Sept 13 (Reuters) -
* The Toronto Stock Exchange's S&P/TSX .GSPTSE fell 47.31 points, or 0.29 percent, to 16,001.71.
* Lagging shares were Dollarama Inc DOL.TO , down 17.2 percent, Aphria Inc APH.TO , down 16.9 percent, and Canopy Growth Corp WEED.TO , lower by 13.6 percent.
* Leading percentage gainers were ATS Automation Tooling Systems Inc ATA.TO , up 6.8 percent, Lucara Diamond Corp LUC.TO , up 6.4 percent, and Tourmaline Oil Corp TOU.TO , higher by 4.6 percent.
* On the TSX 97 issues advanced and 136 declined as a 0.7-to-1 ratio favored decliners. There were 6 new highs and 9 new lows, with total volume of 221.6 million shares.
* The most heavily traded shares by volume were Aurora Cannabis Inc ACB.TO , Aphria Inc APH.TO and Canopy Growth Corp WEED.TO .
* The TSX's energy group .SPTTEN fell 0.52 points, or 0.28 percent, while the financials sector .SPTTFS climbed 0.18 points, or 0.06 percent.
* West Texas Intermediate crude futures CLc1 fell 2.25 percent, or $1.57, to $68.79 a barrel. Brent crude LCOc1 fell 1.76 percent, or $1.4, to $78.34 O/R
* The TSX is off 1.3 percent for the year.