{"refrec":{"BRefID":4240,"RR":"<b>Rowell, C.B.; Mair, G.C.; Hines, G.A.; Wibbels, T.; Watts, S.A.</b> (2000). Characterization of androstenedione and 17ß-estradiol metabolism during the proposed critical period of sex differentiation in the tilapia <i>Oreochromis niloticus</i>, <b><i>in</i></b>: Norberg, B. <i>et al.</i> (Ed.) <i>Proceedings of the 6th International Symposium on the Reproductive Physiology of Fish, Bergen, Norway, July 4-9, 1999.</i> pp. 264","BEntID":4240,"PublicFlag":1,"CheckedFlag":0,"wosflag":null,"vabbflag":null,"RefStringPartII":", <b><i>in</i></b>: Norberg, B. <i>et al.</i> <i>Proceedings of the 6th International Symposium on the Reproductive Physiology of Fish, Bergen, Norway, July 4-9, 1999. International Symposium on the Reproductive Physiology of Fish,</i> 6: pp. 264","DocTypID":17,"DocType":"Book chapters","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Rowell, C.B.; Mair, G.C.; Hines, G.A.; Wibbels, T.; Watts, S.A.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Rowell, C.B. <i>et al.</i>","Englishabstract":"Homogenates derived from mono-sex populations, including XX, XY and YY genotypes, of sexually differentiating 8-13 day post fertilization (dpf) fish were incubated with super(3)H-androstenedione or super(3)h<sup>-1</sup>7 beta -estradiol. Androstenedione was metabolized into at least seven readily identifiable compounds. During this period, testosterone production increased 2 to 3 fold in the XY genotype, but did not increase in XX genotypes, suggesting a sex-specific difference in testosterone synthesis. 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