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In streams, chemicals such as 17β-estradiol (E2) are likely to occur in pulses. We investigated uptake and biomarker responses in juvenile brown trout (Salmo trutta) of 3- or 6-h pulses of concentrations up to 370 ng E2 L −1 . Uptake by the fish was estimated from disappearance of E2 from tank water. A single 6-h pulse of 370 ng E2 L −1 increased the plasma vitellogenin concentration,...
Estrogenic alkylphenols have been shown to affect the reproductive system of male fish causing induction of vitellogenin synthesis and altered testis structure. However, it is still unknown whether the histopathological effects on the testes is mediated by the estrogen receptor or if it represent general toxicopathological effects.In the present study, the effects of different concentrations of the...
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