Host dispersal relaxes selective pressures in rafting microbiomes and triggers successional changes
Abstract What little we know about how microbiomes change over the course of host dispersal has been gleaned from simulations or snapshot sampling of microbiomes of hosts undertaking regular, cyclical migrations. These studies suggest that major changes in both microbiome richness and turnover occur...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2024-12-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-024-54954-z |
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| author | William S. Pearman Grant A. Duffy Robert O. Smith Kim I. Currie Neil J. Gemmell Sergio E. Morales Ceridwen I. Fraser |
| author_facet | William S. Pearman Grant A. Duffy Robert O. Smith Kim I. Currie Neil J. Gemmell Sergio E. Morales Ceridwen I. Fraser |
| author_sort | William S. Pearman |
| collection | DOAJ |
| description | Abstract What little we know about how microbiomes change over the course of host dispersal has been gleaned from simulations or snapshot sampling of microbiomes of hosts undertaking regular, cyclical migrations. These studies suggest that major changes in both microbiome richness and turnover occur in response to long-distance movements, but we do not yet know how rare or sporadic dispersal events for non-migratory organisms might affect the microbiomes of their hosts. Here we directly examine the microbiomes of rafting seaweed, leveraging host genomic analyses, amplicon sequencing, and oceanographic modelling to study the impacts of ecological dispersal of hosts on their microbiomes. We find that once dislodged from coastal shores and adrift, kelp-associated microbial communities change profoundly—the core microbes found on attached kelp give way to a few abundant taxa and many rare taxa. Changes in microbial species richness and composition are strongly linked to variability in sea surface temperature rather than length of time spent rafting. These changes are associated with increased contributions of neutral processes shaping community assembly. These findings highlight the role of environmental predictability in triggering major community successional changes and challenge the importance of host selection in determining the microbiome. |
| format | Article |
| id | doaj-art-881d29bacb6743c183273314bed0d940 |
| institution | Kabale University |
| issn | 2041-1723 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-881d29bacb6743c183273314bed0d9402025-01-05T12:36:05ZengNature PortfolioNature Communications2041-17232024-12-0115111310.1038/s41467-024-54954-zHost dispersal relaxes selective pressures in rafting microbiomes and triggers successional changesWilliam S. Pearman0Grant A. Duffy1Robert O. Smith2Kim I. Currie3Neil J. Gemmell4Sergio E. Morales5Ceridwen I. Fraser6Department of Marine Science, University of OtagoDepartment of Marine Science, University of OtagoDepartment of Marine Science, University of OtagoNational Institute of Water and Atmospheric ResearchDepartment of Anatomy, School of Biomedical Sciences, University of OtagoDepartment of Microbiology and Immunology, School of Biomedical Sciences, University of OtagoDepartment of Marine Science, University of OtagoAbstract What little we know about how microbiomes change over the course of host dispersal has been gleaned from simulations or snapshot sampling of microbiomes of hosts undertaking regular, cyclical migrations. These studies suggest that major changes in both microbiome richness and turnover occur in response to long-distance movements, but we do not yet know how rare or sporadic dispersal events for non-migratory organisms might affect the microbiomes of their hosts. Here we directly examine the microbiomes of rafting seaweed, leveraging host genomic analyses, amplicon sequencing, and oceanographic modelling to study the impacts of ecological dispersal of hosts on their microbiomes. We find that once dislodged from coastal shores and adrift, kelp-associated microbial communities change profoundly—the core microbes found on attached kelp give way to a few abundant taxa and many rare taxa. Changes in microbial species richness and composition are strongly linked to variability in sea surface temperature rather than length of time spent rafting. These changes are associated with increased contributions of neutral processes shaping community assembly. These findings highlight the role of environmental predictability in triggering major community successional changes and challenge the importance of host selection in determining the microbiome.https://doi.org/10.1038/s41467-024-54954-z |
| spellingShingle | William S. Pearman Grant A. Duffy Robert O. Smith Kim I. Currie Neil J. Gemmell Sergio E. Morales Ceridwen I. Fraser Host dispersal relaxes selective pressures in rafting microbiomes and triggers successional changes Nature Communications |
| title | Host dispersal relaxes selective pressures in rafting microbiomes and triggers successional changes |
| title_full | Host dispersal relaxes selective pressures in rafting microbiomes and triggers successional changes |
| title_fullStr | Host dispersal relaxes selective pressures in rafting microbiomes and triggers successional changes |
| title_full_unstemmed | Host dispersal relaxes selective pressures in rafting microbiomes and triggers successional changes |
| title_short | Host dispersal relaxes selective pressures in rafting microbiomes and triggers successional changes |
| title_sort | host dispersal relaxes selective pressures in rafting microbiomes and triggers successional changes |
| url | https://doi.org/10.1038/s41467-024-54954-z |
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