FN Archimer Export Format
PT J
TI Sulfide-Driven Autotrophic Balance in the Bacterial Symbiont-Containing Hydrothermal Vent Tubeworm, Riftia pachyptila Jones
BT 
AF CHILDRESS, JJ
   FISHER, CR
   FAVUZZI, JA
   KOCHEVAR, RE
   SANDERS, NK
   ALAYSE, Anne-Marie
AS 1:1;2:2;3:1;4:1;5:3;6:4;
FF 1:;2:;3:;4:;5:;6:;
C1 UNIV CALIF SANTA BARBARA, INST MARINE SCI, SANTA BARBARA, CA 93106 USA.
   PENN STATE UNIV, DEPT BIOL SCI, UNIVERSITY PK, PA 16802 USA.
   BAMFIELD MARINE STN, BAMFIELD V0R 1B0, BC, CANADA.
   IFREMER, DEPT ENVIRONM PROFOND, F-29263 PLOUZANE, FRANCE.
C2 UNIV CALIF SANTA BARBARA, USA
   UNIV PENN STATE, USA
   BMSC, CANADA
   IFREMER, FRANCE
SI BREST
IN WOS Ifremer jusqu'en 2018
IF 0.895
TC 90
UR https://archimer.ifremer.fr/doc/00178/28970/27392.pdf
LA English
DT Article
AB Hydrothermal vent tubeworms, Riftia pachyptila Jones, were maintained alive and studied on board ship using flow-through pressure aquaria. Simultaneous measurements of O2, SIGMA-CO2, SIGMA-H2S fluxes showed that the intact symbioses reach maximum rates of uptake of SIGMA-CO2 (>2 mu-mole g-1 h-1) at about 90 mu-M SIGMA-H2S. Measurements were made of hemolymph and coelomic fluid SIGMA-CO2, SIGMA-H2S, thiosulfate, pH, and hemoglobin concentrations in worms kept under various conditions of O2 and SIGMA-H2S. Normal hemolymph pH appears to be about 7.5 and is not affected by SIGMA-H2S and SIGMA-CO2 concentrations within the ranges observed. We conclude that Riftia is specialized to provide sulfide to its symbionts with minimal interaction of sulfide with the animal metabolism. The uptake of sulfide is apparently by diffusion into the hemolymph, facilitated by the sulfide-binding properties of the hemoglobins. Both SIGMA-CO2 and P(CO2) are elevated in the hemolymph above their levels in the medium, although they are reduced under autotrophic conditions. Thus inorganic carbon is apparently concentrated from the medium into the hemolymph by an unknown mechanism.
PY 1991
PD FEB
SO Biological Bulletin
SN 0006-3185
PU Marine Biological Laboratory
VL 180
IS 1
UT A1991EX06500014
BP 135
EP 153
DI 10.2307/1542437
ID 28970
ER

EF