Valve gape activity of cultured Gigantidas childresse: individual data

Valve gape activity of cultured G. childressi mussels from different nutritional treatments (CH4: 'M', algae + CH4: 'MA', algae: 'A') in response to mean steps (including both, step-wise increasing and decreasing methane levels) of seawater CH4 concentrations based on time lapse image analysis.