The Aerobic and Anaerobic Metabolism of the Common Cockroach (Periplaneta orientalis). II

Abstract

Following a period of anaerobiosis in the cockroach there is a greater O intake and a smaller CO2 output than during the preliminary basal period. The R. Q. was as low as 0.60 in one experiment. CO2 retention during the recovery period is calculated on the assumption that the excess O is used for the combustion of lactic acid and that the lactic acid is replaced by carbonic acid. It is concluded that O debt and CO2 retention are related through the removal of lactic acid.