Bacterial epibiont communities of panmictic Antarctic krill are spatially structured
© 2020 John Wiley & Sons Ltd..
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.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2021 |
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| Erschienen: |
2021 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:30 |
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| Enthalten in: |
Molecular ecology - 30(2021), 4 vom: 01. Feb., Seite 1042-1052 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Clarke, Laurence J [VerfasserIn] |
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| Links: |
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| Themen: |
Bacteria |
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| Anmerkungen: |
Date Completed 21.06.2021 Date Revised 21.06.2021 published: Print-Electronic Citation Status MEDLINE |
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| doi: |
10.1111/mec.15771 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM318656558 |
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| 245 | 1 | 0 | |a Bacterial epibiont communities of panmictic Antarctic krill are spatially structured |
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| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status MEDLINE | ||
| 520 | |a © 2020 John Wiley & Sons Ltd. | ||
| 520 | |a 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 | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Research Support, Non-U.S. Gov't | |
| 650 | 4 | |a bacteria | |
| 650 | 4 | |a crustaceans | |
| 650 | 4 | |a fisheries management | |
| 650 | 4 | |a microbial biology | |
| 650 | 4 | |a population dynamics | |
| 650 | 7 | |a RNA, Ribosomal, 16S |2 NLM | |
| 700 | 1 | |a Suter, Léonie |e verfasserin |4 aut | |
| 700 | 1 | |a King, Rob |e verfasserin |4 aut | |
| 700 | 1 | |a Bissett, Andrew |e verfasserin |4 aut | |
| 700 | 1 | |a Bestley, Sophie |e verfasserin |4 aut | |
| 700 | 1 | |a Deagle, Bruce E |e verfasserin |4 aut | |
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