Freeze tolerance in the frog, Rana sylvatica
Wood frogs survive extracellular freezing at moderate subzero temperatures (-4°C) for at least 11 days. Freezing survival is aided by the accumulation of high concentrations of glucose as a cryoprotectant in blood and tissues. Glucose production was accompanied by a rapid decline in liver, but not muscle, glycogen levels suggesting that liver is the organ controlling cryoprotectant synthesis.
|Keywords||cryoprotectant synthesis, frog, freeze tolerance, glucose levels, cryoprotectant, glycogen levels, liver, Rana sylvatica|
Storey, K. (1984). Freeze tolerance in the frog, Rana sylvatica. Experientia, 40(11), 1261–1262. doi:10.1007/BF01946664