A dual symbiosis shared by two mussel species, Bathymodiolus azoricus and Bathymodiolus puteoserpentis (Bivalvia: Mytilidae), from hydrothermal vents along the northern Mid-Atlantic Ridge

Summary Bathymodiolus azoricus and Bathymodiolus puteoserpentis are symbiont‐bearing mussels that dominate hydrothermal vent sites along the northern Mid‐Atlantic Ridge (MAR). Both species live in symbiosis with two physiologically and phylogenetically distinct Gammaproteobacteria: a sulfur‐oxidizin...

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Bibliographic Details
Published in:Environmental microbiology 2006-08, Vol.8 (8), p.1441-1447
Main Authors: Duperron, Sébastien, Bergin, Claudia, Zielinski, Frank, Blazejak, Anna, Pernthaler, Annelie, McKiness, Zoe P., DeChaine, Eric, Cavanaugh, Colleen M., Dubilier, Nicole
Format: Article
Language:English
Subjects:
Animals
Atlantic Ocean
Bathymodiolus azoricus
Bathymodiolus puteoserpentis
Bivalvia
Ecosystem
Gammaproteobacteria - genetics
Gammaproteobacteria - metabolism
Geologic Sediments - microbiology
Gills - microbiology
In Situ Hybridization, Fluorescence
Methane - metabolism
Molecular Probe Techniques
Mytilidae
Mytilidae - microbiology
Mytilidae - physiology
Phylogeny
RNA, Ribosomal, 16S - genetics
Seawater - microbiology
Species Specificity
Sulfides - metabolism
Symbiosis - genetics
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Summary:Summary Bathymodiolus azoricus and Bathymodiolus puteoserpentis are symbiont‐bearing mussels that dominate hydrothermal vent sites along the northern Mid‐Atlantic Ridge (MAR). Both species live in symbiosis with two physiologically and phylogenetically distinct Gammaproteobacteria: a sulfur‐oxidizing chemoautotroph and a methane‐oxidizer. A detailed analysis of mussels collected from four MAR vent sites (Menez Gwen, Lucky Strike, Rainbow, and Logatchev) using comparative 16S rRNA sequence analysis and fluorescence in situ hybridization (FISH) showed that the two mussel species share highly similar to identical symbiont phylotypes. FISH observations of symbiont distribution and relative abundances showed no obvious differences between the two host species. In contrast, distinct differences in relative symbiont abundances were observed between mussels from different sites, indicating that vent chemistry may influence the relative abundance of thiotrophs and methanotrophs in these dual symbioses.
ISSN:1462-2912
1462-2920
DOI:10.1111/j.1462-2920.2006.01038.x