US STOCKS-Wall St opens higher as oil prices boost energy shares
* World stocks also higher on earnings, Greek talks, Japan
* Allergan rises after profit beats expectations
* Gap drops after sales fall for fifth straight quarter
* Indexes up: Dow 0.66 pct, S&P 0.52 pct, Nasdaq 0.33 pct (Updates to open)
By Tanya Agrawal
May 10 (Reuters) - Wall Street opened higher on Tuesday, tracking global equities, as investors' appetite for risk increased and as oil prices rose, boosting energy shares.
Oil was up about 1.5 percent, driven by supply disruptions in Canada and elsewhere that have knocked out 2.5 million barrels of daily production and overshadowed fears of oversupply.
World stock markets also rose, helped by solid corporate earnings in Europe, progress on Greek debt talks, and a new pledge by Japan that it was prepared to weaken its currency.
The S&P 500, which has risen about 15 percent since its February lows, has slowed its rally in the last two weeks due to underwhelming quarterly earnings and mixed U.S. economic data. Continuación...