A dual symbiosis shared by two mussel species, Bathymodiolus azoricus and Bathymodiolus puteoserpentis (Bivalvia : Mytilidae), from hydrothermal vents along the northern Mid-Atlantic Ridge
|Author(s)||Duperron Sebastien1, 3, Bergin C1, Zielinski F1, Blazejak A1, Pernthaler A1, McKiness Z2, Dechaine E2, Cavanaugh C2, Dubilier Nicole1|
|Affiliation(s)||1 : Max Planck Inst Marine Microbiol, D-28359 Bremen, Germany.
2 : Harvard Univ, Dept Organism & Evolutionary Biol, Cambridge, MA 02138 USA.
3 : IFREMER, Ctr Brest, Dept Environm Profond, F-29263 Plouzane, France.
|Source||Environmental Microbiology (1462-2912) (Blackwell science), 2006-08 , Vol. 8 , N. 8 , P. 1441-1447|
|WOS© Times Cited||123|
|Keyword(s)||Bacteria, Phylogeny, Fluorescence in situ hybridization (FISH), Methane oxidizer, Sulfur oxidizer, 16S rRNA, Endosymbiosis|
|Abstract||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.|