Journal of Comparative Physiology B

, Volume 158, Issue 3, pp 301–305 | Cite as

Evidence that olfactory bulbectomy does not influence testicular regression in golden hamsters on short photoperiod by altering pineal melatonin production

  • D. R. Pieper
  • R. J. Reiter
  • P. D. Unthank
  • J. F. Addy


A recent study has shown that olfactory bulbectomy (BX) will prevent reproductive regression associated with short photoperiod in male golden hamsters. The results of experiments reported in this paper show that bulbectomized hamsters on long or short photoperiod still show a large nocturnal elevation in pineal melatonin production and that BX inhibits the reproductive regression induced by exogenous melatonin in pinealectomized hamsters. The data therefore indicate that BX does not inhibit short photoperiod induced testicular regression by altering melatonin secretion.


Melatonin Human Physiology Golden Hamster Short Photoperiod Melatonin Secretion 
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Copyright information

© Springer-Verlag 1988

Authors and Affiliations

  • D. R. Pieper
    • 1
  • R. J. Reiter
    • 2
  • P. D. Unthank
    • 1
  • J. F. Addy
    • 1
  1. 1.Department of PhysiologyProvidence HospitalSouthfieldUSA
  2. 2.Department of Cellular and Structural BiologyThe University of Texas Health Science Center at San AntonioSan AntonioUSA

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