The double podium achieved by Ducati in the opening MotoGP round will see its fuel allowance trimmed from 24 to 22 litres for the remainder of the season.
MotoGP Race Direction has notified the Italian manufacturer that the concession of a 24 litre fuel tank capacity will be removed, effective immediately.
Under the rules that advantage is reduced by 50 percent if a race win, two second places or three podiums are achieved in dry conditions.
Ducati had also achieved a podium finish with Dovizioso at the Circuit of the Americas last year.
A Race Direction statement reads: “Following the Ducati Team's results at the Commercial Bank Grand Prix of Qatar last weekend, at which Andrea Dovizioso and Andrea Iannone were both on the podium, its fuel allowance has been reduced from 24 to 22 litres.
“MotoGP Race Direction has officially notified the Ducati Team regarding the regulations affecting its MotoGP Factory Option entries, which under Article 220.127.116.11.5 of the FIM Road racing World Championship Grand Prix Regulations means that the concession of a 24 litre fuel tank capacity will be removed effective immediately.
“This is due to the fact that Ducati Factory option machines have now achieved three podiums in dry conditions since the start of the 2014 season: Dovizioso's 3rd place in Austin 2014, his 2nd place in Qatar 2015 and his teammate Iannone's 3rd place in the same race.
“From the Red Bull Grand Prix of the Americas until the end of the 2015 season, the fuel tank capacity for all Ducati Factory option machines will be a maximum of 22 litres.
“This applies to Ducati machines entered under the Factory Option, which include Ducati Team's Dovizioso and Iannone, as well as Pramac Racing Team's Danilo Petrucci and Yonny Hernandez.
“The Avintia Racing Open entries of Hector Barbera and Mike Di Meglio are not affected.”