Brazil's Rousseff says Mantega would not serve in a second term

In a change of strategy to gain support, Rousseff has vowed that if she wins a second term she would replace some members of her economic team and alter policies in order to jumpstart an economy that fell into recession this year.

Mantega, Latin America's longest-serving finance minister, is considered one of Rousseff's biggest political liabilities as her rivals accuse the leftist leader of sinking the once-booming Brazilian economy.

Although Rousseff gained some ground last week, she still trails environmentalist Marina Silva in a likely second-round runoff vote, recent polls show.

In an interview with Estado de S.Paulo journalists, Rousseff said Mantega told her he will not stay on. She also said that if re-elected she would make changes in economic policies, but did not elaborate.

(Reporting by Alonso Soto and Anthony Boadle; editing by Andrew Hay)