| first evidence of endocrine disruption in feral carp from the ebro river. | feral carps (cyprinus carpio) were collected in spring 2001 from five sites along the lower course of ebro river (spain) with the aim of investigating the existence of endocrine-disrupting effects. several findings (low gonadosomatic index (gsi), plasmatic vitellogenin (vtg), depressed levels of testosterone, and histological alterations in gonads) detected in male carps downstream of zaragoza's sewage treatment plant (stp) strongly suggest that the concentration of sewage effluent in the area i ... | 2004 | 15081271 |