{"refrec":{"BRefID":252604,"RR":"<b>Riou, V.; Halary, S.; Duperron, S.; Bouillon, S.; Elskens, M.; Bettencourt, R.; Santos, R.S.; Dehairs, F.; Colaço, A.</b> (2008). Influence of CH<sub>4</sub> and H<sub>2</sub>S availability on symbiont distribution, carbon assimilation and transfer in the dual symbiotic vent mussel <i>Bathymodiolus azoricus</i>. <i>Biogeosciences 5(6)</i>: 1681-1691. <a href=\"http://dx.doi.org/10.5194/bg-5-1681-2008\" target=\"_blank\">http://dx.doi.org/10.5194/bg-5-1681-2008</a>","BEntID":244299,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>Biogeosciences 5(6)</i>: 1681-1691. <a href=\"http://dx.doi.org/10.5194/bg-5-1681-2008\" target=\"_blank\">http://dx.doi.org/10.5194/bg-5-1681-2008</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Riou, V.; Halary, S.; Duperron, S.; Bouillon, S.; Elskens, M.; Bettencourt, R.; Santos, R.S.; Dehairs, F.; Colaço, A.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Riou, V. <i>et al.</i>","Englishabstract":"High densities of mussels of the genus <i>Bathymodiolus</i> are present at hydrothermal vents of the Mid-Atlantic Ridge. It was previously proposed that the chemistry at vent sites would affect their sulphide- and methane-oxidizing endosymbionts' abundance. In this study, we confirmed the latter assumption using fluorescence in situ hybridization on <i>Bathymodiolus azoricus</i> specimens maintained in a controlled laboratory environment at atmospheric pressure with one, both or none of the chemical substrates. A high level of symbiosis plasticity was observed, methane-oxidizers occupying between 4 and 39% of total bacterial area and both symbionts developing according to the presence or absence of their substrates. Using H<sup>13</sup>CO<sub>3</sub><sup>-</sup> in the presence of sulphide, or <sup>13</sup>CH<sub>4</sub>, we monitored carbon assimilation by the endosymbionts and its translocation to symbiont-free mussel tissues. Carbon was incorporated from methane and sulphide-oxidized inorganic carbon at rates 3 to 10 times slower in the host muscle tissue than in the symbiont-containing gill tissue. Both symbionts thus contribute actively to <i>B. azoricus</i> nutrition and adapt to the availability of their substrates. Further experiments with varying substrate concentrations using the same set-up should provide useful tools to study and even model the effects of changes in hydrothermal fluids on <i>B. azoricus</i>' chemosynthetic nutrition.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Influence of CH<sub>4</sub> and H<sub>2</sub>S availability on symbiont distribution, carbon assimilation and transfer in the dual symbiotic vent mussel <i>Bathymodiolus azoricus</i>","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2024-12-10 01:33:17.368041","timezone_type":1,"timezone":"+01:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":2008,"MonPub":null,"DateUpdate":"2016-06-12","DateCreate":"2016-02-02","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000262411100017","VABBcode":null,"OpenAcc":1,"DOI":"10.5194/bg-5-1681-2008"},"refs":null,"anarec":{"AnaID":252604,"PubliDate":2008,"Pagination":"1681-1691","XtraPublOfAnaID":null,"ISBN":null,"Volume":"5","Issue":"6","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":68092,"SerRR":"<b>Gattuso, J.P.; Kesselmeier, J. (Ed.)</b> Biogeosciences. Copernicus Publications: Göttingen.  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