Genetic differentiation among Australian and Southern Ocean populations of the ubiquitous coccolithophore Emiliania huxleyi (Haptophyta)
Phytoplankton species with a cosmopolitan distribution are traditionally expected to show little genetic differentiation given the lack of geographical barriers in the ocean. To gain an understanding of the genetic variability within southern hemisphere populations of the coccolithophore Emiliania h...
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ftunivtasecite:oai:ecite.utas.edu.au:85289 2023-05-15T13:37:23+02:00 Genetic differentiation among Australian and Southern Ocean populations of the ubiquitous coccolithophore Emiliania huxleyi (Haptophyta) Cook, SS Jones, RC Vaillancourt, RE Hallegraeff, GM 2013 application/pdf http://www.intphycsoc.org/ https://doi.org/10.2216/12-111.1 http://ecite.utas.edu.au/85289 en eng International Phycological Society http://ecite.utas.edu.au/85289/1/Cook et al 2013.pdf http://dx.doi.org/10.2216/12-111.1 Cook, SS and Jones, RC and Vaillancourt, RE and Hallegraeff, GM, Genetic differentiation among Australian and Southern Ocean populations of the ubiquitous coccolithophore Emiliania huxleyi (Haptophyta), Phycologia, 52, (4) pp. 368-374. ISSN 0031-8884 (2013) [Refereed Article] http://ecite.utas.edu.au/85289 Biological Sciences Genetics Population Ecological and Evolutionary Genetics Refereed Article PeerReviewed 2013 ftunivtasecite https://doi.org/10.2216/12-111.1 2019-12-13T21:49:37Z Phytoplankton species with a cosmopolitan distribution are traditionally expected to show little genetic differentiation given the lack of geographical barriers in the ocean. To gain an understanding of the genetic variability within southern hemisphere populations of the coccolithophore Emiliania huxleyi , we used eight microsatellite markers to conduct a population genetic analysis on 273 clonal cultures collected from 11 sites in five ocean current systems south of Australia (Leeuwin, Zeehan, East Australian Currents) and in the Southern Ocean, including within the Antarctic Polar Front. Two of the five currently recognised morphotypes were represented, E. huxleyi var. huxleyi and E. huxleyi var. aurorae . Clonality was absent within sampled populations, suggesting the importance of sexual reproduction in the life cycle of this coccolithophore. Significant genetic differentiation (pairwise population F ST range = 0.010.09) was apparent among E. huxleyi var. huxleyi populations, much higher than for other cosmopolitan plankton species; thus, gene flow between populations must be low. There was evidence of marked differentiation between Southern Ocean populations of E. huxleyi var. aurorae and E. huxleyi var. huxleyi (pairwise F ST range = 0.120.16), suggesting the existence of a reproductive, environmental and/or biogeographical barrier between these two varieties. Article in Journal/Newspaper Antarc* Antarctic Southern Ocean eCite UTAS (University of Tasmania) Antarctic Southern Ocean The Antarctic Phycologia 52 4 368 374 |
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Open Polar |
collection |
eCite UTAS (University of Tasmania) |
op_collection_id |
ftunivtasecite |
language |
English |
topic |
Biological Sciences Genetics Population Ecological and Evolutionary Genetics |
spellingShingle |
Biological Sciences Genetics Population Ecological and Evolutionary Genetics Cook, SS Jones, RC Vaillancourt, RE Hallegraeff, GM Genetic differentiation among Australian and Southern Ocean populations of the ubiquitous coccolithophore Emiliania huxleyi (Haptophyta) |
topic_facet |
Biological Sciences Genetics Population Ecological and Evolutionary Genetics |
description |
Phytoplankton species with a cosmopolitan distribution are traditionally expected to show little genetic differentiation given the lack of geographical barriers in the ocean. To gain an understanding of the genetic variability within southern hemisphere populations of the coccolithophore Emiliania huxleyi , we used eight microsatellite markers to conduct a population genetic analysis on 273 clonal cultures collected from 11 sites in five ocean current systems south of Australia (Leeuwin, Zeehan, East Australian Currents) and in the Southern Ocean, including within the Antarctic Polar Front. Two of the five currently recognised morphotypes were represented, E. huxleyi var. huxleyi and E. huxleyi var. aurorae . Clonality was absent within sampled populations, suggesting the importance of sexual reproduction in the life cycle of this coccolithophore. Significant genetic differentiation (pairwise population F ST range = 0.010.09) was apparent among E. huxleyi var. huxleyi populations, much higher than for other cosmopolitan plankton species; thus, gene flow between populations must be low. There was evidence of marked differentiation between Southern Ocean populations of E. huxleyi var. aurorae and E. huxleyi var. huxleyi (pairwise F ST range = 0.120.16), suggesting the existence of a reproductive, environmental and/or biogeographical barrier between these two varieties. |
format |
Article in Journal/Newspaper |
author |
Cook, SS Jones, RC Vaillancourt, RE Hallegraeff, GM |
author_facet |
Cook, SS Jones, RC Vaillancourt, RE Hallegraeff, GM |
author_sort |
Cook, SS |
title |
Genetic differentiation among Australian and Southern Ocean populations of the ubiquitous coccolithophore Emiliania huxleyi (Haptophyta) |
title_short |
Genetic differentiation among Australian and Southern Ocean populations of the ubiquitous coccolithophore Emiliania huxleyi (Haptophyta) |
title_full |
Genetic differentiation among Australian and Southern Ocean populations of the ubiquitous coccolithophore Emiliania huxleyi (Haptophyta) |
title_fullStr |
Genetic differentiation among Australian and Southern Ocean populations of the ubiquitous coccolithophore Emiliania huxleyi (Haptophyta) |
title_full_unstemmed |
Genetic differentiation among Australian and Southern Ocean populations of the ubiquitous coccolithophore Emiliania huxleyi (Haptophyta) |
title_sort |
genetic differentiation among australian and southern ocean populations of the ubiquitous coccolithophore emiliania huxleyi (haptophyta) |
publisher |
International Phycological Society |
publishDate |
2013 |
url |
http://www.intphycsoc.org/ https://doi.org/10.2216/12-111.1 http://ecite.utas.edu.au/85289 |
geographic |
Antarctic Southern Ocean The Antarctic |
geographic_facet |
Antarctic Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Southern Ocean |
genre_facet |
Antarc* Antarctic Southern Ocean |
op_relation |
http://ecite.utas.edu.au/85289/1/Cook et al 2013.pdf http://dx.doi.org/10.2216/12-111.1 Cook, SS and Jones, RC and Vaillancourt, RE and Hallegraeff, GM, Genetic differentiation among Australian and Southern Ocean populations of the ubiquitous coccolithophore Emiliania huxleyi (Haptophyta), Phycologia, 52, (4) pp. 368-374. ISSN 0031-8884 (2013) [Refereed Article] http://ecite.utas.edu.au/85289 |
op_doi |
https://doi.org/10.2216/12-111.1 |
container_title |
Phycologia |
container_volume |
52 |
container_issue |
4 |
container_start_page |
368 |
op_container_end_page |
374 |
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1766090954946641920 |