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Jan 29 (Reuters) - Canada's main stock index fell on Monday, touching a six-week low as energy and other resource shares tumbled alongside commodity prices.
* The Toronto Stock Exchange's S&P/TSX composite index ended down 144.5 points, or 0.89 percent, at 16,094.72.
* The index hit a session low of 16,090.66, its weakest intra-day level since Dec. 15. All but one of the index's 10 main sectors were in negative territory.
* The energy group retreated 1.8 percent as U.S. crude prices settled down 58 cents at $65.56 a barrel, driven lower by a stronger U.S. dollar and rising crude output. * Enbridge Inc was the biggest drag on the index, down 1.5 percent at C$46.35, followed by Suncor Energy , which declined 1.5 percent to C$45.53.
* The firmer greenback also weighed on gold prices, sending gold producers in Toronto down 3 percent. Barrick Gold fell 2.9 percent to C$17.68. * Cannabis company Aphria Inc fell 5.8 percent to C$18.99 after it said it would buy rival Nuuvera Inc for C$826 million ($670 million). Nuuvera jumped 10.4 percent to C$7.73. * Shares of cannabis companies generally came under pressure following last week's deal between Aurora Cannabis Inc and CanniMed Therapeutics Inc , which would create the world's top marijuana producer by market value. Canopy Growth was down 5.7 percent at C$33.10 * The TSX posted nine 52-week highs and three new lows. Across all Canadian issues, there were 73 new 52-week highs and 43 new lows.
* Among the most active Canadian stocks by volume, Bombardier was up 1.7 percent at C$3.60 after a U.S. trade commission on Friday backed the Canadian plane maker in a trade dispute with Boeing . * Volume on the TSX index was 200.16 million shares.
(Reporting by Leah Schnurr; Editing by Peter Cooney)
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