ウニ精子の所謂穿孔運動に關する一考察

概要

論文の詳細を見る
The present study was carried out employing as the material Strongylocentrotus intermedius and S. nudus. The results obtained were as follows. 1. In the case of normal fertilization, when spermatozoa come in contact with egg surface they begin very active so-called boring movement and one of them enters the egg. The fertilization membrane immediately begins to lift. With the lifting of the membrane, on the other hand, supernumerary spermatozoa decrease gradually their active movement on egg surface (cf. Fig. 1). 2. No fertilization takes place in deficiency of calcium ions. In this case no boring movement of spermatozoa, in other words, no activation on egg surface occurs. At this time, however, on adding a small amount of calcium, they are activated to begin the boring movement and the fertilization takes place (cf. Fig. 2). 3. The percentage of fertilization in the crossing between the eggs of S. intermedius and spermatozoa of S. mudus and that in the reversed crossing were 100 and 9 respectively (in heavy insemination; final conc. of spermatozoa was 1/100). In the former case spermatozoa showed the active boring movement while in the latter the movement was not striking (cf. Tabel 2 and Fig. 3). 4. Therefore, it is suggested that in the process of normal fertilization the active boring movement of spermatozoa is always accompanied and for this movement, viz. activation of spermatozoa, calcium ions play an important role.
社団法人日本動物学会の論文
1953-06-15

ウニ精子の所謂穿孔運動に關する一考察

スポンサーリンク

概要

著者

関連論文

スポンサーリンク