Bacterial epibiont communities of panmictic Antarctic krill are spatially structured
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‐abunda...
Published in: | Molecular Ecology |
---|---|
Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Blackwell Publishing Ltd
2020
|
Subjects: | |
Online Access: | https://doi.org/10.1111/mec.15771 http://www.ncbi.nlm.nih.gov/pubmed/33300251 http://ecite.utas.edu.au/142051 |
id |
ftunivtasecite:oai:ecite.utas.edu.au:142051 |
---|---|
record_format |
openpolar |
spelling |
ftunivtasecite:oai:ecite.utas.edu.au:142051 2023-05-15T13:42:40+02:00 Bacterial epibiont communities of panmictic Antarctic krill are spatially structured Clarke, LJ Suter, L King, R Bissett, A Bestley, S Deagle, BE 2020 application/pdf https://doi.org/10.1111/mec.15771 http://www.ncbi.nlm.nih.gov/pubmed/33300251 http://ecite.utas.edu.au/142051 en eng Blackwell Publishing Ltd http://ecite.utas.edu.au/142051/1/142051 - Bacterial epibiont communities of panmictic Antarctic krill_OA.pdf http://dx.doi.org/10.1111/mec.15771 http://purl.org/au-research/grants/arc/DE180100828 Clarke, LJ and Suter, L and King, R and Bissett, A and Bestley, S and Deagle, BE, Bacterial epibiont communities of panmictic Antarctic krill are spatially structured, Molecular Ecology, 30, (4) pp. 1042-1052. ISSN 0962-1083 (2020) [Refereed Article] http://www.ncbi.nlm.nih.gov/pubmed/33300251 http://ecite.utas.edu.au/142051 Biological Sciences Microbiology Microbial ecology Refereed Article PeerReviewed 2020 ftunivtasecite https://doi.org/10.1111/mec.15771 2022-08-29T22:18:13Z 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 eCite UTAS (University of Tasmania) Antarctic Southern Ocean Molecular Ecology 30 4 1042 1052 |
institution |
Open Polar |
collection |
eCite UTAS (University of Tasmania) |
op_collection_id |
ftunivtasecite |
language |
English |
topic |
Biological Sciences Microbiology Microbial ecology |
spellingShingle |
Biological Sciences Microbiology Microbial ecology Clarke, LJ Suter, L King, R Bissett, A Bestley, S Deagle, BE Bacterial epibiont communities of panmictic Antarctic krill are spatially structured |
topic_facet |
Biological Sciences Microbiology Microbial ecology |
description |
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. |
format |
Article in Journal/Newspaper |
author |
Clarke, LJ Suter, L King, R Bissett, A Bestley, S Deagle, BE |
author_facet |
Clarke, LJ Suter, L King, R Bissett, A Bestley, S Deagle, BE |
author_sort |
Clarke, LJ |
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 |
Blackwell Publishing Ltd |
publishDate |
2020 |
url |
https://doi.org/10.1111/mec.15771 http://www.ncbi.nlm.nih.gov/pubmed/33300251 http://ecite.utas.edu.au/142051 |
geographic |
Antarctic Southern Ocean |
geographic_facet |
Antarctic Southern Ocean |
genre |
Antarc* Antarctic Antarctic Krill Euphausia superba Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Krill Euphausia superba Southern Ocean |
op_relation |
http://ecite.utas.edu.au/142051/1/142051 - Bacterial epibiont communities of panmictic Antarctic krill_OA.pdf http://dx.doi.org/10.1111/mec.15771 http://purl.org/au-research/grants/arc/DE180100828 Clarke, LJ and Suter, L and King, R and Bissett, A and Bestley, S and Deagle, BE, Bacterial epibiont communities of panmictic Antarctic krill are spatially structured, Molecular Ecology, 30, (4) pp. 1042-1052. ISSN 0962-1083 (2020) [Refereed Article] http://www.ncbi.nlm.nih.gov/pubmed/33300251 http://ecite.utas.edu.au/142051 |
op_doi |
https://doi.org/10.1111/mec.15771 |
container_title |
Molecular Ecology |
container_volume |
30 |
container_issue |
4 |
container_start_page |
1042 |
op_container_end_page |
1052 |
_version_ |
1766171190962946048 |