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Fickle or Faithful: The Roles of Host and Environmental Context in Determining Symbiont Composition in Two Bathymodioline Mussels

The Mediterranean Sea and adjoining East Atlantic Ocean host a diverse array of small-sized mussels that predominantly live on sunken, decomposing organic remains. At least two of these, Idas modiolaeformis and Idas simpsoni, are known to engage in gill-associated symbioses; however, the composition...

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Autores principales: Laming, Sven R., Szafranski, Kamil M., Rodrigues, Clara F., Gaudron, Sylvie M., Cunha, Marina R., Hilário, Ana, Le Bris, Nadine, Duperron, Sébastien
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4692436/
https://www.ncbi.nlm.nih.gov/pubmed/26710314
http://dx.doi.org/10.1371/journal.pone.0144307
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author Laming, Sven R.
Szafranski, Kamil M.
Rodrigues, Clara F.
Gaudron, Sylvie M.
Cunha, Marina R.
Hilário, Ana
Le Bris, Nadine
Duperron, Sébastien
author_facet Laming, Sven R.
Szafranski, Kamil M.
Rodrigues, Clara F.
Gaudron, Sylvie M.
Cunha, Marina R.
Hilário, Ana
Le Bris, Nadine
Duperron, Sébastien
author_sort Laming, Sven R.
collection PubMed
description The Mediterranean Sea and adjoining East Atlantic Ocean host a diverse array of small-sized mussels that predominantly live on sunken, decomposing organic remains. At least two of these, Idas modiolaeformis and Idas simpsoni, are known to engage in gill-associated symbioses; however, the composition, diversity and variability of these symbioses with changing habitat and location is poorly defined. The current study presents bacterial symbiont assemblage data, derived from 454 pyrosequencing carried out on replicate specimens of these two host species, collected across seven sample sites found in three oceanographic regions in the Mediterranean and East Atlantic. The presence of several bacterial OTUs in both the Mediterranean Sea and eastern Atlantic suggests that similar symbiont candidates occur on both sides of the Strait of Gibraltar. The results reveal markedly different symbiotic modes in the two species. Idas modiolaeformis displays high symbiont diversity and flexibility, with strong variation in symbiont composition from the East Mediterranean to the East Atlantic. Idas simpsoni displays low symbiont diversity but high symbiont fidelity, with a single dominant OTU occurring in all specimens analysed. These differences are argued to be a function of the host species, where subtle differences in host evolution, life-history and behaviour could partially explain the observed patterns. The variability in symbiont compositions, particularly in Idas modiolaeformis, is thought to be a function of the nature, context and location of the habitat from which symbiont candidates are sourced.
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spelling pubmed-46924362016-01-12 Fickle or Faithful: The Roles of Host and Environmental Context in Determining Symbiont Composition in Two Bathymodioline Mussels Laming, Sven R. Szafranski, Kamil M. Rodrigues, Clara F. Gaudron, Sylvie M. Cunha, Marina R. Hilário, Ana Le Bris, Nadine Duperron, Sébastien PLoS One Research Article The Mediterranean Sea and adjoining East Atlantic Ocean host a diverse array of small-sized mussels that predominantly live on sunken, decomposing organic remains. At least two of these, Idas modiolaeformis and Idas simpsoni, are known to engage in gill-associated symbioses; however, the composition, diversity and variability of these symbioses with changing habitat and location is poorly defined. The current study presents bacterial symbiont assemblage data, derived from 454 pyrosequencing carried out on replicate specimens of these two host species, collected across seven sample sites found in three oceanographic regions in the Mediterranean and East Atlantic. The presence of several bacterial OTUs in both the Mediterranean Sea and eastern Atlantic suggests that similar symbiont candidates occur on both sides of the Strait of Gibraltar. The results reveal markedly different symbiotic modes in the two species. Idas modiolaeformis displays high symbiont diversity and flexibility, with strong variation in symbiont composition from the East Mediterranean to the East Atlantic. Idas simpsoni displays low symbiont diversity but high symbiont fidelity, with a single dominant OTU occurring in all specimens analysed. These differences are argued to be a function of the host species, where subtle differences in host evolution, life-history and behaviour could partially explain the observed patterns. The variability in symbiont compositions, particularly in Idas modiolaeformis, is thought to be a function of the nature, context and location of the habitat from which symbiont candidates are sourced. Public Library of Science 2015-12-28 /pmc/articles/PMC4692436/ /pubmed/26710314 http://dx.doi.org/10.1371/journal.pone.0144307 Text en © 2015 Laming et al http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.
spellingShingle Research Article
Laming, Sven R.
Szafranski, Kamil M.
Rodrigues, Clara F.
Gaudron, Sylvie M.
Cunha, Marina R.
Hilário, Ana
Le Bris, Nadine
Duperron, Sébastien
Fickle or Faithful: The Roles of Host and Environmental Context in Determining Symbiont Composition in Two Bathymodioline Mussels
title Fickle or Faithful: The Roles of Host and Environmental Context in Determining Symbiont Composition in Two Bathymodioline Mussels
title_full Fickle or Faithful: The Roles of Host and Environmental Context in Determining Symbiont Composition in Two Bathymodioline Mussels
title_fullStr Fickle or Faithful: The Roles of Host and Environmental Context in Determining Symbiont Composition in Two Bathymodioline Mussels
title_full_unstemmed Fickle or Faithful: The Roles of Host and Environmental Context in Determining Symbiont Composition in Two Bathymodioline Mussels
title_short Fickle or Faithful: The Roles of Host and Environmental Context in Determining Symbiont Composition in Two Bathymodioline Mussels
title_sort fickle or faithful: the roles of host and environmental context in determining symbiont composition in two bathymodioline mussels
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4692436/
https://www.ncbi.nlm.nih.gov/pubmed/26710314
http://dx.doi.org/10.1371/journal.pone.0144307
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