Adolescent methylmercury exposure alters short-term remembering, but not sustained attention, in male Long-Evans rats.

•Gestational methylmercury is neurotoxic but its impact on the adolescent brain has been explored only recently.•Adolescent exposure affects delay discounting, perseveration, and sensitivity to drugs that affect dopamine activity.•Attention deficits were not noted in rats exposed to methylmercury during adolescence.•Exposed rats showed a subtle improvement in short-term remembering, consistent with other reports involving developmental.