Tokyo stocks retreated Monday as a spike in the yen against the U.S. dollar following lackluster export data released here, made for a dour market mood.

The 225-issue Nikkei Stock Average lost 81.75 points, or 0.49 percent, from Friday to close the day at 16,654.60.

The broader Topix index of all First Section issues on the Tokyo Stock Exchange, meanwhile, lost 4.72 points, or 0.35 percent, to finish at 1,338.68.

Notable decliners at the closing bell comprised mining, electric power and gas, as well as fishery, agriculture and forestry-linked stocks.

The day's turnover was 1,709.2 billion yen (15.51 billion U.S. dollars).