187aa64d19ee6266911 PLoS ONE, Vol 16, Iss 4, p e0249113 (2021) Medicine R Science Q article 2021 ftdoajarticles https://doi.org/10.1371/journal.pone.0249113 2022-12-31T11:13:11Z Planktonic foraminifera are heterotrophic sexually reproducing marine protists with an exceptionally complete fossil record that provides unique insights into long-term patterns and processes of evolution. Populations often exhibit strong biases towards either right (dextral) or left (sinistral) shells. Deep-sea sediment cores spanning millions of years reveal that some species show large and often rapid fluctuations in their dominant coiling direction through time. This is useful for biostratigraphic correlation but further work is required to understand the population dynamical processes that drive these fluctuations. Here we address the case of coiling fluctuations in the planktonic foraminifer genus Pulleniatina based on new high-resolution counts from two recently recovered sediment cores from either side of the Indonesian through-flow in the tropical west Pacific and Indian Oceans (International Ocean Discovery Program Sites U1486 and U1483). We use single-specimen stable isotope analyses to show that dextral and sinistral shells from the same sediment samples can show significant differences in both carbon and oxygen isotopes, implying a degree of ecological separation between populations. In one case we detect a significant difference in size between dextral and sinistral specimens. We suggest that major fluctuations in coiling ratio are caused by cryptic populations replacing one another in competitive sweeps, a mode of evolution that is more often associated with asexual organisms than with the classical 'biological species concept'. Article in Journal/Newspaper Planktonic foraminifera Directory of Open Access Journals: DOAJ Articles Pacific Indian PLOS ONE 16 4 e0249113 |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
language |
English |
topic |
Medicine R Science Q |
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Medicine R Science Q Paul N Pearson Luke Penny Coiling directions in the planktonic foraminifer Pulleniatina: A complex eco-evolutionary dynamic spanning millions of years. |
topic_facet |
Medicine R Science Q |
description |
Planktonic foraminifera are heterotrophic sexually reproducing marine protists with an exceptionally complete fossil record that provides unique insights into long-term patterns and processes of evolution. Populations often exhibit strong biases towards either right (dextral) or left (sinistral) shells. Deep-sea sediment cores spanning millions of years reveal that some species show large and often rapid fluctuations in their dominant coiling direction through time. This is useful for biostratigraphic correlation but further work is required to understand the population dynamical processes that drive these fluctuations. Here we address the case of coiling fluctuations in the planktonic foraminifer genus Pulleniatina based on new high-resolution counts from two recently recovered sediment cores from either side of the Indonesian through-flow in the tropical west Pacific and Indian Oceans (International Ocean Discovery Program Sites U1486 and U1483). We use single-specimen stable isotope analyses to show that dextral and sinistral shells from the same sediment samples can show significant differences in both carbon and oxygen isotopes, implying a degree of ecological separation between populations. In one case we detect a significant difference in size between dextral and sinistral specimens. We suggest that major fluctuations in coiling ratio are caused by cryptic populations replacing one another in competitive sweeps, a mode of evolution that is more often associated with asexual organisms than with the classical 'biological species concept'. |
format |
Article in Journal/Newspaper |
author |
Paul N Pearson Luke Penny |
author_facet |
Paul N Pearson Luke Penny |
author_sort |
Paul N Pearson |
title |
Coiling directions in the planktonic foraminifer Pulleniatina: A complex eco-evolutionary dynamic spanning millions of years. |
title_short |
Coiling directions in the planktonic foraminifer Pulleniatina: A complex eco-evolutionary dynamic spanning millions of years. |
title_full |
Coiling directions in the planktonic foraminifer Pulleniatina: A complex eco-evolutionary dynamic spanning millions of years. |
title_fullStr |
Coiling directions in the planktonic foraminifer Pulleniatina: A complex eco-evolutionary dynamic spanning millions of years. |
title_full_unstemmed |
Coiling directions in the planktonic foraminifer Pulleniatina: A complex eco-evolutionary dynamic spanning millions of years. |
title_sort |
coiling directions in the planktonic foraminifer pulleniatina: a complex eco-evolutionary dynamic spanning millions of years. |
publisher |
Public Library of Science (PLoS) |
publishDate |
2021 |
url |
https://doi.org/10.1371/journal.pone.0249113 https://doaj.org/article/081cfbe320204187aa64d19ee6266911 |
geographic |
Pacific Indian |
geographic_facet |
Pacific Indian |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_source |
PLoS ONE, Vol 16, Iss 4, p e0249113 (2021) |
op_relation |
https://doi.org/10.1371/journal.pone.0249113 https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0249113 https://doaj.org/article/081cfbe320204187aa64d19ee6266911 |
op_doi |
https://doi.org/10.1371/journal.pone.0249113 |
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PLOS ONE |
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16 |
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4 |
container_start_page |
e0249113 |
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1766170233233473536 |