Journal of comparative physiology

, Volume 93, Issue 2, pp 117–125 | Cite as

Body surface temperatures of jerboas (Allactaga) in uniform thermal environments

  • Richard W. Hill
  • Douglas M. Lay
  • James H. Veghte


Body surface temperatures of threeAllactaga elater and oneA. hotsoni were measured by infrared radiography at ambient temperatures of 1° to 42°C. In each test the radiant temperature of environmental surfaces was the same as air temperature.

At ambient temperatures of 40–42°C, the temperature of the entire body surface was close to ambient temperature. As ambient temperature was lowered toward 1°C, forehead and back temperatures became increasingly greater than ambient temperature (Fig. 3), indicating an increasing thermal flux across these parts of the body. Forehead and back temperatures were linear functions of ambient temperature below thermoneutrality and behaved as expected according to a model of thermal exchange developed here. The surface temperature of the extraordinarily large pinnae remained close to ambient temperature down to 10°C (Fig. 3), indicating that deep pinna temperature likely falls with decreasing ambient temperature and that the pinnae, despite their size, are not major sites of heat loss at low ambient temperatures.


Surface Temperature Ambient Temperature Linear Function Human Physiology Heat Loss 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Birkebak, R. C.: Heat transfer in biological systems. Int. Rev. gen. exp. Zool.2, 269–344 (1966)Google Scholar
  2. Colin, J., Timbal, J., Guieu, J., Boutelier, C., Houdas, Y.: Combined effect of radiation and convection. In: Physiological and behavioral temperature regulation, p. 81–96, J. D. Hardy, A. P. Gagge, J. A. J. Stolwijk, eds. Springfield: Charles C. Thomas 1970Google Scholar
  3. Hammel, H. T.: Infrared emissivities of some Arctic fauna. J. Mammal.37, 375–378 (1956)Google Scholar
  4. Kalabukhov, N. I.: Periodicheskie izmeneniya v organizme gryzunov. Leningrad: Akad. Nauk SSSR, Ob'edinennyi nauchnyi sovet “fiziologiya cheloveka i zhivotnykh” Izd “Nauk” 1969Google Scholar
  5. Kleiber, M.: A new Newton's law of cooling? Science178, 1283–1285 (1972)Google Scholar
  6. Porter, W. P., Gates, D. M.: Thermodynamic equilibria of animals with environment. Ecol. Monogr.39, 227–244 (1969)Google Scholar
  7. Siegel, R., Howell, J. R.: Thermal radiation heat transfer. New York: McGraw-Hill Book Company 1972Google Scholar
  8. Tracy, C. R.: Newton's law: Its application for expressing heat losses from homeotherms. BioScience22, 656–659 (1972)Google Scholar
  9. Veghte, J. H., Herreid C. F.: Radiometric determination of feather insulation and metabolism of Arctic birds. Physiol. Zool.38, 267–275 (1965)Google Scholar

Copyright information

© Springer-Verlag 1974

Authors and Affiliations

  • Richard W. Hill
    • 1
  • Douglas M. Lay
    • 2
  • James H. Veghte
    • 3
  1. 1.The Museum and Department of ZoologyMichigan State UniversityEast LansingUSA
  2. 2.Department of AnatomyThe University of North CarolinaChapel HillUSA
  3. 3.Aerospace Medical Research LaboratoryWright-Patterson Air Force BaseUSA

Personalised recommendations