Gueye Abdoullah and Diakite Ismaila scored Mauritania’s goal in the 27th and 48th minutes of the game.
The second friendly is expected to take place on 2 March 2013 at the same venue.
Both countries are using the matches to prepare for the upcoming World Cup qualifiers, CHAN, and other CAF competitions.
The Scorpions are expected to play Ivory Coast in March in the FIFA qualifiers.
Italian tactician coach Mancini invited 24 local-based players at the FIFA Goal Project in Yundum.
Three professional players - Dawda Bah, Tijan Jaiteh and Abdou Jammeh, who are currently in the country, took part in the friendly.
Dawda Bah, who captained the local-based players, played 64 minutes, while Tijan Jaiteh, who was vice captain of the day, and Abdou Jammeh played the whole game.
