The thermal constant, growth and survival of Artemia from Tuz Lake, Central Anatolia, were evaluated under laboratory conditions. Artemia nauplii (24-48 hours after hatching) were stocked into a 60 ppt salinity medium which contained Dunaliella and Oocystis. The Artemia were cul- tured at one of eight temperatures (2-degree intervals from 18° to 32°C) for 30 days, in two repli- cates. The animals grew faster but survival was lower as the temperature increased. Complete development from the nauplius stage to the adult stage required 30 days at 18°C, 20 days at 24°C and 15 days at 30°C. The thermal constant was 356±6 day-degrees and the developmen- tal zero value was 6.3±1.9°C.