Estrogenic activity of tropical fish food can alter baseline vitellogenin concentrations in male fathead minnow (Pimephales promelas).

@article{Beresford2011EstrogenicAO,
  title={Estrogenic activity of tropical fish food can alter baseline vitellogenin concentrations in male fathead minnow (Pimephales promelas).},
  author={Nicola A. Beresford and Jayne V. Brian and Tamsin J. Runnalls and John P. Sumpter and Susan Jobling},
  journal={Environmental toxicology and chemistry},
  year={2011},
  volume={30 5},
  pages={1139-45}
}
Vitellogenin (VTG) is a precursor of egg-yolk protein and is therefore present at high concentrations in the plasma of female fish. In male fish, VTG concentrations are usually undetectable or low but can be induced upon exposure to estrogenic substances either via the water or the diet. This work was performed to determine the reason for the apparently elevated VTG concentrations in unexposed stock male fathead minnow maintained in our laboratory. The results showed clearly that some of the… CONTINUE READING