웅성 선숙형 해산 어류인 감성돔에게 를 경구 투여하여 성스테로이드인 testosterone(T), 및 cortisol 수준의 변화와 생식소 발달을 조사하였다. 외인성 는 사육 60일째 감성돔의 혈장 T의 수준을 유의하게 상승시켰으나, 혈장 및 난모세포의 크기에는 영향을 미치지 못하였다. 또한 처리는 생식소 내 정소 발달과 정자 형성과정을 촉진시켰으며, 정자 방출 기간을 연장하는 것으로 나타났다. 를 처리한 실험구에서 60일째에 혈장 cortisol 수준

The objective of the present study was to investigate changes of sex steroid(testosterone: T and ), cortisol levels and gonadal development following treatment to protandrous black porgy, Acanthopagrus schlegeli. Exogenous was found to significantly stimulate the increase of T levels in plasma of black porgy after 60 days of treatment. However no effects of on levels and oocyte size were found. treatment resulted in stimulated spermatogenesis and testicular development in gonad and prolonged spermiation. Also, the levels of cortisol were significantly increased in the fish treated with as compared to control fish at 60 days. The results showed that exogenous had direct effect on the release of T and cortisol, thus seems to play, either directly or indirectly, an important role in the testis development of functional male black porgy.

• 민병화
• 노경언
• 정민환
• 장영진