メダカ胚の周縁層を通る養分移動(続報)

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概要

• 論文の詳細を見る

• 1) Yolk protrusions into the plasmic layer covering the yolk were observed in sections prior to the blastula stage of a fresh-water teleost, the medaka, Oryzias latipes. 2) The phenomena are observed soon after the fertilization in the peripheral region of the plasmic layer and then the yolk material protruded is dislocated centripetally towards the central axis of the egg. This may be caused by the plasmic stream for the accumulation. 3) They are not observed at all at the 32-cell and the 64-cell stages and also no yolk material is visible in the plasmic layer. This suggests the conversion of the yolk to some other invisible materials, that is, the digestion. 4) In the morula and the blastula stages, they are observed both in the marginal and the subgerminal periblast. 5) Some sort of plasmic movement is suggested as a cause of this protrusion and further studies are expected.

• 公益社団法人 日本水産学会の論文

著者

• 蒲生 英男

  愛知学芸大・生

• 蒲生 英男

  愛知学芸大学生物学教室

関連論文

• メダカの性巣原基の形成(続報)(発生・生理化学)
• メダカ胚の重複陥入について
• メダカ胚の周縁核の追加について
• メダカ胚における周縁核の有糸分裂の生体観察
• メダカ胚の周縁層を通る養分移動(続報)
• メダカの性巣原基の形成(生理・発生・実験形態・生化学・分類・生態)
• メダカの初期発生に見られる特別な細胞について(発生学・実験形態学)

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