Polar lakes may act as ecological islands to aquatic protists
10 pages, 3 figures, 3 tables, data accessibility AFLP input files: DRYAD entry https://doi.org/10.5061/dryad.87js01tv 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...
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Online Access: | http://hdl.handle.net/10261/91758 https://doi.org/10.1111/j.1365-294X.2012.05596.x |
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ftcsic:oai:digital.csic.es:10261/91758 2024-02-11T09:57:49+01:00 Polar lakes may act as ecological islands to aquatic protists Rengefors, Karin Logares, Ramiro Laybourn-Parry, Johanna 2012-07 http://hdl.handle.net/10261/91758 https://doi.org/10.1111/j.1365-294X.2012.05596.x en eng Wiley-Blackwell https://doi.org/10.1111/j.1365-294X.2012.05596.x doi:10.1111/j.1365-294X.2012.05596.x issn: 0962-1083 e-issn: 1365-294X Molecular Ecology 21(13): 3200-3209 (2012) http://hdl.handle.net/10261/91758 22564188 open Antarctica Dinoflagellates Genetic diversity Biogeography Population genetics Protists artículo http://purl.org/coar/resource_type/c_6501 2012 ftcsic https://doi.org/10.1111/j.1365-294X.2012.05596.x 2024-01-16T09:56:26Z 10 pages, 3 figures, 3 tables, data accessibility AFLP input files: DRYAD entry https://doi.org/10.5061/dryad.87js01tv 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 because of small body size could have profound implications on their genetic diversity and population structure. Here, we have analysed 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 amplified fragment length polymorphism (AFLP). Our results show high genetic differentiation among lake populations despite their close geographic proximity (<9 km). Moreover, genotype diversity was high within populations. Gene flow in this system is clearly limited, either because of 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. © 2012 Blackwell Publishing Ltd. This project was supported by the Swedish Research Council Grant 90532401 to K.R. and an Australian Antarctic Research Assessment Committee grant (AREC 3022). R.L. was financially supported by a Marie Curie Intra-European Fellowship grant PIEF-GA-2009-235365 Peer Reviewed Article in Journal/Newspaper Antarc* Antarctic Antarctica Digital.CSIC (Spanish National Research Council) Antarctic Vestfold Vestfold Hills Molecular Ecology 21 13 3200 3209 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
English |
topic |
Antarctica Dinoflagellates Genetic diversity Biogeography Population genetics Protists |
spellingShingle |
Antarctica Dinoflagellates Genetic diversity Biogeography Population genetics Protists Rengefors, Karin Logares, Ramiro Laybourn-Parry, Johanna Polar lakes may act as ecological islands to aquatic protists |
topic_facet |
Antarctica Dinoflagellates Genetic diversity Biogeography Population genetics Protists |
description |
10 pages, 3 figures, 3 tables, data accessibility AFLP input files: DRYAD entry https://doi.org/10.5061/dryad.87js01tv 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 because of small body size could have profound implications on their genetic diversity and population structure. Here, we have analysed 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 amplified fragment length polymorphism (AFLP). Our results show high genetic differentiation among lake populations despite their close geographic proximity (<9 km). Moreover, genotype diversity was high within populations. Gene flow in this system is clearly limited, either because of 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. © 2012 Blackwell Publishing Ltd. This project was supported by the Swedish Research Council Grant 90532401 to K.R. and an Australian Antarctic Research Assessment Committee grant (AREC 3022). R.L. was financially supported by a Marie Curie Intra-European Fellowship grant PIEF-GA-2009-235365 Peer Reviewed |
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 |
Polar lakes may act as ecological islands to aquatic protists |
title_short |
Polar lakes may act as ecological islands to aquatic protists |
title_full |
Polar lakes may act as ecological islands to aquatic protists |
title_fullStr |
Polar lakes may act as ecological islands to aquatic protists |
title_full_unstemmed |
Polar lakes may act as ecological islands to aquatic protists |
title_sort |
polar lakes may act as ecological islands to aquatic protists |
publisher |
Wiley-Blackwell |
publishDate |
2012 |
url |
http://hdl.handle.net/10261/91758 https://doi.org/10.1111/j.1365-294X.2012.05596.x |
geographic |
Antarctic Vestfold Vestfold Hills |
geographic_facet |
Antarctic Vestfold Vestfold Hills |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_relation |
https://doi.org/10.1111/j.1365-294X.2012.05596.x doi:10.1111/j.1365-294X.2012.05596.x issn: 0962-1083 e-issn: 1365-294X Molecular Ecology 21(13): 3200-3209 (2012) http://hdl.handle.net/10261/91758 22564188 |
op_rights |
open |
op_doi |
https://doi.org/10.1111/j.1365-294X.2012.05596.x |
container_title |
Molecular Ecology |
container_volume |
21 |
container_issue |
13 |
container_start_page |
3200 |
op_container_end_page |
3209 |
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1790593369846579200 |