The regulation of circadian rhythm of spermatogenesis flow in white rats

In this paper we studied the circadian rhythm of the flow of spermatogenesis key stages – the proliferation of spermatogonia, meiosis, sperm separation – under the regime of illu-mination: 12 hours light and 12 hours dark. Circadian rhythms were detected with spectral analysis programs, and graphically the parametric method. It is shown that the removal of the pineal gland leads to a loss of circadian rhythms and mismatch in flow of the spermatogenesis stages with the dark-light cycle. The testis denervation does not cause the disappearance of defined rhythms, while reducing studied processes vibration amplitude.