Retention of Carbon Dioxide during Entrance into Torpor in Dormice

摘要: Metabolic rate (MR), heart (HR) and body temperature (Tb) of two edible dormice (Glis glis) were studied during entrance into torpor at ranges, Ta= 0 to 5°C 15 20°C. MR was reduced rapidly from 275 84 ml O2*h-1 within the first hour after onset low range 154.5 82.2 Oz*h-1 high range. HR decrease paralleled reduction MR. Between 0-5°C decreased 388 171 BPM 284 193 in 15-20°C. After metabolic Tb one 36.9°C 30.8°C (cooling 6.1°C*h-1). At cooling 2.4°C*h-1 with a 37.2°C 34.8°C. A respiratory quotient (RQ) appeared closely correlated Ta below 5°C. The RQ 0.25 indicating retention CO2. In 20°C no could be observed entry torpor. even rose slightly 0.7 — 0.8 about 1.0. We suggest that depression metabolism activity is an active downregulation, but point out dependent relationship caused by fluids.