The Sensex fell by over 58 points, or 0.34 per cent, in opening trade today on continued sell-off by funds and investors amid a weak trend on the other Asian bourses. The 30-share Sensex, which had gained 45 points in Monday's choppy trade, shed 58 points to 16,179 points, in opening trade as stocks of oil and gas, metals, auto and consumer durable took a dive. The wide-based National Stock Exchange index Nifty also drifted by 23 points to 4,833 points. Brokers said profit-taking by participants and weak trend on the other Asian markets dampened trading sentiments.