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The effects of sex steroids on gonad sex differentiation of Anguilla anguilla

By Colombo G. and Grandi G.


Elvers and yellow eels 15-18 cm and 22.25 cm total length. reared in fresh water at 22.24 °C and on commercial eel food, were treated with 17-alfa-methyltestosterone (MT) and with 17-alfa-ethynilestradiol (EE) given with the diet. A very high proportion of the untreated and the MT treated eels developed as males. A significantly high proportion of the EE treated eels with e high dose (1 mg/kg of food) differentiated as females. In 22.25 cm eels the effect was weake

Topics: Anguilla anguilla, sex differentiation, steroids, gonad.
Publisher: School of Biological Sciences, Swansea, Wales
Year: 1988
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