Cytological abnormalities in the ovaries of triploid yellowtail flounder,Limanda ferruginea (Storer)

Abnormal oocytes were detected in the ovaries of triploid yellowtail flounder of three years of age. Triploidy in these females had been induced artificially by hydrostatic pressure shock. Binucleate oocytes were found in the ovaries of six different triploid females. These cells were always small and in a primary growth stage. Cytoplasmic vacuoles, presumed to be due to nucleoplasmic extrusion, was another abnormal feature observed in two primary growth oocytes, each seen in a separate female. The appearance of binucleate oocytes in triploid females, not previously noted in diploid yellowtail flounder, is proposed to be an ephemeral phenomenon associated with the triploid condition.