Shares in Totenko Co., a Tokyo-based operator of a Chinese restaurant, jumped after nearby Ueno Zoo announced its giant pandas had mated, fueling hopes that the first baby panda at the zoo in more than four years would boost tourism in the area. Public viewing of the two pandas, Shin Shin and Ri Ri, was halted last week in preparation for the mating session, according to a statement from Ueno Zoological Gardens.