Fig 6. Growth rate index in oysters M. gigas in the presence of cadmium with (Cd + N) or without (Cd) cargo ship noise.

A, daily change of growth rate index. B, description by quartiles of the difference between growth index at day 14. The growth rate is smaller in presence of cargo ship noise. N = 13 oysters exposed to Cd and cargo ship noise and 12 oysters exposed to Cd alone.