Plasma Proteins of Coho Salmon, Oncorhynchus kisutch, as Separated by Zone Electrophoresis

Abstract

Plasma proteins, as separated by zone electrophoresis, of coho salmon have been investigated from an early age to spawning and death. A protein fraction which may be similar to γ-globulin in other vertebrates increased throughout the period studied. Smolt transformation was associated with a temporary disappearance of the fastest migrating protein fraction. A lipoprotein fraction, presumably serum vitellin, was associated with egg formation. Serum vitellin was absent from the plasma of males, immature females, spawning females and spawned-out females.