Data from: Polar lakes may act as ecological islands to aquatic protists
A fundamental question in ecology is whether microorganisms follow the same patterns as multicellular organisms when it comes to population structure and levels of genetic diversity. Enormous population sizes, predominately asexual reproduction, and presumably high dispersal due to small body size c...
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ftdryad:oai:v1.datadryad.org:10255/dryad.38326 2023-05-15T13:30:49+02:00 Data from: Polar lakes may act as ecological islands to aquatic protists Rengefors, Karin Logares, Ramiro Laybourn-Parry, Johanna Vestfold Hills Antarctica 2012-03-28T19:53:27Z http://hdl.handle.net/10255/dryad.38326 https://doi.org/10.5061/dryad.87js01tv unknown doi:10.5061/dryad.87js01tv/1 doi:10.1111/j.1365-294X.2012.05596.x PMID:22564188 doi:10.5061/dryad.87js01tv Rengefors K, Logares R, Laybourn-Parry J (2012) Polar lakes may act as ecological islands to aquatic protists. Molecular Ecology 21(13): 3200-3209. http://hdl.handle.net/10255/dryad.38326 Algae Population Ecology Population Genetics - Empirical Protists Phylogeography Article 2012 ftdryad https://doi.org/10.5061/dryad.87js01tv https://doi.org/10.5061/dryad.87js01tv/1 https://doi.org/10.1111/j.1365-294X.2012.05596.x 2020-01-01T14:55:54Z A fundamental question in ecology is whether microorganisms follow the same patterns as multicellular organisms when it comes to population structure and levels of genetic diversity. Enormous population sizes, predominately asexual reproduction, and presumably high dispersal due to small body size could have profound implications on their genetic diversity and population structure. Here, we have analyzed the population genetic structure in a lake-dwelling microbial eukaryote (dinoflagellate) and tested the hypothesis that there is population genetic differentiation among nearby lake subpopulations. This dinoflagellate occurs in the marine-derived saline lakes of the Vestfold Hills, Antarctica, which are ice-covered most of the year. Clonal strains were isolated from four different lakes, and were genotyped using AFLP (Amplified Fragment Length Polymorphism). Our results show high genetic differentiation among lake populations despite their close geographical proximity (< 9 km). Moreover, genotype diversity was high within populations. Gene flow in this system is clearly limited, either due to physical or biological barriers. Our results discard the null hypothesis that there is free gene flow among protist lake populations. Instead, limnetic protist populations may differentiate genetically, and lakes act as ecological islands even on the microbial scale. Article in Journal/Newspaper Antarc* Antarctica Dryad Digital Repository (Duke University) Vestfold Vestfold Hills |
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Open Polar |
collection |
Dryad Digital Repository (Duke University) |
op_collection_id |
ftdryad |
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unknown |
topic |
Algae Population Ecology Population Genetics - Empirical Protists Phylogeography |
spellingShingle |
Algae Population Ecology Population Genetics - Empirical Protists Phylogeography Rengefors, Karin Logares, Ramiro Laybourn-Parry, Johanna Data from: Polar lakes may act as ecological islands to aquatic protists |
topic_facet |
Algae Population Ecology Population Genetics - Empirical Protists Phylogeography |
description |
A fundamental question in ecology is whether microorganisms follow the same patterns as multicellular organisms when it comes to population structure and levels of genetic diversity. Enormous population sizes, predominately asexual reproduction, and presumably high dispersal due to small body size could have profound implications on their genetic diversity and population structure. Here, we have analyzed the population genetic structure in a lake-dwelling microbial eukaryote (dinoflagellate) and tested the hypothesis that there is population genetic differentiation among nearby lake subpopulations. This dinoflagellate occurs in the marine-derived saline lakes of the Vestfold Hills, Antarctica, which are ice-covered most of the year. Clonal strains were isolated from four different lakes, and were genotyped using AFLP (Amplified Fragment Length Polymorphism). Our results show high genetic differentiation among lake populations despite their close geographical proximity (< 9 km). Moreover, genotype diversity was high within populations. Gene flow in this system is clearly limited, either due to physical or biological barriers. Our results discard the null hypothesis that there is free gene flow among protist lake populations. Instead, limnetic protist populations may differentiate genetically, and lakes act as ecological islands even on the microbial scale. |
format |
Article in Journal/Newspaper |
author |
Rengefors, Karin Logares, Ramiro Laybourn-Parry, Johanna |
author_facet |
Rengefors, Karin Logares, Ramiro Laybourn-Parry, Johanna |
author_sort |
Rengefors, Karin |
title |
Data from: Polar lakes may act as ecological islands to aquatic protists |
title_short |
Data from: Polar lakes may act as ecological islands to aquatic protists |
title_full |
Data from: Polar lakes may act as ecological islands to aquatic protists |
title_fullStr |
Data from: Polar lakes may act as ecological islands to aquatic protists |
title_full_unstemmed |
Data from: Polar lakes may act as ecological islands to aquatic protists |
title_sort |
data from: polar lakes may act as ecological islands to aquatic protists |
publishDate |
2012 |
url |
http://hdl.handle.net/10255/dryad.38326 https://doi.org/10.5061/dryad.87js01tv |
op_coverage |
Vestfold Hills Antarctica |
geographic |
Vestfold Vestfold Hills |
geographic_facet |
Vestfold Vestfold Hills |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_relation |
doi:10.5061/dryad.87js01tv/1 doi:10.1111/j.1365-294X.2012.05596.x PMID:22564188 doi:10.5061/dryad.87js01tv Rengefors K, Logares R, Laybourn-Parry J (2012) Polar lakes may act as ecological islands to aquatic protists. Molecular Ecology 21(13): 3200-3209. http://hdl.handle.net/10255/dryad.38326 |
op_doi |
https://doi.org/10.5061/dryad.87js01tv https://doi.org/10.5061/dryad.87js01tv/1 https://doi.org/10.1111/j.1365-294X.2012.05596.x |
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