Tokyo - Tokyo stocks opened lower Wednesday on credit concerns linked to the US subprime mortgage crisis.

The Nikkei 225 Stock Average edged down 73.39 points, or 0.58 per cent, in morning trading to 12,681.17.

The broader Topix index of all first-section issues was also down 11.19 points, or 0.89 per cent, at 1,241.93.

On currency markets at 9 am (0000 GMT), the dollar was quoted at 104.72-77 yen, down from Tuesday's 5 pm quote of 105.41-42 yen.

The euro was quoted at 1.5912-17 dollars, down from Tuesday's 5 pm quote of 1.5976-77 dollars, and at 166.70-75 yen, down from 168.41-45 yen. (dpa)