Gonad Sex Differentiation of Anguilla anguilla by Sex Steroids

• Published in: Internationale Revue der gesamten Hydrobiologie und Hydrographie
• Main Authors: COLOMBO, Giuseppe, GRANDI, Gilberto
• Other Authors: Colombo, Giuseppe, Grandi, Gilberto
• Format: Article in Journal/Newspaper
• Language: English
• Published: Akad.-Verl, Wiley-VCH. 1990
• Subjects: Anguilla anguilla; sex differentiation; hormone; gonad; histology
• Online Access: http://hdl.handle.net/11392/461821; https://doi.org/10.1002/iroh.19900750610

Anguilla anguilla elvers, reared in warm fresh water, were treated with 17 alfa-methyltestosterone (MT)' and with 17 alfa-ethynilestradiol (EE), administered with. a commerciaI diet. A very low proportion of untrented elvers developed as females. A very high proportion of the EE treated elvers developed as females and the gonads differentiated .as ovaries at an earlier growth stage. Among the MT treated elvers, in a very low proportion of eels the gonads deve1oped as ovaries, most into a undifferentiated testis-like gonad and some with abnormal histological features.