Body Size, Insulation, and Optimum Body Temperatures of Homeotherms

  • James R. Spotila
  • David M. Gates
Part of the Ecological Studies book series (ECOLSTUD, volume 12)


The purpose of this study is to determine quantitatively the role of physical and physiological properties of homeotherms in the adaptation of these animals to their physical environment. A theoretical model is developed to describe the interaction of an animal’s body size and insulation with the physical characteristics of its environment and the role of all these factors in determining the metabolic rate, body temperature, and evaporative water-loss rate of the animal.


Body Size Allometric Equation Standard Metabolic Rate Evaporative Water Loss High Body Temperature 
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  1. Bartlett, P. N., Gates, D. M.: 1967. The energy budget of a lizard on a tree trunk. Ecology48, 315–322.CrossRefGoogle Scholar
  2. Birkebak, R. C.: 1966. Heat transfer in biological systems. Intern. Rev. Gen. and Expt. Zool. 2, 269–344.Google Scholar
  3. Brock, T. D.: 1967. Life at high temperatures. Science 158, 1012–1019.PubMedCrossRefGoogle Scholar
  4. Brody, S., Procter, R. C.: 1932. Growth and development with special reference to domestic animals. Further investigations of surface area in energy metabolism. Mo. Res. Bull. 116.Google Scholar
  5. Brown, J. H., Lasiewski, R. C.: 1972. Metabolism of weasels: the cost of being long and thin. Ecology 53, 939–943.CrossRefGoogle Scholar
  6. Brown, J. H., Lasiewski, R. C., Lee, A. K.: 1969. Bergmann’s rule and climate adaptation in woodrats (Neo-tomd). Evolution 23, 329–338.CrossRefGoogle Scholar
  7. Calder, W. A.: 1968. Respiratory and heart rates of birds at rest. Condor 70, 358–365.CrossRefGoogle Scholar
  8. Calder, W. A.: 1972. Heat loss from small birds: analogy with Ohm’s law and a re-examination of the “Newtonian model.” Comp. Biochem. Physiol. 43A, 13–20.CrossRefGoogle Scholar
  9. Calder, W. A., King, J. R.: 1972. Body weight and the energetics of temperature regulation: a re-examination. J. Expt. Biol. 56, 775–780.Google Scholar
  10. Carey, F. G., Lawson, K. D.: 1973. Temperature regulation in free-swimming blue-fin tuna. Comp. Biochem. Physiol. 44A, 375–392.CrossRefGoogle Scholar
  11. Cremers, C. J., Le Febvre, E. A.: 1965. Thermal modeling applied to animal systems. Trans. Am. Soc. Mech. Engrs., Ser. C, J. Heat Transfer 88, 125–130.Google Scholar
  12. Heller, H. C., Gates, D. M.: 1971. Altitudinal zonation of chipmunks (Eutamias): energy budgets. Ecology 52, 424–433.CrossRefGoogle Scholar
  13. Herreid, C. F., Kessel, B.: 1967. Thermal conductance in birds and mammals. Comp. Biochem. Physiol. 21, 405–414.PubMedCrossRefGoogle Scholar
  14. James, F. C.: 1970. Geographic size variation in birds and its relationship to climate. Ecology 51, 365–390.CrossRefGoogle Scholar
  15. Kendeigh, S. C.: 1969. Tolerance of cold and Bergmann’s rule. Auk 86, 13–25.Google Scholar
  16. Kleiber, M.: 1932. Body size and metabolism. Hilgardia 6, 315–353.Google Scholar
  17. Kleiber, M.: 1961. The fire of life. New York: Wiley.Google Scholar
  18. Kleiber, M.: 1972a. Body size, conductance for animal heat flow and Newton’s law of cooling. J. Theoret. Biol. 37, 139–150.CrossRefGoogle Scholar
  19. Kleiber, M.: 1972b. A new Newton’s law of cooling? Science 178, 1283–1285.PubMedCrossRefGoogle Scholar
  20. Lasiewski, R. C., Dawson, W. R.: 1967. A re-examination of the relation between standard metabolic rate and body weight in birds. Condor 69, 13–23.CrossRefGoogle Scholar
  21. Lichti P.: 1967. Thermal adaptation in the enzymes of lizards in relation to preferred body temperatures. In Molecular mechanisms of temperature adaptation (ed. C. L. Prosser), pp. 131–145. Am. Assoc. Advan. Sci. Publ. 84.Google Scholar
  22. Lindsey, C. C.: 1966. Body sizes of pokilothermic vertebrates at different latitudes. Evolution 20, 456–465.CrossRefGoogle Scholar
  23. McNab, B. K.: 1969. The economics of temperature regulation in neotropical bats. Comp. Biochem. Physiol. 31, 227–268.PubMedCrossRefGoogle Scholar
  24. McNab, B. K.: 1970. Body weight and the energetics of temperature regulation. J. Expt. Biol. 53, 329–348.Google Scholar
  25. McNab, B. K.: 1971. On the ecological significance of Bergmann’s rule. Ecology 52, 845–854.CrossRefGoogle Scholar
  26. Morowitz, H. J.: 1968. Energy flow in biology. New York: Academic Press.Google Scholar
  27. Porter, W. P., Gates, D. M.: 1969. Thermodynamic equilibria of animals with environment. Ecol. Monog. 39, 245–270.CrossRefGoogle Scholar
  28. Prosser, C. L., Brown, F. A., Jr.: 1961. Comparative animal physiology. Philadelphia: Saunders.Google Scholar
  29. Ricklefs, R. E.: 1973. Ecology. Newton, Mass.: Chiron Press.Google Scholar
  30. Schmidt-Nielsen, K.: 1972. How animals work. New York: Cambridge Univ. Press.Google Scholar
  31. Scholander, P. F.: 1955. Evolution of climatic adaptations in homeotherms. Evolution 9, 15–26.CrossRefGoogle Scholar
  32. Scholander, P. F., Hock, R., Walters, V., Irving, L.: 1950. Adaptation to cold in arctic and tropical mammals and birds in relation to body temperature, insulation, and basal metabolic rate. Biol. Bull. 99, 259–271.PubMedCrossRefGoogle Scholar
  33. Spotila, J. R., Lommen, P. W., Bakken, G. S., Gates, D. M.: 1973. A mathematical model for body temperatures of large reptiles: implications for dinosaur ecology. Am. Naturalist 107, 391–404.CrossRefGoogle Scholar
  34. Spotila, J. R., Soule, O. H., Gates, D. M.: 1972. Biophysical ecology of the alligator—heat energy budgets and climate spaces. Ecology 53, 1094–1102.CrossRefGoogle Scholar
  35. Strunk, T. H.: 1971. Heat loss from a Newtonian animal. J. Theoret. Biol. 33, 35–61.CrossRefGoogle Scholar
  36. Tracy, C. R.: 1972. Newton’s law: its application for expressing heat losses from homeotherms. Bioscience 22, 656–659.CrossRefGoogle Scholar
  37. Yarbrough, C. G.: 1971. The influence of distribution and ecology on the thermoregulation of small birds. Comp. Biochem. Physiol. 39A, 235–266CrossRefGoogle Scholar

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© Springer-Verlag New York Inc. 1975

Authors and Affiliations

  • James R. Spotila
  • David M. Gates

There are no affiliations available

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