Journal of comparative physiology

, Volume 81, Issue 3, pp 289–299 | Cite as

Aerobic and anaerobic metabolism during activity in the lizardDipsosaurus dorsalis

  • Albert F. Bennett
  • William R. Dawson
Article

Summary

  1. 1.

    Oxygen consumption and lactate content of the lizardDipsosaurusdorsalis were determined under standard conditions and for a bout of maximal activity induced by a 2-min period of electrical stimulation. Observations were made between 25 ° and 45 °C.

     
  2. 2.

    Maximal aerobic scope, 2.27 cm3 O2/(g × hr), occurred at 40 °C (Figs. 2, 4). The increase in oxygen consumption during activity at the various temperatures between 25 ° and 45 °C represented 7- to 17-fold of corresponding resting levels.

     
  3. 3.

    Lactate content of restingDipsosaurus is independent of temperature and averages 0.25 mg/g body weight. Maximal lactate production during the activity induced by a 2-min period of electrical stimulation occurred at 40 °C (Fig. 3). The capacity ofDipsosaurus for anaerobic metabolism exceeds that of other lizards investigated, both in its magnitude and in its thermal dependence.

     
  4. 4.

    The total amount of energy mobilized byDipsosaurus in the activity induced by a 2-min period of electrical stimulation was maximal at 40 °C (Fig. 4). Anaerobiosis accounts for a minimum of 58–83% of the total energetic expenditure.

     
  5. 5.

    It is postulated that the principal physiological adaptations to preferred thermal levels in reptiles have involved energy mobilization during and rapid recovery after activity.

     

Keywords

Oxygen Body Weight Lactate Oxygen Consumption Standard Condition 

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References

  1. Asplund, K. K.: Metabolic scope and body temperatures of whiptail lizards (Cnemidophorus). Herpetologica26, 403–411 (1970).Google Scholar
  2. Beckman, W. A., Mitchell, J. W., Porter, W. P.: Thermal model for prediction of a desert iguana's daily and seasonal behavior. Amer. Soc. Mech. Engineers Publ. 71-WA/HT-35, 7 (1971).Google Scholar
  3. Belkin, D. A.: The running speeds of the lizardsDipsosaurus dorsalis andCallisaurus draconoides. Copeia1961, 223–224 (1961).Google Scholar
  4. Bennett, A. F.: Oxygen transport and energy metabolism in two species of lizards,Sauromalus hispidus andVaranus gouldii. Ph. D. Thesis. Ann Arbor: Univ. of Michigan 1971.Google Scholar
  5. Bennett, A. F.: A comparison of activities of metabolic enzymes in lizards and rats. Comp. Biochem. Physiol.42B, 637–647 (1972a).Google Scholar
  6. Bennett, A. F.: The effect of activity on oxygen consumption, oxygen debt, and heart rate in the lizardsVaranus gouldii andSauromalus hispidus. J. Comp. Physiol.79, 259–280 (1972b).Google Scholar
  7. Bennett, A. F., Dawson, W. R.: Reptilian metabolism. In: Biology of the Reptilia. Physiology A, vol. 5, ed. C. Gans. New York: Academic Press (in press).Google Scholar
  8. Bennett, A. F., Licht, P.: Anaerobic metabolism during activity in lizards. J. Comp. Physiol.81, 277–288 (1972).Google Scholar
  9. Cook, S. F.: Respiratory metabolism of certain reptiles and amphibia. Univ. Calif. Publ. Zool.53, 367–376 (1949).Google Scholar
  10. Dawson, W. R., Bartholomew, G. A.: Relation of oxygen consumption to body weight, temperature, and temperature acclimation in lizardsUta stansburiana andSceloporus occidentalis. Physiol. Zool.29, 40–51 (1956).Google Scholar
  11. Dawson, W. R., Bartholomew, G. A.: Metabolic and cardiac responses to temperature in the lizardDipsosaurus dorsalis. Physiol. Zool.31, 100–111 (1958).Google Scholar
  12. Dawson, W. R., Poulson, T. L.: Oxygen capacity of lizard bloods. Amer. Midl. Nat.68, 154–164 (1962).Google Scholar
  13. Dawson, W. R., Templeton, J. R.: Physiological responses to temperature in the lizardCrotaphytus collaris. Physiol. Zool.36, 219–236 (1963).Google Scholar
  14. DeWitt, C. B.: Behavioral thermoregulation in the iguanid lizard,Dipsosaurus dorsalis. Ph. D. Thesis. Ann Arbor: Univ. of Michigan 1963.Google Scholar
  15. DeWitt, C. B.: Precision of thermoregulation and its relation to environmental factors in the desert iguana,Dipsosaurus dorsalis. Physiol. Zool.40, 49–66 (1967a).Google Scholar
  16. DeWitt, C. B.: Behavioral thermoregulation in the desert iguana. Science158, 809–810 (1967b).Google Scholar
  17. Dill, D. B.: Life, heat, and altitude. Physiological effects of hot climates and great heights. Cambridge: Harvard Univ. Press 1938.Google Scholar
  18. Dill, D. B., Edwards, H. T., Book, A. V., Talbott, J. H.: Properties of reptilian blood. III. The chuckwalla (Sauromalus obesus Baird). J. cell. Comp. Physiol.6, 37–42 (1935).Google Scholar
  19. Fry, F. E. J.: Effects of the environment on animal activity. Pub. Ont. Fish. Res. Lab. No68, 1–62 (1947).Google Scholar
  20. Hemmingsen, A. M.: Energy metabolism as related to body size and respiratory surfaces, and its evolution. Rep. Steno Mem. Hosp. Nord. Insulinlab.9, 1–110 (1960).Google Scholar
  21. Hill, R. W.: Determination of oxygen consumption using the paramagnetic oxygen analyzer. J. appl. Physiol.33, 261–263 (1972).Google Scholar
  22. Licht, P.: Effects of temperature on heart rates of lizards during rest and activity. Physiol. Zool.38, 129–137 (1965).Google Scholar
  23. Mayhew, W. W.: Growth response to photoperiodic stimulation in the lizardDipsosaurus dorsalis. Comp. Biochem. Physiol.14, 209–216 (1965a).Google Scholar
  24. Mayhew, W. W.: Hibernation in the horned lizard,Phrynosoma m'calli. Comp. Biochem. Physiol.16, 103–119 (1965b).Google Scholar
  25. Mayhew, W. W.: Biology of desert amphibians and reptiles, p. 195–356. In: Desert biology, ed. G. W. Brown, Jr. New York: Academic Press 1968.Google Scholar
  26. Mayhew, W. W.: Reproduction in the desert lizard,Dipsosaurus dorsalis. Herpetologica27, 57–77 (1971).Google Scholar
  27. Minnich, J. E.: Water and electrolyte balance of the desert iguana,Dipsosaurus dorsalis, in its natural habitat. Comp. Biochem. Physiol.35, 921–933 (1970a).Google Scholar
  28. Minnich, J. E.: Evaporative water loss from the desert iguana,Dipsosaurus dorsalis. Copeia1970, 575–578 (1970b).Google Scholar
  29. Minnich, J. E., Shoemaker, V. H.: Diet, behavior and water turnover in the desert iguana,Dipsosaurus dorsalis. Amer. Midl. Nat.84, 496–509 (1970).Google Scholar
  30. Moberly, W. R.: Hibernation in the desert iguana,Dipsosaurus dorsalis. Physiol. Zool.36, 152–160 (1963).Google Scholar
  31. Moberly, W. R.: The metabolic responses of the common iguana,Iguana iguana, to activity under restraint. Comp. Biochem. Physiol.27, 1–20 (1968a).Google Scholar
  32. Moberly, W. R.: The metabolic responses of the common iguana,Iguana iguana, to walking and diving. Comp. Biochem. Physiol.27, 21–32 (1968b).Google Scholar
  33. Norris, K. S.: The ecology of the desert iguanaDipsosaurus dorsalis. Ecology34, 265–287 (1953).Google Scholar
  34. Pough, F. H.: Environmental adaptations in the blood of lizards. Comp. Biochem. Physiol.31, 885–901 (1969).Google Scholar
  35. Privitera, C. A., Mersmann, H. J.: Seasonal oxidative phosphorylation by turtle heart mitochondria. Comp. Biochem. Physiol.17, 1045–1048 (1966).Google Scholar
  36. Roberts, L. A.: Oxygen consumption in the lizardUta stansburiana. Ecology49, 809–819 (1968).Google Scholar
  37. Shoemaker, V. H., Licht, P., Dawson, W. R.: Thermal dependence of water and electrolyte excretion in two species of lizards. Comp. Biochem. Physiol.23, 255–262 (1967).Google Scholar
  38. Weathers, W. W.: Physiological thermoregulation in the lizardDipsosaurus dorsalis. Copeia1970, 549–557 (1970).Google Scholar
  39. Wilson, K. J.: The relationships of activity, energy, metabolism, and body temperature in four species of lizards. Ph. D. Thesis. Clayton, Victoria: Monash Univ. 1971.Google Scholar

Copyright information

© Springer-Verlag 1972

Authors and Affiliations

  • Albert F. Bennett
    • 1
  • William R. Dawson
    • 2
  1. 1.Department of ZoologyUniversity of CaliforniaBerkeley
  2. 2.Department of ZoologyThe University of MichiganAnn Arbor

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