The combined effects of oxygen availability and salinity on physiological responses and scope for growth in the green-lipped mussel Perna viridis

► The Green-lipped mussel was exposed to different combinations of DO and salinity for 4 weeks. ► CR, AE, RR and SFG decreased with decreasing salinity and DO. ► O:N ratio was <10 at salinities of 15 and 20, irrespective of DO levels. ► The results may help explain the distribution pattern of P. viridis in Hong Kong waters.