July 10 (Reuters) - Canada's main stock index opened higher on Tuesday as gains in the world's second-biggest convenience store operator Alimentation Couche-Tard Inc ATDb.TO lifted consumer staples sector.
* At 9:34 a.m. ET (1334 GMT), the Toronto Stock Exchange's S&P/TSX Composite index .GSPTSE was up 42.73 points, or 0.26 percent, at 16,495.07.