Elevated serum vitellogenin levels and gonadal abnormalities in wild male flounder (Pleuronectes yokohamae) from Tokyo Bay, Japan

摘要

Concentrations of vitellogenin (VTG0 in serum of wild male flounder (Pleuronectes yoko- hamae) were investigated, as a biomarker for environmental estrogens in marine waters, from January 1997 to May 1998 in Tokyo Bay, Japan (n = 130 and from a reference site in Hok- Kaido, Japan, far from urban areas (about 40 km from Hakodate city) from march 1997 to June 1998 (n=62).