Electron Microscopic Observation of the Formation of the Chorion in Pagras major

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概要

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• Formation of the vitelline envelope and chorion in the eggs of the porgy, Pagras major, was investigated with a scanning and transmission electron microscope. The formation of the vitelline envelope started when the oocyte reachsd 150 μm in diameter. The outer layer of the chorion was formed initially, followed by the inner later. In the final process of chorion formation, the inner layer developed into circular strata. On the surface of the chorion of the mature egg, numerous small pits were observed. It was clearly shown that the pits were vestiges of the interspaces (tiny gaps) between the microvilli which appeared at early stage of the vitelline envelope forma-tion. The structural material of inner layer of the chorion was presumed to originate from the oocyte.

• 社団法人日本動物学会の論文
• 1983-03-25

著者

• Hosokawa Kazuko

  Biological Institute Predental Course Of Tokyo Dental College

• Hosokawa Kazuko

  Biological Laboratory Tokyo Dental College

関連論文

• Electron Microscopic Observation of Chorion Formation in the Teleost, Navodon modestus(Developmental Biology)
• Note on the Induction of Oviposition by Injection of Acetylcholine,Serotonin or Histamine in the Fish,Oryzias latipes
• Electron Microscopic Observation of the Formation of the Chorion in Pagras major

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