Bacterial epibiont communities of panmictic Antarctic krill are spatially structured
Abstract Antarctic krill ( Euphausia superba ) are amongst the most abundant animals on Earth, with a circumpolar distribution in the Southern Ocean. Genetic and genomic studies have failed to detect any population structure for the species, suggesting a single panmictic population. However, the hyp...
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Online Access: | http://dx.doi.org/10.1111/mec.15771 https://onlinelibrary.wiley.com/doi/pdf/10.1111/mec.15771 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/mec.15771 |
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crwiley:10.1111/mec.15771 2024-04-28T08:02:20+00:00 Bacterial epibiont communities of panmictic Antarctic krill are spatially structured Clarke, Laurence J. Suter, Léonie King, Rob Bissett, Andrew Bestley, Sophie Deagle, Bruce E. Australian Antarctic Division Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung 2021 http://dx.doi.org/10.1111/mec.15771 https://onlinelibrary.wiley.com/doi/pdf/10.1111/mec.15771 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/mec.15771 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Molecular Ecology volume 30, issue 4, page 1042-1052 ISSN 0962-1083 1365-294X Genetics Ecology, Evolution, Behavior and Systematics journal-article 2021 crwiley https://doi.org/10.1111/mec.15771 2024-04-05T07:41:32Z Abstract Antarctic krill ( Euphausia superba ) are amongst the most abundant animals on Earth, with a circumpolar distribution in the Southern Ocean. Genetic and genomic studies have failed to detect any population structure for the species, suggesting a single panmictic population. However, the hyper‐abundance of krill slows the rate of genetic differentiation, masking potential underlying structure. Here we use high‐throughput sequencing of bacterial 16S rRNA genes to show that krill bacterial epibiont communities exhibit spatial structuring, driven mainly by distance rather than environmental factors, especially for strongly krill‐associated bacteria. Estimating the ecological processes driving bacterial community turnover indicated this was driven by bacterial dispersal limitation increasing with geographic distance. Furthermore, divergent epibiont communities generated from a single krill swarm split between aquarium tanks under near‐identical conditions suggests physical isolation in itself can cause krill‐associated bacterial communities to diverge. Our findings show that Antarctic krill‐associated bacterial communities are geographically structured, in direct contrast with the lack of structure observed for krill genetic and genomic data. Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill Euphausia superba Southern Ocean Wiley Online Library Molecular Ecology 30 4 1042 1052 |
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Open Polar |
collection |
Wiley Online Library |
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crwiley |
language |
English |
topic |
Genetics Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Genetics Ecology, Evolution, Behavior and Systematics Clarke, Laurence J. Suter, Léonie King, Rob Bissett, Andrew Bestley, Sophie Deagle, Bruce E. Bacterial epibiont communities of panmictic Antarctic krill are spatially structured |
topic_facet |
Genetics Ecology, Evolution, Behavior and Systematics |
description |
Abstract Antarctic krill ( Euphausia superba ) are amongst the most abundant animals on Earth, with a circumpolar distribution in the Southern Ocean. Genetic and genomic studies have failed to detect any population structure for the species, suggesting a single panmictic population. However, the hyper‐abundance of krill slows the rate of genetic differentiation, masking potential underlying structure. Here we use high‐throughput sequencing of bacterial 16S rRNA genes to show that krill bacterial epibiont communities exhibit spatial structuring, driven mainly by distance rather than environmental factors, especially for strongly krill‐associated bacteria. Estimating the ecological processes driving bacterial community turnover indicated this was driven by bacterial dispersal limitation increasing with geographic distance. Furthermore, divergent epibiont communities generated from a single krill swarm split between aquarium tanks under near‐identical conditions suggests physical isolation in itself can cause krill‐associated bacterial communities to diverge. Our findings show that Antarctic krill‐associated bacterial communities are geographically structured, in direct contrast with the lack of structure observed for krill genetic and genomic data. |
author2 |
Australian Antarctic Division Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung |
format |
Article in Journal/Newspaper |
author |
Clarke, Laurence J. Suter, Léonie King, Rob Bissett, Andrew Bestley, Sophie Deagle, Bruce E. |
author_facet |
Clarke, Laurence J. Suter, Léonie King, Rob Bissett, Andrew Bestley, Sophie Deagle, Bruce E. |
author_sort |
Clarke, Laurence J. |
title |
Bacterial epibiont communities of panmictic Antarctic krill are spatially structured |
title_short |
Bacterial epibiont communities of panmictic Antarctic krill are spatially structured |
title_full |
Bacterial epibiont communities of panmictic Antarctic krill are spatially structured |
title_fullStr |
Bacterial epibiont communities of panmictic Antarctic krill are spatially structured |
title_full_unstemmed |
Bacterial epibiont communities of panmictic Antarctic krill are spatially structured |
title_sort |
bacterial epibiont communities of panmictic antarctic krill are spatially structured |
publisher |
Wiley |
publishDate |
2021 |
url |
http://dx.doi.org/10.1111/mec.15771 https://onlinelibrary.wiley.com/doi/pdf/10.1111/mec.15771 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/mec.15771 |
genre |
Antarc* Antarctic Antarctic Krill Euphausia superba Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Krill Euphausia superba Southern Ocean |
op_source |
Molecular Ecology volume 30, issue 4, page 1042-1052 ISSN 0962-1083 1365-294X |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/mec.15771 |
container_title |
Molecular Ecology |
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30 |
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4 |
container_start_page |
1042 |
op_container_end_page |
1052 |
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1797573727274139648 |