Endocrine Abstracts

Detailed surveys of wild fish in English rivers have shown that endocrine disruption is a widespread phenomenon. Feminization of males is the effect most commonly observed. In one species of fish, the roach, 40% of the fish thought to be males show signs of endocrine disruption to varying degrees, with the evidence at different sites ranging from very low to 100%. The severity of endocrine disruption also varies, and ranges from fish with feminized reproductive ducts but no ot...