Seasonal changes in the isotopic metabolic profile of Rana catesbeiana at 15°C

Treatment
[14C]LactateTissueSeasonCarbohydrateRESTREC 4
Specific activity*MuscleSummerLactate674±111424±127
WinterLactate2295±1611529±149
LiverSummerLactate1454±829434±43
WinterLactate488±843288±1903
d.p.m. g-1 tissueMuscleSummerGlucose2108±7121690±252
Glycogen8042±26264670±1100
WinterGlucose2345±11061493±394
Glycogen8015±18274570±1113
LiverSummerGlucose869±256604±165
Glycogen1722±7741949±482
WinterGlucose390±89406±41
Glycogen2001±4304901±3053
  • Values are means ± s.e.m. (N=6-8).

  • * d.p.m. μmol-1 lactate.