@article {3705,
	title = {A complex picture of associations between two host mussels and symbiotic bacteria in the Northeast Atlantic.},
	journal = {Naturwissenschaften},
	volume = {100},
	year = {2013},
	month = {2013 Jan},
	pages = {21-31},
	abstract = {<p>Among chemosymbiotic metazoans found at deep-sea hydrothermal vents, cold seeps and organic falls, members of the mussel clade Bathymodiolinae (Bivalvia: Mytilidae) have evolved interactions with a higher diversity of bacterial lineages than other bivalve groups. Here, we characterized the bacteria associated with "Bathymodiolus" mauritanicus and Idas-like specimens from three sites in the Northeast Atlantic (two mud volcanoes in the Gulf of Cadiz and one seamount of the Gorringe Bank). Phylogenetic analysis of bacterial 16S rRNA-encoding gene sequences demonstrated that "B". mauritanicus has a dual symbiosis dominated by two phylotypes of methane-oxidising bacteria and a less abundant phylotype of a sulphur-oxidising bacterium. The latter was the dominant phylotype in a sympatric population of Idas-like mussels at the Darwin mud volcano. These results are the first report of a bacterial phylotype shared between two deep-sea mussels from divergent clades. This sulphur-oxidising bacterium was absent from Idas-like specimens from the other two sites (Gorringe Bank and Mekn{\`e}s mud volcano), in which bacterial clone libraries were dominated by other Gammaproteobacteria related to symbionts previously identified in Idas modiolaeformis from the Eastern Mediterranean. All Idas-like specimens studied herein are closely related and also related to I. modiolaeformis. However, they probably display different associations with bacteria, with the possible absence of both methane- and sulphur-oxidising symbionts at the Gorringe Bank. These results draw a very complex picture of associations between mussels and bacteria in the Northeast Atlantic, which could be highly variable depending on locale characteristics of the habitats.</p>
},
	keywords = {Animals, Atlantic Ocean, bacteria, Bacterial Physiological Phenomena, Biodiversity, Bivalvia, Electron Transport Complex IV, Genes, Bacterial, Phylogeny, RNA, Ribosomal, 16S, Symbiosis},
	issn = {1432-1904},
	doi = {10.1007/s00114-012-0985-2},
	author = {Rodrigues, Clara F and Cunha, Marina R and G{\'e}nio, Luciana and S{\'e}bastien Duperron}
}
