The circannual variations on the serum protein fractions of the woodchuck (Marmota monax)

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Department of Biological Sciences


1. 1. Serum proteins of the woodchuck were studied for a period of 1 year to determine seasonal variations and to compare these variations with those reported for other hibernating animals. 2. 2. Total protein, pre-albumin, alpha and beta fractions showed seasonal variations which corresponded to the seasonal activity of the animal. 3. 3. Maximum values occurred just prior to and on into the hibernating period. Minimum levels occurred just prior to and for a few weeks following arousal. 4. 4. The presence of pre-albumin and its significance in the transport of lipids is discussed. This band thus far appears to be absent in other hibernators.

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Comparative Biochemistry and Physiology -- Part A: Physiology