カナヘビ Takydromus tachydromoides における精巣間細胞の微細構造

概要

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The interstitial cells of the testis of the Japanese endemic lizard, Takydromus tachydromoides, were studied by electron microscopy. Organelles characteristic of the steroid-secreting cells (smooth endoplasmic reticulum, mitochondria with tubular or lamellar cristae and lipid droplets) appeared in the interstitial cells. Dark and light cells were recognized, but the dark cells were rather rare, especially in spring. The increased electron density of dark cells was due to the presence of a densely-packed smooth endoplasmic reticulum which exhibits higher electron density than its counterpart in the light cells. The endoplasmic reticulum of the light cells showed a vesicularshape with moderately electron dense lumen. Intermediate forms between these two cell types were also observed. In spring the light cells showed a conspicuous system of vacuoles probably originated from the smooth endoplasmic reticulum. Sometimes these vacuoles were in close contact with the mitochondria and lipid droplets. At the mitochondrial surface, vacuolar dilation of the outer membrane was frequently encountered. It seems that the hypertrophy of these membrane systems in spring is concerned with production and secretion of androgenic hormones.
社団法人日本動物学会の論文
1976-09-25