Tokyo, March 12 (BridgeNews) - Japanese shares ended the morning session sharply lower as Friday's weak performance on Wall Street dampened issues across the board. The government's emergency economic stimulus package unveiled Friday and slightly stronger-than-expected GDP data released early Monday also failed to evoke a positive response. The Nikkei fell 378.45 points, or 3.0%, to 12249.45, after temporarily recording a 400-point decline.