Dietary carbon sources of mussels and tubeworms from Galápagos hydrothermal vents determined from tissue 14 C activity
作者： P. M. Williams , K. L. Smith , E. M. Druffel , T. W. Linick
DOI: 10.1038/292448A0
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摘要: The large quantities of reduced carbon that are required to support the filter-feeding mytilid mussels (Mytilus sp.), vesi-comyid clams (Calyptogena sp.) and various other animals in Galapagos hydrothermal vent systems thought be derived from either situ synthesis particulate organic matter by chemoautotrophic, sulphide-oxidizing bacteria1,2 or advection sedimentary into environment surrounding areas3,4. In contrast, dense populations vestimentiferan tubeworms (Riftia pachyptila), which lack mouth organs digestive tracts, apparently utilize synthesized symbiotic chemoautotrophs5. We present evidence here, based on 14C activities 13C/12C ratios, principal source dietary for is dissolved inorganic (DIOC) effluent waters.
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