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Tributyltin-oxide (TBTO) induced Changes in Plasma Sex Steroid Hormones and Cortisol Level of Korean Rockfish, Sebastes schlegeli  

Eun- Young Min (Department of Aquatic Life Medicine, Pukyong National University)
Lee, Jung-Hoon (Institute of fisheries Sciences, Pukyong National University)
Kim, Dae-Jung (Aquaculture Division, National Fisheries Research ＆ Development Institut)
Kang, Ju-Chan (Department of Aquatic Life Medicine, Pukyong National University)
Publication Information
Journal of Aquaculture / v.17, no.3, 2004 , pp. 161-166 More about this Journal
Abstract
The influence of TBTO (Tributyltin-Oxide) at a series of concentrations (0.52, 1.41 and 3.05 $\mu$g/L) for a period of 3 weeks on estradiol-17$\beta$, testosterone and cortisol levels in male Korean rockfish, Sebastes schlegeli was investigated. Compared to the stable concentration of estradiol-17$\beta$, plasma testosterone level was decreased significantly at the 3rd week after TBTO exposure in plasma of fish (＞1.41 $\mu$g/L). The most profound physiological variation in TBTO exposed fish was a dramatic increase in plasma cortisol level at 3rd week. Conclusively, TBTO exposure caused increase level of cortisol as well as alteration of testosterone in the Korean rockfish. These results suggest that TBTO at environmentally relevant (nanomolar) concentrations disrupt endocrine secretions.
Keywords
Cortisol; Steroid hormones; Sebastes schlegeli; Tributyltin-Oxide;
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