TABLE 3.
Incubation conditions for R. pachyptila maintained in the high-pressure respirometry system
| Treatmenta | H2 (μM) | ΣH2Sb (μM) | O2 (μM) | nc | Total biomass (g) | Biomass range (g) | Duration (h) |
|---|---|---|---|---|---|---|---|
| H2 + high O2 | 114 ± 5 | 0 | 272 ± 42 | 5 (0) | 177 | 31–65 | 64 |
| H2 + low O2 | 113 ± 12 | 0 | 31 ± 5 | 5 (1) | 222 | 29–40 | 64 |
| ΣH2S + high O2 | 0 | 148 ± 33 | 291 ± 11 | 6 (0) | 48.14 | 2.4–16 | 52 |
| ΣH2S + low O2 | 0 | 159 ± 34 | 32 ± 8 | 4 (1) | 66.7 | 6.0–33.7 | 52 |
a
Dissolved gas concentrations are the averages of measurements taken from the equilibration columns every 4 h ± standard deviations.
b
ΣH2S = [H2S] + [HS−] + [S2−].
c
The number of R. pachyptila worms placed in the aquarium is followed in parentheses by the number that expired during the experiment.