Experientia

, Volume 45, Issue 1, pp 102–103 | Cite as

Effects of photoperiod, temperature and testosterone-treatment on plasma T3 and T4 levels in the Djungarian hamster,Phodopus sungorus

  • A. Masuda
  • T. Oishi
Short Communications

Summary

The effects of photoperiod, temperature and testosterone treatment on plasma T3 and T4 levels were investigated in the Djungarian hamster. Plasma T3 level was affected by temperature (25°C<7°C) but not by photoperiod. Plasma T4 level was affected by photoperiod (short day < long day) at 25°C. Administration of testosterone increased plasma T4 level under short photoperiod at 25°C. Thus, higher plasma T4 level under long photoperiod at 25°C might be induced by testosterone.

Key words

Djungarian hamster photoperiod temperature T3 T4 testosterone 

References

  1. 2.
    Hoffmann, K., J. comp. Physiol.85 (1973) 267.CrossRefGoogle Scholar
  2. 3.
    Heldmaier, G., and Steinlechner, S., J. comp. Physiol. (B)142 (1981) 429.Google Scholar
  3. 4.
    Wade, G. W., and Bartness, T. J., Am. J. Physiol.246 (1984) R 26.Google Scholar
  4. 5.
    Vitale, P. M., Darrow, J. M., Duncan, M. J., Shustak, C. A., and Goldman, B. D., J. Endocr.106 (1985) 367.PubMedGoogle Scholar
  5. 6.
    Bartness, T. J., and Wade, G. N., Neurosci. Biobehav. Rev.9 (1985) 599.CrossRefPubMedGoogle Scholar
  6. 7.
    Masuda, A., and Oishi, T., J. exp. Zool., in press.Google Scholar
  7. 8.
    Tsutsui, K., Kawashima, S., Masuda, A., and Oishi, T., Endocrinology122 (1988) 1094.PubMedGoogle Scholar
  8. 9.
    Bauman, T. R., Anderson, R. R., and Turner, C. W., Gen. comp. Endocr.10 (1968) 92.CrossRefPubMedGoogle Scholar
  9. 10.
    Hoffman, R. A., Davidson, K., and Steinberg, K., Growth46 (1982) 150.PubMedGoogle Scholar
  10. 11.
    Vaughan, M. K., Powanda, M. C., Richardson, B. A., King, T. S., Johnson, L. Y., and Reiter, R. J., Comp. Biochem. Physiol.71A (1982) 615.CrossRefGoogle Scholar
  11. 12.
    Vaughan, M. K., Brainard, G. C., and Reiter, R. J., Int. J. Biometeor.28 (1984) 201.Google Scholar
  12. 13.
    Petterborg, L. J., Vaughan, M. K., Johnson, L. Y., Champney, T. H., and Reiter, R. J., Comp. Biochem. Physiol.78A (1984) 31.CrossRefGoogle Scholar
  13. 14.
    Seidel, A., Heldmaier, G., and Schulz, F., Comp. Biochem. Physiol.88A (1987) 71.CrossRefGoogle Scholar
  14. 15.
    Vriend, J., Reiter, R. J., and Anderson, G. R., Gen. comp. Endocr.38 (1979) 189.CrossRefPubMedGoogle Scholar
  15. 16.
    Vriend, J., Bertalanffy, F. D., and Ralcewicz, T. A., Biol. Reprod.36 (1987) 719.PubMedGoogle Scholar

Copyright information

© Birkhäuser Verlag 1989

Authors and Affiliations

  • A. Masuda
    • 1
    • 2
  • T. Oishi
    • 1
    • 2
  1. 1.Department of Human Life and Environmental ScienceGraduate Division of Human CultureNaraJapan
  2. 2.Department of Biology, Faculty of ScienceNara Women's UniversityNaraJapan

Personalised recommendations