Induction of vitellogenin and gonadal impairment in chub (Leuciscus cephalus L.) after exposure to 17beta-estradiol and testosterone.
OBJECTIVES: A controlled laboratory study was carried out to quantify vitellogenin (VTG) concentrations in a common cyprinid freshwater fish, the chub (Leuciscus cephalus L.), exposed to steroid hormones.
DESIGN: The effect of 17betaestradiol, testosterone and testosterone-estradiol mixture was investigated on vi.....