Seasonal changes in testicular structure and function in the blue fox (Alopex lagopus), as quantified by morphometric analysis and measurement of adenylate cyclase activity

International Journal of Andrology
A J SmithV Hansson

Abstract

The volume of the blue fox testis showed 5-fold changes during the year, associated with considerable changes in cellular composition. The seminiferous epithelium was maximally regressed in August, when 94% of tubules contained only spermatogonia. By late October, approximately 6 months before the mating season, 40% of tubules contained primary spermatocytes. From the middle of January until the end of April all tubules contained spermatids or more advanced haploid cells. Tubular diameter increased by 73% during testicular re-development, and epithelial height increased 3-fold. Regression to the basal state occurred during May to July. The volume densities of the seminiferous epithelium and of interstitial tissue remained approximately constant throughout the year. Soluble Mn2+-dependent adenylate cyclase activity showed seasonal variations that paralleled those of the haploid germ cell population and testicular volume, whereas somatic cell adenylate cyclase activity was relatively constant.

References

Jan 1, 1979·Archives of Andrology·O P ClausenV Hansson
Jan 1, 1985·Archives of Andrology·A J SmithV Hansson
Jan 1, 1974·Current Topics in Molecular Endocrinology·K J CattM L Dufau
Jan 1, 1980·Annual Review of Biochemistry·E M Ross, A G Gilman
Jan 1, 1984·The Journal of Clinical Investigation·A G Gilman
May 1, 1982·Archives of Andrology·J O GordeladzeV Hansson
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Jul 1, 1950·The American Journal of Anatomy·E C ROOSEN-RUNGE, L O GIESEL

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Citations

Dec 3, 1998·Animal Reproduction Science·W Farstad
Aug 11, 2000·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·E FugleiJ P Berg
Jan 1, 1990·Journal of Neurobiology·E W RubelD Durham
Jan 4, 2013·Reproduction in Domestic Animals = Zuchthygiene·R Nuñez FavreM A Stornelli

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