Rare but persistent asexual reproduction explains the success of planktonic foraminifera in polar oceans
Abstract The reproductive strategy of planktonic foraminifera, key pelagic calcifiers, has long remained elusive, hampering efforts to understand and model their population dynamics. This is particularly critical in polar oceans where their success relies on rapid population growth after the polar n...
Published in: | Journal of Plankton Research |
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2022
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Online Access: | http://dx.doi.org/10.1093/plankt/fbac069 https://academic.oup.com/plankt/article-pdf/45/1/15/49081777/fbac069.pdf |
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croxfordunivpr:10.1093/plankt/fbac069 2024-04-07T07:47:19+00:00 Rare but persistent asexual reproduction explains the success of planktonic foraminifera in polar oceans Meilland, Julie Ezat, Mohamed M Westgård, Adele Manno, Clara Morard, Raphaël Siccha, Michael Kucera, Michal Tromsø Research Foundation Cluster of Excellence “The Ocean Floor – Earth’s Uncharted Interface” Deutsche Forschungsgemeinschaft 2022 http://dx.doi.org/10.1093/plankt/fbac069 https://academic.oup.com/plankt/article-pdf/45/1/15/49081777/fbac069.pdf en eng Oxford University Press (OUP) https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model Journal of Plankton Research volume 45, issue 1, page 15-32 ISSN 0142-7873 1464-3774 Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 2022 croxfordunivpr https://doi.org/10.1093/plankt/fbac069 2024-03-08T03:01:37Z Abstract The reproductive strategy of planktonic foraminifera, key pelagic calcifiers, has long remained elusive, hampering efforts to understand and model their population dynamics. This is particularly critical in polar oceans where their success relies on rapid population growth after the polar night. Here, we provide field and laboratory observations constraining the reproductive cycle of the dominant polar species Neogloboquadrina pachyderma in Antarctic and Arctic waters. We observe that asexual reproduction is a rare but persistent element of the reproductive strategy and that it is reflected in a dimorphism in proloculus and in the ratio of shell size versus the number of chambers between sexually and asexually produced individuals. This dimorphism in natural populations reveals that asexual reproduction supplies more than 75% of adult individuals. This indicates a multigenerational reproduction strategy, where the majority of the population releases gametes to facilitate recombination, while a minority persistently reproduces asexually, allowing rapid population growth as a prerequisite for success in the polar oceans. Article in Journal/Newspaper Antarc* Antarctic Arctic Foraminifera* Neogloboquadrina pachyderma Planktonic foraminifera polar night Oxford University Press Arctic Antarctic Journal of Plankton Research |
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Open Polar |
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Oxford University Press |
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croxfordunivpr |
language |
English |
topic |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Meilland, Julie Ezat, Mohamed M Westgård, Adele Manno, Clara Morard, Raphaël Siccha, Michael Kucera, Michal Rare but persistent asexual reproduction explains the success of planktonic foraminifera in polar oceans |
topic_facet |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
Abstract The reproductive strategy of planktonic foraminifera, key pelagic calcifiers, has long remained elusive, hampering efforts to understand and model their population dynamics. This is particularly critical in polar oceans where their success relies on rapid population growth after the polar night. Here, we provide field and laboratory observations constraining the reproductive cycle of the dominant polar species Neogloboquadrina pachyderma in Antarctic and Arctic waters. We observe that asexual reproduction is a rare but persistent element of the reproductive strategy and that it is reflected in a dimorphism in proloculus and in the ratio of shell size versus the number of chambers between sexually and asexually produced individuals. This dimorphism in natural populations reveals that asexual reproduction supplies more than 75% of adult individuals. This indicates a multigenerational reproduction strategy, where the majority of the population releases gametes to facilitate recombination, while a minority persistently reproduces asexually, allowing rapid population growth as a prerequisite for success in the polar oceans. |
author2 |
Tromsø Research Foundation Cluster of Excellence “The Ocean Floor – Earth’s Uncharted Interface” Deutsche Forschungsgemeinschaft |
format |
Article in Journal/Newspaper |
author |
Meilland, Julie Ezat, Mohamed M Westgård, Adele Manno, Clara Morard, Raphaël Siccha, Michael Kucera, Michal |
author_facet |
Meilland, Julie Ezat, Mohamed M Westgård, Adele Manno, Clara Morard, Raphaël Siccha, Michael Kucera, Michal |
author_sort |
Meilland, Julie |
title |
Rare but persistent asexual reproduction explains the success of planktonic foraminifera in polar oceans |
title_short |
Rare but persistent asexual reproduction explains the success of planktonic foraminifera in polar oceans |
title_full |
Rare but persistent asexual reproduction explains the success of planktonic foraminifera in polar oceans |
title_fullStr |
Rare but persistent asexual reproduction explains the success of planktonic foraminifera in polar oceans |
title_full_unstemmed |
Rare but persistent asexual reproduction explains the success of planktonic foraminifera in polar oceans |
title_sort |
rare but persistent asexual reproduction explains the success of planktonic foraminifera in polar oceans |
publisher |
Oxford University Press (OUP) |
publishDate |
2022 |
url |
http://dx.doi.org/10.1093/plankt/fbac069 https://academic.oup.com/plankt/article-pdf/45/1/15/49081777/fbac069.pdf |
geographic |
Arctic Antarctic |
geographic_facet |
Arctic Antarctic |
genre |
Antarc* Antarctic Arctic Foraminifera* Neogloboquadrina pachyderma Planktonic foraminifera polar night |
genre_facet |
Antarc* Antarctic Arctic Foraminifera* Neogloboquadrina pachyderma Planktonic foraminifera polar night |
op_source |
Journal of Plankton Research volume 45, issue 1, page 15-32 ISSN 0142-7873 1464-3774 |
op_rights |
https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model |
op_doi |
https://doi.org/10.1093/plankt/fbac069 |
container_title |
Journal of Plankton Research |
_version_ |
1795673829355290624 |