UPDATE 1-OPEC unlikely to decide on output hike - Ecuador

(Adds minister's comment, details and background)

QUITO, Nov 28 (Reuters) - Ecuador Oil Minister Galo Chiriboga told Reuters on Wednesday that it is unlikely OPEC will decide to raise oil production when the cartel's ministers meet in Abu Dhabi on Dec. 5.

"I don't think OPEC will make any decisions about raising or lowering production ... we are waiting for the market to adequately regulate the prices," Chiriboga said in a telephone interview.

The Organization of the Petroleum Exporting Countries is under mounting pressure from Western consumer nations to raise production again to halt oil prices from surging above $100 a barrel. Higher fuel prices could add strain to a vulnerable world economy.

Earlier this month, Ecuador became the 13th member of the producers' group, which already supplies over a third of the world's oil.

Ecuador, South America's No. 5 oil producer, has an output of around 500,000 barrels of oil per day. (Reporting by Alonso Soto; editing by Matthew Lewis)