Effects of chronic exposure to dispersed oil on selected reproductive processes in adult blue mussels (Mytilus edulis) and the consequences for the early life stages of their larvae

► Adults Mytilus edulis were exposed to oil-water dispersion during gametogenesis. ► Reproductive endpoints in 0.25 mg/l exposed females were affected after 1 month. ► Parental exposure to 0.25 mg oil/l caused growth and development impairment. ► These effects were more severe in larval stages maintained at 0.25 mg oil/l. ► Combining adult reproductive endpoints to larval development should be recommended.