Induction of sex inversion in juvenile grouper, Epinephelus malabaricus, (Bloch and Schneider) by bi-weekly injections of 17 alpha-methyltestosterone.
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Groupers (Family Serranidae) are protogynous hermaphrodites. Natural sex inversion of different species occurs at 2-11 years of age . The scarcity of wild mature males and the length of time to change sex underline the need to do induced sex inversion studies. In Epinephelus tauvina and E. fario, sex inversion was successfully induced by oral administration of 17 alpha-methyltestosterone (MT). This paper reports on the induction of sex inversion of juvenile grouper E. malabaricus using bi-weekly intramuscular injections of MT.
Tan-Fermin, J. D., Garcia, L. M. B., & Castillo Jr., A. R. (1989). Induction of sex inversion in juvenile grouper, Epinephelus malabaricus, (Bloch and Schneider) by bi-weekly injections of 17 alpha-methyltestosterone. In D. K. O. Chan (Ed.), Hormones and the Environment. Proceedings of an International Symposium held at University of Hong Kong, 18-20 December 1989 (pp. 19–20). Hong Kong: Society for the Study of Endocrinology, Metabolism and Reproduction, University of Hong Kong.
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