Adaptive divergence across Southern Ocean gradients in the pelagic diatomFragilariopsis kerguelensis
The Southern Ocean is characterized by longitudinal water circulations crossed by strong latitudinal gradients. How this oceanographic background shapes planktonic populations is largely unknown, despite the significance of this region for global biogeochemical cycles. Here, we show, based on genomi...
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ftubkoeln:oai:USBKOELN.ub.uni-koeln.de:32561 2023-05-15T18:24:47+02:00 Adaptive divergence across Southern Ocean gradients in the pelagic diatomFragilariopsis kerguelensis Postel, Ute Glemser, Barbara Salazar Alekseyeva, Katherine Eggers, Sarah Lena Groth, Marco Gloeckner, Gernot John, Uwe Mock, Thomas Klemm, Kerstin Valentin, Klaus Beszteri, Bank 2020 https://kups.ub.uni-koeln.de/32561/ eng eng WILEY Postel, Ute, Glemser, Barbara, Salazar Alekseyeva, Katherine orcid:0000-0002-0088-4489 , Eggers, Sarah Lena orcid:0000-0001-6094-3201 , Groth, Marco orcid:0000-0002-9199-8990 , Gloeckner, Gernot, John, Uwe orcid:0000-0002-1297-4086 , Mock, Thomas orcid:0000-0001-9604-0362 , Klemm, Kerstin, Valentin, Klaus orcid:0000-0001-7401-9423 and Beszteri, Bank (2020). Adaptive divergence across Southern Ocean gradients in the pelagic diatomFragilariopsis kerguelensis. Mol. Ecol., 29 (24). S. 4913 - 4925. HOBOKEN: WILEY. ISSN 1365-294X ddc:no doc-type:article publishedVersion 2020 ftubkoeln 2022-11-09T07:23:35Z The Southern Ocean is characterized by longitudinal water circulations crossed by strong latitudinal gradients. How this oceanographic background shapes planktonic populations is largely unknown, despite the significance of this region for global biogeochemical cycles. Here, we show, based on genomic, morphometric, ecophysiological and mating compatibility data, an example of ecotypic differentiation and speciation within an endemic pelagic inhabitant, the diatomFragilariopsis kerguelensis. We discovered three genotypic variants, one present throughout the latitudinal transect sampled, the others restricted to the north and south, respectively. The latter two showed reciprocal monophyly across all three genomes and significant ecophysiological differences consistent with local adaptation, but produced viable offspring in laboratory crosses. The third group was also reproductively isolated from the latter two. We hypothesize that this pattern originated by an adaptive expansion accompanied by ecotypic divergence, followed by sympatric speciation. Article in Journal/Newspaper Southern Ocean Cologne University: KUPS Southern Ocean |
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Cologne University: KUPS |
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language |
English |
topic |
ddc:no |
spellingShingle |
ddc:no Postel, Ute Glemser, Barbara Salazar Alekseyeva, Katherine Eggers, Sarah Lena Groth, Marco Gloeckner, Gernot John, Uwe Mock, Thomas Klemm, Kerstin Valentin, Klaus Beszteri, Bank Adaptive divergence across Southern Ocean gradients in the pelagic diatomFragilariopsis kerguelensis |
topic_facet |
ddc:no |
description |
The Southern Ocean is characterized by longitudinal water circulations crossed by strong latitudinal gradients. How this oceanographic background shapes planktonic populations is largely unknown, despite the significance of this region for global biogeochemical cycles. Here, we show, based on genomic, morphometric, ecophysiological and mating compatibility data, an example of ecotypic differentiation and speciation within an endemic pelagic inhabitant, the diatomFragilariopsis kerguelensis. We discovered three genotypic variants, one present throughout the latitudinal transect sampled, the others restricted to the north and south, respectively. The latter two showed reciprocal monophyly across all three genomes and significant ecophysiological differences consistent with local adaptation, but produced viable offspring in laboratory crosses. The third group was also reproductively isolated from the latter two. We hypothesize that this pattern originated by an adaptive expansion accompanied by ecotypic divergence, followed by sympatric speciation. |
format |
Article in Journal/Newspaper |
author |
Postel, Ute Glemser, Barbara Salazar Alekseyeva, Katherine Eggers, Sarah Lena Groth, Marco Gloeckner, Gernot John, Uwe Mock, Thomas Klemm, Kerstin Valentin, Klaus Beszteri, Bank |
author_facet |
Postel, Ute Glemser, Barbara Salazar Alekseyeva, Katherine Eggers, Sarah Lena Groth, Marco Gloeckner, Gernot John, Uwe Mock, Thomas Klemm, Kerstin Valentin, Klaus Beszteri, Bank |
author_sort |
Postel, Ute |
title |
Adaptive divergence across Southern Ocean gradients in the pelagic diatomFragilariopsis kerguelensis |
title_short |
Adaptive divergence across Southern Ocean gradients in the pelagic diatomFragilariopsis kerguelensis |
title_full |
Adaptive divergence across Southern Ocean gradients in the pelagic diatomFragilariopsis kerguelensis |
title_fullStr |
Adaptive divergence across Southern Ocean gradients in the pelagic diatomFragilariopsis kerguelensis |
title_full_unstemmed |
Adaptive divergence across Southern Ocean gradients in the pelagic diatomFragilariopsis kerguelensis |
title_sort |
adaptive divergence across southern ocean gradients in the pelagic diatomfragilariopsis kerguelensis |
publisher |
WILEY |
publishDate |
2020 |
url |
https://kups.ub.uni-koeln.de/32561/ |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_relation |
Postel, Ute, Glemser, Barbara, Salazar Alekseyeva, Katherine orcid:0000-0002-0088-4489 , Eggers, Sarah Lena orcid:0000-0001-6094-3201 , Groth, Marco orcid:0000-0002-9199-8990 , Gloeckner, Gernot, John, Uwe orcid:0000-0002-1297-4086 , Mock, Thomas orcid:0000-0001-9604-0362 , Klemm, Kerstin, Valentin, Klaus orcid:0000-0001-7401-9423 and Beszteri, Bank (2020). Adaptive divergence across Southern Ocean gradients in the pelagic diatomFragilariopsis kerguelensis. Mol. Ecol., 29 (24). S. 4913 - 4925. HOBOKEN: WILEY. ISSN 1365-294X |
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1766205701133172736 |