Thermogenesisof Artemia in post-dormant development

Isothermal microcalorimeter was modified to measure slow and weak thermal dissipation for developmental and evolutionary biology. The calorimeter can detect the continuous thermal dissipation of the ampoule at P=20 nW and fast thermal events with E=0.1 μJ. Baseline was stabilized to be ±10 nWover a week. By using this calorimeter, post-dormant development of a single larva of Artemia franciscana (Great Salt Lake) was measured as a function of incubation time at T=293.17 K. Characteristic thermogenesis was observed at emergence, hatching and growth. The energy of yolk in a cyst was evaluated to be 38 mJ in average on the basis of the total thermogenesis of a larva.