“…numerous chemical substances, including estrogens and alkylphenols, tend to concentrate as glucuronide and sulfate conjugates in fish bile (Larsson et al, 1999;Ferreira-Leach and Hill, 2001;Legler et al, 2002;Pedersen and Hill, 2002). Moreover, analysis of fish bile, representative of recent exposure to bioavailable contaminants, was employed to identify and quantify polycyclic aromatic hydrocarbons (Ruddock et al, 2003;Johnson-Restrepo et al, 2008), chlorinated phenols (Brumley et al, 1998), resin, and fatty acids from pulp and paper mill effluents (Leppänen et al, 1998). Finally, a good correlation (r = 0.81 and p = 0.0002) was found between the bile E2 activity equivalents (EEQs) concentration and plasma vitellogenin induction in male bream, demonstrating that occurrence of biliary xenoestrogens can be an indication of internal exposure to these compounds (Legler et al, 2002).…”