The Adherent Filaments of Eggs of Isaza(Chaenogobius isaza Tanaka, pisces)

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概要

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• The adherent filaments of eggs of Isaza (Chaenogobius isaza Tanaka) are formed during the tertiary yolk globule stage between the egg membrane and the granulosa cell layer. The long granulosa cells are arranged along the meridional line from the micropyle to the antipodes. Since the filaments are formed between the granulosa cell rows, the arrangement of the filaments is dependent on the arrangement of the granulosa cells. Thus, the filaments show a reticular structure around the micropyle, and run almost parallel to the meridional lines on the rest of the egg surface. Once the egg is released into water and sticks to the wall of the vessel, the adherent filaments detach from the egg membrane and turn inside out, except around the micropyle and in this way form the stalk of the egg. In other species of gobiid fish, the structure and origin of the adherent filaments is essentially the same. The eggs of osmerids and salangids, though only distantly related to gobiids, also have adherent membranes (filaments) of similar structure.

• 社団法人日本動物学会の論文
• 1978-09-25

著者

• Takahashi Sachiko

  Otsu Hydrobiological Station Kyoto University

関連論文

• The Adherent Filaments of Eggs of Isaza(Chaenogobius isaza Tanaka, pisces)

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