, Volume 84, Issue 1–2, pp 71–73 | Cite as

On the magnesium content of the egg of the Medaka,Oryzias latipes, and its changes accompanying fertilization

  • Reiji Hori


The content of total and bound magnesium of the egg of the Medaka,Oryzias latipes was determined by atomic absorption spectrophotometry. The amount of total magnesium remained unchanged before and after fertilization. When the egg was fertilized, the concentration of bound magnesium decreased in ten minutes after fertilization and then amounted to upwards of the original value by the blastula. The role of magnesium in the fertilization process was discussed with the presence of the experimental results.


Magnesium Atomic Absorption Atomic Absorption Spectrophotometry Magnesium Content Fertilization Process 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Hamano, S., 1957: Physico-chemical studies on the activation and fertilization of fish egg. Mem. Fac. Fisheries Hokkaido Univ.5, 91–143.Google Scholar
  2. Hori, R., 1973: On the relationship between water-soluble protein and calcium in the egg ofOryzias latipes. Protoplasma78, 285–290.Google Scholar
  3. —, andT. Yoshida, 1973: On the magnesium content in sea urchin eggs and its changes accompanying fertilization. Protoplasma77, 137–140.PubMedGoogle Scholar
  4. Ishikawa, M., 1962: The relation between the incorporation of phosphorus and the induction of cleavage by hypertonic treatment in the sea urchin egg. Embryologia7, 109–126.Google Scholar
  5. Monroy, A., 1956: Some experiments concerning the chemical mechanisms of the activation of the sea urchin eggs. Exp. Cell Res.10, 320–323.PubMedGoogle Scholar
  6. Nakamura, M., 1950: Colorimetric determination of phosphorus. Jap. J. Agric. Chem. (Nippon Nogei Kagakukaishi)24, 1–5.Google Scholar
  7. Sugiyama, M., 1953: Physiological analysis of the cortical response of the sea urchin egg to stimulating reagents. II. The propagating or non-propagating nature of the cortical changes induced by various reagents. Biol. Bull.104, 216–223.Google Scholar
  8. Yamagami, K., 1963: Changes in the amounts of some endogenous phosphate in the development of the sea urchin. Zool. Mag. (Dobutugakuzasshi)72, 252–255.Google Scholar
  9. Yamamoto, T., 1954: Physiological studies on fertilization and activation of fish eggs. V. The role of calcium ions in activation ofOryzias eggs. Exp. Cell Res.6, 56–68.PubMedGoogle Scholar
  10. —, 1956: The physiology of fertilization in the medaka (Oryzias latipes). Exp. Cell Res.10, 387–393.PubMedGoogle Scholar
  11. —, 1961: Physiology of fertilization in fish eggs. Internat. Rev. Cytol.12, 361–405.Google Scholar
  12. —, 1962: Mechanism of breakdown of cortical alveoli during fertilization in the medaka,Oryzias latipes. Embryologia7, 228–251.Google Scholar

Copyright information

© Springer-Verlag 1975

Authors and Affiliations

  • Reiji Hori
    • 1
  1. 1.Biological InstituteToyama UniversityToyamaJapan

Personalised recommendations