Induction of Vitellogenin Synthesis by Nonylphenol and 17β -Estradiol and Effects on the Testicular Structure in the Eelpout Zoarces viviparus

摘要

In the present study the effect of nonylphenol ro 17β-estradiol in vitellogenin synthesis and testicular structure was investigated in male eelpouts Zoarces viviparous during active spermatogenesis (May) and at late spermatogenesis (June). Nonylphenol or estradiol treatment resulted in a significant increase in the plasma vitellogenin concentration concomitant with significant reduction in the gonadosomatic index. Histological examination revealed severe effects on the testis.