@article {ISI:000299199000017,
	title = {{Response of hydrothermal vent vestimentiferan Riftia pachyptila to differences in habitat chemistry}},
	journal = {MARINE BIOLOGY},
	volume = {159},
	number = {2},
	year = {2012},
	month = {feb},
	pages = {435{\textendash}442},
	type = {Article},
	abstract = {Vestimentiferan tubeworms, which rely on intracellular sulfide-oxidizing autotrophic bacteria for organic carbon, flourish at deep-sea hydrothermal vents despite the erratic nature of their habitat. To assess the degree to which differences in habitat chemistry (sulfide, pH/CO(2)) might impact host and symbiont metabolic activity, Riftia pachyptila tubeworms were collected from habitats with low (H(2)S {\textless} 0.0001 mM) and high (up to 0.7 mM) sulfide concentrations. The elemental sulfur content of the symbiont-containing trophosome organ was lower in specimens collected from the low-sulfide site. Symbiont abundance, RubisCO activity, and trophosome carbon fixation rates were not significantly different for individuals collected from low- versus high-sulfide habitats. Carbonic anhydrase activities were higher in the anterior gas exchange organs of R. pachyptila from the low-sulfide habitat. Despite large differences in habitat chemistry, symbiont abundance and autotrophic potential were consistent, while the host appears to tailor carbonic anhydrase activity to environmental CO(2) availability.},
	keywords = {HOV Alvin (Human Occupied Vehicle)},
	issn = {0025-3162},
	doi = {10.1007/s00227-011-1821-5},
	author = {Scott, Kathleen M and Boller, Amanda J and Dobrinski, Kimberly P and Le Bris, Nadine}
}
