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Invasive freshwater snails form novel microbial relationships

View ORCID ProfileL. Bankers, D. Dahan, M. Neiman, C. Adrian-Tucci, C. Frost, G.D.D. Hurst, K.C. King
doi: https://doi.org/10.1101/2020.04.29.069013
L. Bankers
1University of Iowa, Department of Biology, Iowa City, IA, USA
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  • For correspondence: laura.bankers@cuanschutz.edu
D. Dahan
2Stanford University, School of Medicine, Stanford, CA, USA
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M. Neiman
1University of Iowa, Department of Biology, Iowa City, IA, USA
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C. Adrian-Tucci
1University of Iowa, Department of Biology, Iowa City, IA, USA
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C. Frost
3University of Liverpool, Institute of Integrative Biology, Liverpool, UK
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G.D.D. Hurst
3University of Liverpool, Institute of Integrative Biology, Liverpool, UK
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K.C. King
4University of Oxford, Department of Zoology, Oxford, UK
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ABSTRACT

Resident microbes (microbiota) can shape host organismal function and adaptation in the face of environmental change. Invasion of new habitats exposes hosts to novel selection pressures, but little is known about the impact of invasion on microbiota and the host-microbiome relationship after this transition (e.g., how rapidly symbioses are formed, whether microbes influence invasion success). We used high-throughput 16S rRNA sequencing of New Zealand (native) and European (invasive) populations of the freshwater snail Potamopyrgus antipodarum and found that while invaders do carry over some core microbial taxa from New Zealand, most of their microbial community is distinct. This finding highlights that invasions can result in the formation of novel symbioses. We further show that the native microbiome is composed of fewer core microbes than the microbiome of invasive snails, suggesting that the microbiota is streamlined to essential members. Together, our findings demonstrate that microbiota comparisons across native and invasive populations can reveal the impact of a long coevolutionary history and specialization of microbes in the native host range, as well as new associations occurring after invasion. We lay essential groundwork for understanding how microbial relationships affect invasion success and how microbes may be utilized in the control of invasive hosts.

Competing Interest Statement

The authors have declared no competing interest.

Copyright 
The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY-NC-ND 4.0 International license.
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Posted August 18, 2020.
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Invasive freshwater snails form novel microbial relationships
L. Bankers, D. Dahan, M. Neiman, C. Adrian-Tucci, C. Frost, G.D.D. Hurst, K.C. King
bioRxiv 2020.04.29.069013; doi: https://doi.org/10.1101/2020.04.29.069013
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Invasive freshwater snails form novel microbial relationships
L. Bankers, D. Dahan, M. Neiman, C. Adrian-Tucci, C. Frost, G.D.D. Hurst, K.C. King
bioRxiv 2020.04.29.069013; doi: https://doi.org/10.1101/2020.04.29.069013

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