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Dual symbiosis in a Bathymodiolus sp mussel from a methane seep on the gabon continental margin (southeast Atlantic): 16S rRNA phylogeny and distribution of the symbionts in gills ArchiMer
Duperron, Sebastien; Nadalig, Thierry; Caprais, Jean-claude; Sibuet, Myriam; Fiala Medioni, Aline; Amann, Rudolf; Dubilier, Nicole.
Deep-sea mussels of the genus Bathymodiolus (Bivalvia: Mytilidae) harbor symbiotic bacteria in their gills and are among the dominant invertebrate species at cold seeps and hydrothermal vents. An undescribed Bathymodiolus species was collected at a depth of 3,150 m in a newly discovered cold seep area on the southeast Atlantic margin, close to the Zaire channel. Transmission electron microscopy, comparative 16S rRNA analysis, and fluorescence in situ hybridization indicated that this Bathymodiolus sp. lives in a dual symbiosis with sulfide- and methane-oxidizing bacteria. A distinct distribution pattern of the symbiotic bacteria in the gill epithelium was observed, with the thiotrophic symbiont dominating the apical region and the methanotrophic symbiont...
Tipo: Text Palavras-chave: Gabon; Southeast Atlantic; Methane seep; Hydrothermal vent; Deep sea; RRNA analysis; Methane concentration; Gill epithelium; Symbiosis; Bacteria; Mytilidae.
Ano: 2005 URL: http://archimer.ifremer.fr/doc/2005/publication-1266.pdf
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Evidence for chemoautotrophic symbiosis in a Mediterranean cold seep clam (Bivalvia : Lucinidae): comparative sequence analysis of bacterial 16S rRNA, APS reductase and RubisCO genes ArchiMer
Duperron, Sebastien; Fiala Medioni, Aline; Caprais, Jean-claude; Olu, Karine; Sibuet, Myriam.
Symbioses between lucinid clams (Bivalvia: Lucinidae) and autotrophic sulphide-oxidizing bacteria have mainly been studied in shallow coastal species, and information regarding deep-sea species is scarce. Here we study the symbiosis of a clam, resembling Lucinoma kazani, which was recently collected in sediment cores from new cold-seep sites in the vicinity of the Nile deep-sea fan, eastern Mediterranean, at depths ranging from 507 to 1691 m. A dominant bacterial phylotype, related to the sulphide-oxidizing symbiont of Lucinoma aequizonata, was identified in gill tissue by comparative 16S rRNA gene sequence analysis. A second phylotype, related to spirochete sequences, was identified twice in a library of 94 clones. Comparative analyses of gene sequences...
Tipo: Text Palavras-chave: Eastern Mediterranean; Cold seeps; Lucinoma; Lucinidae; Sulphide oxidizing bacteria; Symbiosis.
Ano: 2007 URL: http://archimer.ifremer.fr/doc/2007/publication-2176.pdf
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New information on the ecology of deep-sea vent communities in the azores triple junction area : preliminery results of the Diva 2 cruise (May 31-July 4, 1994) ArchiMer
Desbruyeres, Daniel; Alayse, Anne-marie; Antoine, Elisabeth; Barbier, Georges; Barriga, Fjas; Biscoito, Manuel; Briand, Patrick; Brulport, Jean-pierre; Comtet, Thierry; Cornec, Laurence; Crassous, Philippe; Dando, Paul; Fabri, Marie-claire; Felbeck, Horst; Lallier, Francois; Fiala Medioni, Aline; Goncalves, Joao; Menard, Frederic; Kerdoncuff, Jacques; Patching, John; Saldanha, Luis; Sarradin, Pierre-marie.
Tipo: Text
Ano: 1994 URL: http://archimer.ifremer.fr/doc/00179/29005/27432.pdf
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