Ultrastructural Changes in Developing Oocytes, Nurse Cells, and Follicular Cells during Oogenesis in the Telotrophic Ovarioles of Bothrogonia japonica ISHIHARA (Homoptera, Tettigellidae)

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概要

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• The ultrastructural changes in oocytes, nurse cells and follicular cells of Bothrogonia japonica (Homoptera, Tettigellidae) are described. Nutritive tissue in the germarium consists of three regions, viz., the anterior, middle and posterior. The nurse cells occupying the anterior region are small in size and each of them has an irregularly shaped nucleus. The middle region is the transitional zone in which the cells have two nuclei. In the posterior region, the cells and their nuclei become greatly enlarged and arranged around the central core. In this region, the successive degenerating changes in the nurse cells are observed in or around the nutritive core. The cytoplasm of the nutritive core and cord are densely and uniformely packed with ribosomes and microtubules similar to those of Notonecta and Rhodnius of Heteroptera. The oogenesis has been divided into five developmental stages, two of which are vitellogenic. During the previtellogenesis of oocytes, several interesting figures which may suggest the multiplication of mitochondria were obtained. The lipid and proteid yolk seem to be formed by a similar method to those reported in many other insects. The vitelline membrane and chorion seem to be deposited by the follicular cells after yolk formation.

• 日本昆虫学会の論文
• 1975-03-25

著者

• Matsuzaki Morio

  Laboratory Of Biology Faculty Of Education Fukushima University

関連論文

• Ovarian Structure and Oogenesis of the Webspinner Oligotoma japonica (Embioptera, Oligotomidae)
• Ultrastructural Changes in Developing Oocytes, Nurse Cells, and Follicular Cells during Oogenesis in the Telotrophic Ovarioles of Bothrogonia japonica ISHIHARA (Homoptera, Tettigellidae)

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