Clothing maker Tropical Sportswear International Corp posted a rise in first-quarter net income rose as a result of a 12 per cent surge in sales. It said net income was $3.0 million, or 38 cents per diluted share, compared with $2.7 million, or 35 cents per diluted share in the same period of the previous year. Net sales for the first quarter ended December 29, 2001 increased 12 per cent to $110.0 million compared with $98.6 million in the same period last year.