Rif­tia pachyp­tila lives on the ocean floor near hy­drother­mal vents on the East Pa­cific Rise, more than a mile under the sea (Cary et al.

Although the symbiont has been studied in detail on the molecular level, such analyses were unavailable for … These worms live in white, chitinous tubes, with their plumes extended into the zone of turbulent mixing of warm (∼20°C), sulfide-rich, hydrothermal fluid and cold (2°C), oxygenated sea water. CO(2) is transported from the surrounding water to the bacteriocytes located in the trophosome, through the branchial plume and the body fluids.

The giant tubeworm Riftia pachyptila lives in symbiosis with the chemoautotrophic gammaproteobacterium Cand. Previous studies have demonstrated th … The deep-sea tubeworm Riftia pachyptila lacks a digestive system but completely relies on bacterial endosymbionts for nutrition. Ge­o­graphic Range. Giant, red-plumed, vestimentiferan tubeworms (Riftia pachyptila; Figure 2) so far provide the ultimate in host accommodation of endosymbiotic bacteria. 1989… The symbiotic tubeworm Riftia pachyptila needs to fuel its chemoautotrophic symbiotic bacteria with inorganic carbon.