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  • Title: Changes in teleost yolk proteins during oocyte maturation: correlation of yolk proteolysis with oocyte hydration.
    Author: Greeley MS, Calder DR, Wallace RA.
    Journal: Comp Biochem Physiol B; 1986; 84(1):1-9. PubMed ID: 3459621.
    Abstract:
    Yolk proteins of prematuration occytes and postmaturation eggs were compared by SDS gel electrophoresis in several teleosts, including freshwater species that produce demersal eggs, estuarine and marine species with demersal eggs, and marine species with pelagic eggs. In certain teleosts distinct changes in yolk protein banding patterns during oocyte maturation are suggestive of extensive secondary proteolysis of yolk proteins at this time; proteolysis is most pronounced in marine fishes with pelagic eggs. In many teleosts the oocyte swells by hydration during maturation; this hydration is also most pronounced in marine fishes with pelagic eggs. The extent of yolk proteolysis is well correlated with the extent of oocyte hydration during maturation.
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