海胆受精需要海水中的镁离子。

Fertilization of sea urchins needs magnesium ions in seawater.

作者信息

Sano K, Mohri H

出版信息

Science. 1976 Jun 25;192(4246):1339-40. doi: 10.1126/science.944952.

Abstract

When sea urchin eggs were inseminated in seawater free of magnesium, the fertilization rate was very low. Spermatozoa that had been treated with egg jelly to induce the acrosome reaction also failed to fertilize eggs in seawater free of magnesium. These results indicate that magnesium is indispensable for some process or processes at fertilization, such as membrane, fusion or sperm penetration.

摘要

当海胆卵在不含镁的海水中受精时，受精率非常低。用卵胶处理以诱导顶体反应的精子在不含镁的海水中也无法使卵受精。这些结果表明，镁对于受精过程中的某些过程（如膜融合或精子穿透）是不可或缺的。