The Cytoskeleton and Polyspermy in Sea Urchin Eggs

  • L. Santella
Conference paper
Part of the NATO ASI Series book series (volume 45)

Abstract

At fertilization the sea urchin egg undergoes a dramatic structural reorganization of its surface. Within the first few seconds there is a depolarization of the egg plasma membrane and this is followed by a transient increase in intracellular Ca++. The elevated Ca induces the exocytosis of cortical granules and the resulting fertilization membrane helps make the egg refractory to further insemination.

Keywords

Rhodamine Phalloidin 

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Copyright information

© Springer-Verlag Berlin Heidelberg 1990

Authors and Affiliations

  • L. Santella
    • 1
  1. 1.Stazione Zoologica “A. Dohrn” di NapoliNapoliItaly

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