Polar lakes may act as ecological islands to aquatic protists
Abstract 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...
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Online Access: | http://dx.doi.org/10.1111/j.1365-294x.2012.05596.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-294X.2012.05596.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-294X.2012.05596.x https://onlinelibrary.wiley.com/doi/full-xml/10.1111/j.1365-294X.2012.05596.x |
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crwiley:10.1111/j.1365-294x.2012.05596.x 2024-09-15T17:44:39+00:00 Polar lakes may act as ecological islands to aquatic protists RENGEFORS, K. LOGARES, R. LAYBOURN‐PARRY, J. 2012 http://dx.doi.org/10.1111/j.1365-294x.2012.05596.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-294X.2012.05596.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-294X.2012.05596.x https://onlinelibrary.wiley.com/doi/full-xml/10.1111/j.1365-294X.2012.05596.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor http://doi.wiley.com/10.1002/tdm_license_1.1 Molecular Ecology volume 21, issue 13, page 3200-3209 ISSN 0962-1083 1365-294X journal-article 2012 crwiley https://doi.org/10.1111/j.1365-294x.2012.05596.x 2024-08-09T04:26:22Z Abstract 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. Article in Journal/Newspaper Antarc* Antarctica Wiley Online Library Molecular Ecology 21 13 3200 3209 |
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Wiley Online Library |
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English |
description |
Abstract 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. |
format |
Article in Journal/Newspaper |
author |
RENGEFORS, K. LOGARES, R. LAYBOURN‐PARRY, J. |
spellingShingle |
RENGEFORS, K. LOGARES, R. LAYBOURN‐PARRY, J. Polar lakes may act as ecological islands to aquatic protists |
author_facet |
RENGEFORS, K. LOGARES, R. LAYBOURN‐PARRY, J. |
author_sort |
RENGEFORS, K. |
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 |
publishDate |
2012 |
url |
http://dx.doi.org/10.1111/j.1365-294x.2012.05596.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-294X.2012.05596.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-294X.2012.05596.x https://onlinelibrary.wiley.com/doi/full-xml/10.1111/j.1365-294X.2012.05596.x |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
Molecular Ecology volume 21, issue 13, page 3200-3209 ISSN 0962-1083 1365-294X |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor http://doi.wiley.com/10.1002/tdm_license_1.1 |
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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1810492293993463808 |