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KMID : 0378019860290090059
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New Medical Journal
1986 Volume.29 No. 9 p.59 ~ p.71
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Cytological studies of spermatogenesis in the frog during the hibernating phase
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Abstract
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In the Rana temporaria dybowskii Guenther, the testis were observed with light and electron microscope during the active and hibernating phases.
1. The results of light microscopic observation were as follows:
The testis of the frog consisted of many seminiferous tubules and interstitial cells. In the active phase, the seminiferous tubules of the frog divided into 5 kinds of cell (spermatogonium, primary spermatocyst, secondary spermatocyst, spermatid cyst and sperm) arranged from the basement membrane to the lumen.
In the hibernating phase, the seminiferous tubules divided into merely 2 cell types: the spermatogonium at the basement membrane of the seminiferous tubules and sperm bundles which is observed between two spermatogonia. And, in this phase, well developed interstitial cells were especially observed among the seminiferous tubules.
2. The results of the electron microscopic observations were as follows:
The cells(spermatogonium, interstitial cell and Sertoli cell) which could be commonly observed in the active and hibernating phases were noted.
According to the type of the nucleus and their cell organelles, the spermatogonium was identified with the secondary stage in the active phase and the spermatogonial development of the hibernating phase was assumed as "quiescence" at the primary stage.
In the active phase, the nucleus occupied the most part of the interstitial cell and its cytoplasm consisted of lipid droplets and remarkably expanded mitochondria. In the hibernating phase, the interstitial cell showed characteristic ultra structure in the cytoplasm which indicated synthetic activity of the steroid hormones.
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