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THE EFFECT OF SOLUBLE EGG JELLY ON THE FERTILIZABILITY OF ACID‐DEJELLIED SEA URCHIN EGGS *
Author(s) -
VACQUIER VICTOR D.,
BRANDRIFF BRIGITTE,
GLABE CHARLES G.
Publication year - 1979
Publication title -
development, growth and differentiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.864
H-Index - 66
eISSN - 1440-169X
pISSN - 0012-1592
DOI - 10.1111/j.1440-169x.1979.00047.x
Subject(s) - sea urchin , fishery , biology , zoology , anatomy , ecology
Acid‐dejellied Lytechinus pictus eggs bind few sperm and show decreased fertilizability. Addition of solubilized egg jelly increases sperm binding and fertilizability, presumably by increasing the frequency of the acrosome reaction. However, dejellied Strongylocentrotus purpuratus bind more sperm and show increased fertilizability in the complete absence of soluble egg jelly. Addition of soluble egg jelly greatly decreases fertilizability in S. purpuratus . Such species differences may be the basis for the controversy between Lillie and Tyler on the one hand, who believed that egg jelly increased egg fertilizability; while Loeb and Hagström on the other hand, believed jelly had no effect on, or actually decreased egg fertilizability. 125 I‐labeling of dejellied S. purpuratus egg surfaces and immunofluorescent studies show that egg jelly persists on the surfaces of acid‐dejellied eggs. Egg jelly appears to be a non‐removable component of the vitelline layer of this species.