Between- and within-population variations in thermal reaction norms of the coccolithophore Emiliania huxleyi
Thermal reaction norms for growth rates of six Emiliania huxleyi isolates originating from the central Atlantic (Azores, Portugal) and five isolates from the coastal North Atlantic (Bergen, Norway) were assessed. We used the template mode of variation model to decompose variations in growth rates in...
Published in: | Limnology and Oceanography |
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Online Access: | https://epubs.scu.edu.au/esm_pubs/2790 https://doi.org/10.4319/lo.2014.59.5.1570 |
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ftsoutherncu:oai:epubs.scu.edu.au:esm_pubs-3806 2023-05-15T17:33:45+02:00 Between- and within-population variations in thermal reaction norms of the coccolithophore Emiliania huxleyi Zhang, Yong Klapper, Regina Lohbeck, Kai T Bach, Lennart T Schulz, Kai G Reusch, Thorsten BH Riebessell, Ulf 2014-01-01T08:00:00Z https://epubs.scu.edu.au/esm_pubs/2790 https://doi.org/10.4319/lo.2014.59.5.1570 unknown ePublications@SCU School of Environment, Science and Engineering Papers Environmental Sciences article 2014 ftsoutherncu https://doi.org/10.4319/lo.2014.59.5.1570 2019-08-06T12:52:57Z Thermal reaction norms for growth rates of six Emiliania huxleyi isolates originating from the central Atlantic (Azores, Portugal) and five isolates from the coastal North Atlantic (Bergen, Norway) were assessed. We used the template mode of variation model to decompose variations in growth rates into modes of biological interest: vertical shift, horizontal shift, and generalist—specialist variation. In line with the actual habitat conditions, isolates from Bergen (Bergen population) grew well at lower temperatures, and isolates from the Azores (Azores population) performed better at higher temperatures. The optimum growth temperature of the Azores population was significantly higher than that of the Bergen population. Neutral genetic differentiation was found between populations by microsatellite analysis. These findings indicate that E. huxleyi populations are adapted to local temperature regimes. Next to between-population variation, we also found variation within populations. Genotype-by-environment interactions resulted in the most pronounced phenotypic differences when isolates were exposed to temperatures outside the range they naturally encounter. Variation in thermal reaction norms between and within populations emphasizes the importance of using more than one isolate when studying the consequences of global change on marine phytoplankton. Phenotypic plasticity and standing genetic variation will be important in determining the potential of naturalE. huxleyi populations to cope with global climate change. Article in Journal/Newspaper North Atlantic Southern Cross University: epublications@SCU Bergen Norway Limnology and Oceanography 59 5 1570 1580 |
institution |
Open Polar |
collection |
Southern Cross University: epublications@SCU |
op_collection_id |
ftsoutherncu |
language |
unknown |
topic |
Environmental Sciences |
spellingShingle |
Environmental Sciences Zhang, Yong Klapper, Regina Lohbeck, Kai T Bach, Lennart T Schulz, Kai G Reusch, Thorsten BH Riebessell, Ulf Between- and within-population variations in thermal reaction norms of the coccolithophore Emiliania huxleyi |
topic_facet |
Environmental Sciences |
description |
Thermal reaction norms for growth rates of six Emiliania huxleyi isolates originating from the central Atlantic (Azores, Portugal) and five isolates from the coastal North Atlantic (Bergen, Norway) were assessed. We used the template mode of variation model to decompose variations in growth rates into modes of biological interest: vertical shift, horizontal shift, and generalist—specialist variation. In line with the actual habitat conditions, isolates from Bergen (Bergen population) grew well at lower temperatures, and isolates from the Azores (Azores population) performed better at higher temperatures. The optimum growth temperature of the Azores population was significantly higher than that of the Bergen population. Neutral genetic differentiation was found between populations by microsatellite analysis. These findings indicate that E. huxleyi populations are adapted to local temperature regimes. Next to between-population variation, we also found variation within populations. Genotype-by-environment interactions resulted in the most pronounced phenotypic differences when isolates were exposed to temperatures outside the range they naturally encounter. Variation in thermal reaction norms between and within populations emphasizes the importance of using more than one isolate when studying the consequences of global change on marine phytoplankton. Phenotypic plasticity and standing genetic variation will be important in determining the potential of naturalE. huxleyi populations to cope with global climate change. |
format |
Article in Journal/Newspaper |
author |
Zhang, Yong Klapper, Regina Lohbeck, Kai T Bach, Lennart T Schulz, Kai G Reusch, Thorsten BH Riebessell, Ulf |
author_facet |
Zhang, Yong Klapper, Regina Lohbeck, Kai T Bach, Lennart T Schulz, Kai G Reusch, Thorsten BH Riebessell, Ulf |
author_sort |
Zhang, Yong |
title |
Between- and within-population variations in thermal reaction norms of the coccolithophore Emiliania huxleyi |
title_short |
Between- and within-population variations in thermal reaction norms of the coccolithophore Emiliania huxleyi |
title_full |
Between- and within-population variations in thermal reaction norms of the coccolithophore Emiliania huxleyi |
title_fullStr |
Between- and within-population variations in thermal reaction norms of the coccolithophore Emiliania huxleyi |
title_full_unstemmed |
Between- and within-population variations in thermal reaction norms of the coccolithophore Emiliania huxleyi |
title_sort |
between- and within-population variations in thermal reaction norms of the coccolithophore emiliania huxleyi |
publisher |
ePublications@SCU |
publishDate |
2014 |
url |
https://epubs.scu.edu.au/esm_pubs/2790 https://doi.org/10.4319/lo.2014.59.5.1570 |
geographic |
Bergen Norway |
geographic_facet |
Bergen Norway |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
School of Environment, Science and Engineering Papers |
op_doi |
https://doi.org/10.4319/lo.2014.59.5.1570 |
container_title |
Limnology and Oceanography |
container_volume |
59 |
container_issue |
5 |
container_start_page |
1570 |
op_container_end_page |
1580 |
_version_ |
1766132354526478336 |