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Table 1 Main concentrations in the Menez Gwen, Lucky Strike and Rainbow vent fluids, adapted from Douville et al. (2002), Charlou et al. (2000, 2002).

From: Conjugating effects of symbionts and environmental factors on gene expression in deep-sea hydrothermal vent mussels

  Menez Gwen (37°50'N) Lucky Strike (37°17'N) Rainbow (36°14'N)
Physical and chemical characteristics
Depth (m) 850 1700 2300
Temperature (°C) 265-284 152-333 360-365
pH 4.2-4.8 3.5-4.9 2.8-3.1
Fe (mg l-1) 1.3-1.6 1.7-48 1339
Mn (mg l-1) 3.2-3.7 4.2-24.7 123
Cu (mg l-1) 40-180 60-1650 8900
Zn (mg l-1) 0.16-0.33 0.33-3.79 10.5
Cd (mg l-1) 1.01-1.34 2.02-8.85 14.6
Pb (mg l-1) 4.4-11.6 7.2-26.9 30.6
H 2 S (mM) 1.3-1.82 0.6-3.3 1-2.52
CH 4 (mM) 1.7 0.52 2.5
Symbiont quantification
n 25 30 25
SOX 272.95 ± 73.45 166.71 ± 28.92 119.35 ± 32.05
MOX 25.70 ± 6.70 16.38 ± 4.07 209.19 ± 184.40
ATP sulfurylase 1.1 10-5 ± 4.8 10-6 8 10-6 ± 3 10-6 4.6 10-6 ± 1.3 10-6
pmoA 0.12 ± 0.04 0.07 ± 0.02 0.29 ± 0.09
  1. Relative quantities and activity of sulfide oxidizer bacteria (SOX and ATP sulfurylase) and methanotrophic bacteria (MOX and particulate methane monooxygenase A pmoA) were characterized in the present study and given in an arbitrary unit.