Biology 2601A/B Lecture Notes - Pokey, Antifreeze Protein, Cooling Bath
Document Summary
Ectotherms- body of the stone fly is about 0 degrees. Just because we don"t see things out in the wild doesn"t mean theyre not there. Endotherms defending the temp they think is optimal, ectotherms allowing their body to change with the environment. Turn the low temp problem into an energy problem. A lot just take the brunt force of temperature. Extracellular fluid and tissues freeze, then they thaw out and theyre fine. Insects tend to be small so avoding freezing is a popular tactic. Ice cant form unless it can make this lattice structure. In an orgamism it isn"t just water, theres other stuff which impedes the lattice. Chill susceptible- suck at surviving cold (majority) will migrate, avoid cold. Freeze avoiding- keep themselves from freezing small insects, ice wont form inside their bodies. How do we know an insect has frozen.
