Changes in lipid content and fatty acid composition along the reproductive cycle of the freshwater mussel Dreissena polymorpha: Its modulation by clofibrate exposure

► Clofibrate exposure leads to a reduction of total triglycerides in zebra mussel. ► The amount of fatty acids per gram wet weight increased in exposed mussels. ► The effects were evidenced at concentrations of clofibrate as low as 200 ng/L. ► Fatty acid profiles were closely related to reproductive events.