Effect of external factors on gonadal activity and body mass of male golden hamsters (Mesocricetus auratus)

Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology
L JanskýP Dvorák

Abstract

Effects of photoperiod, temperature and food and water availability on body and testicular mass of golden hamsters were investigated. Lack of water or food inhibited body growth. Short photoperiod (LD 8:16) enhanced body growth in males fed 'poor diet' but it had no effect in animals on 'high quality diet'. Cold exposure diminished body growth in animals with access to water but not in those deprived of water. It is suggested that lowered motor activity is mainly responsible for body mass gain of animals kept under the short photoperiod. All stressful factors (water deprivation, 'poor diet' or cold) induced involution of testes. The time course of testicular involution was similar to that induced by short photoperiod. Testicular involution was, after several weeks, followed by spontaneous recrudescence. Combination of stressful external cues speeded up testicular involution. Since the testicular involution induced by water deprivation, "poor diet" and cold also occurred in animals kept in constant light or under long photoperiod (which are known to produce functional pinealectomy) it is concluded that the inhibitory effects of stressful external factors on testes are not mediated by the pineal. The decrease in testosterone prod...Continue Reading

References

Feb 1, 1979·Biology of Reproduction·F W Turek, C S Campbell
Jan 1, 1979·Progress in Brain Research·K Hoffmann
Aug 1, 1978·Journal of Steroid Biochemistry·R HamplL Stárka
Apr 1, 1977·Pharmacology, Biochemistry, and Behavior·P C Datta, M G King
Mar 1, 1973·Journal of Reproduction and Fertility·B E Howland, K R Skinner
Jul 1, 1970·The Journal of Experimental Zoology·J L Frehn, C C Liu
Feb 1, 1970·Endocrinology·R H Printz, G S Greenwald
Mar 1, 1968·The Journal of Endocrinology·R Wong, C B Whiteside
Feb 1, 1967·The American Journal of Physiology·J C Roberts, R E Smith
Nov 1, 1983·The American Journal of Physiology·D BrownR C DeSousa
Nov 1, 1984·The American Journal of Physiology·M M CivanC Deutsch

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Citations

Sep 10, 2005·Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology·Xing-Sheng Li, De-Hua Wang
Aug 16, 2011·Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology·Lin ZhangZheng-Kun Wang
Aug 30, 2011·Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology·Jing-Feng ChenDe-Hua Wang
Mar 10, 2009·Zoological Science·Daniel FryntaVladimír Vohralík
Feb 8, 2002·American Journal of Physiology. Regulatory, Integrative and Comparative Physiology·Jennie E LarkinIrving Zucker
Apr 26, 2003·American Journal of Physiology. Regulatory, Integrative and Comparative Physiology·Jérôme S MenetPaul Pévet

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