Dec 6 (Reuters) -
* The Toronto Stock Exchange's S&P/TSX .GSPTSE fell 245.64 points, or 1.62 percent, to 14,937.00.
* Lagging shares were Dollarama Inc DOL.TO , down 11.8 percent, Canada Goose Holdings Inc GOOS.TO , down 8.5 percent, and Cenovus Energy Inc CVE.TO , lower by 7.7 percent.
* Leading the index were Aphria Inc APHA.TO , up 51.0 percent, Aurora Cannabis Inc ACB.TO , up 13.5 percent, and Canopy Growth Corp WEED.TO , higher by 7.6 percent.
* On the TSX 81 issues rose and 161 fell as a 0.5-to-1 ratio favored decliners. There were two new highs and 50 new lows, with total volume of 358.4 million shares.
* The most heavily traded shares by volume were Aphria Inc APHA.TO , Aurora Cannabis Inc ACB.TO and Bombardier Inc BBDb.TO .
* The TSX's energy group .SPTTEN fell 8.37 points, or 5.40 percent, while the financials sector .SPTTFS slipped 4.92 points, or 1.71 percent.
* West Texas Intermediate crude futures CLc1 fell 2.31 percent, or $1.22, to $51.67 a barrel. Brent crude LCOc1 fell 2.16 percent, or $1.33, to $60.23 O/R
* The TSX is off 7.8 percent for the year.