METABOLIC RATE AND ITS TEMPERATURE-ADAPTIVE SIGNIFICANCE IN SIX GEOGRAPHIC RACES OF PEROMYSCUS.

The metabolic rate characteristics of six races of Peromyscus, selected from a wide range of habitats, have been determined over the temperature range 0° to 35 °C. After acclimation to standardized laboratory conditions, critical temperatures and metabolic responses to temperatures below thermoneutrality were largely a function of body size: the larger the mouse, the greater its thermoregulatory efficiency. Body size per se is not correlated with the gross climate of the respective habitats. A single equation which predicts the metabolic rate of these races at any temperature between 0° and 27 °C, from a knowledge of body weight and body temperature, is derived.When considered as a single group, the basal oxygen consumption of all races varied with body weight0,60 over the body weight range of 14.7 to 36.0 g and was insignificantly different from the accepted interspecies approximation. The basal metabolic rates of each race showed no temperature-adaptive differences, especially when considered in relatio...

[1]  R. E. Carpenter.  A comparison of thermoregulation and water metabolism in the kangaroo rats Dipodomys agilis and Dipodomys merriami , 1966 .

[2]  J. Hayward.  THE GROSS BODY COMPOSITION OF SIX GEOGRAPHIC RACES OF PEROMYSCUS. , 1965, Canadian Journal of Zoology.

[3]  C. H. Buckner.  METABOLISM, FOOD CAPACITY, AND FEEDING BEHAVIOR IN FOUR SPECIES OF SHREWS , 1964 .

[4]  R. Mckenzie.  The response of the laboratory rat to changes in the caloric density and protein:calorie ratio of its ration , 1964 .

[5]  B. McNab,et al.  A Model of the Energy Budget of a Wild Mouse , 1963 .

[6]  B. McNab,et al.  Body Temperature and Metabolism in Subspecies of Peromyscus from Arid and Mesic Environments , 1963 .

[7]  J. Eisenberg.  The Intraspecific Social Behavior of Some Cricetine Rodents of the Genus Peromyscus , 1963 .

[8]  M. Zarrow,et al.  Seasonal Variation in Thyroid Gland Activity in Deermice.∗ , 1962, Proceedings of the Society for Experimental Biology and Medicine. Society for Experimental Biology and Medicine.

[9]  F. T. Jung.  The Fire of Life , 1962 .

[10]  J. A. Sealander.  Seasonal Changes in Blood Values of Deer Mice and Other Small Mammals , 1962 .

[11]  M. Murie.  Metabolic Characteristics of Mountain, Desert and Coastal Populations of Perormyscus , 1961 .

[12]  R. Macmillen,et al.  Oxygen Consumption, Estivation, and Hibernation in the Kangaroo Mouse, Microdipodops pallidus , 1961, Physiological Zoology.

[13]  R. Wiegert.  Respiratory Energy Loss and Activity Patterns in the Meadow Vole, Microtus Pennsylvanicus Pennsylvanicus , 1961 .

[14]  D. Foster.  Differences in Behavior and Temperament Between Two Races of the Deer Mouse , 1959 .

[15]  P. Morrison,et al.  Body Temperature in the White-Footed Mouse, Peromyscus leucopus noveboracensis , 1959, Physiological Zoology.

[16]  Hart Js.  Climatic and temperature induced changes in the energetics of homeotherms. , 1957 .

[17]  P. S. Enger.  Heat regulation and metabolism in some tropical mammals and birds. , 1957, Acta physiologica Scandinavica.

[18]  G. Bartholomew,et al.  Temperature Regulation, Hibernation, and Aestivation in the Little Pocket Mouse, Perognathus longimembris , 1957 .

[19]  J. S. Hart,et al.  SEASONAL CHANGES IN INSULATION OF THE FUR , 1956 .

[20]  W. Dawson.  The Relation of Oxygen Consumption to Temperature in Desert Rodents , 1955 .

[21]  L. Irving,et al.  The Metabolism of Some Alaskan Animals in Winter and Summer , 1955, Physiological Zoology.

[22]  P. F. Scholander.  EVOLUTION OF CLIMATIC ADAPTATION IN HOMEOTHERMS , 1955 .

[23]  J. P. Hannon,et al.  Metabolic Differences between Three Strains of Peromyscus maniculatus , 1954 .

[24]  J. Hart.  RATE OF GAIN AND LOSS OF COLD RESISTANCE IN MICE , 1953 .

[25]  C. S. Blyth,et al.  LEAN body mass as a metabolic reference standard. , 1953, Nutrition reviews.

[26]  G. Salt.  The Relation of Metabolism to Climate and Distribution in Three Finches of the Genus Carpodacus , 1952 .

[27]  J. A. Sealander.  Survival of Peromyscus in Relation to Environmental Temperature and Acclimation at High and Low Temperatures , 1951 .

[28]  P. F. Scholander,et al.  Adaptation to cold in arctic and tropical mammals and birds in relation to body temperature, insulation, and basal metabolic rate. , 1950, The Biological bulletin.

[29]  P. F. Scholander,et al.  Heat regulation in some arctic and tropical mammals and birds. , 1950, The Biological bulletin.

[30]  W. F. Blair.  ECOLOGICAL FACTORS IN SPECIATION OF PEROMYSCUS , 1950 .

[31]  Ernst Mayr,et al.  ECOLOGICAL FACTORS IN SPECIATION , 1947 .

[32]  M. Kleiber.  Body size and metabolic rate. , 1947, Physiological reviews.

[33]  O. Pearson,et al.  The Rate of Metabolism of Some Small Mammals , 1947 .

[34]  L. Walford,et al.  Bioenergetics and Growth , 1947 .