Mauritania Football Federation has taken a decision to entrust the national team to Amir Abdou who resigned from his post as head coach of Comoros a week ago.
The decision was take by the Mauritania Football Federation (FFRIM) at a meeting on Wednesday.
Frenchman Da Rosa, who only took over as coach of Mauritania in November, was in charge as the Mourabitounes lost all three of their group games at the 2021 Africa Cup of Nations in Cameroon.
The north-west Africans lost against The Gambia, Tunisia and Mali and failed to score a goal at the tournament.
Amir Abdou spent eight years in charge of Comoros and led the Indian Ocean islanders to their first ever Nations Cup finals in Cameroon.
The Coelacanths narrowly lost 2-1 to the hosts in the last 16 after recording a shock win over Ghana in the group stage.
His main task will be to lead Mauritania to a lead third successive Nations Cup finals in Ivory Coast next year when the qualifying campaign begins later this year.
