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Inter- and Intraspecific Variation in Sex Hormone-Induced Sex-Reversal in Medaka, Oryzias latipes and Oryzias sakaizumii.

Zoological science - 1 Oct 2019

Myosho Taijun, Sato Tadashi, Nishiyama Hiroka, Watanabe Akiho, Yamamoto Jun, Okamura Tetsuro, Onishi Yuta, Fujimaki Rei, Hamaguchi Satoshi, Sakaizumi Mitsuru, Kobayashi Tohru

Abstract excerpt

We compared sex-reversal ratios induced by 17α-methyltestosterone (MT) and 17β-estradiol (E2) exposure in two inbred medaka strains: Hd-rR derived from Oryzias latipes and HNI-II from O. sakaizumii. All MT exposures (0.2-25 ng mL-1) induced complete XX sex-reversal in HNI-II. Although MT exposure at 0.2 ng mL-1 induced XX sex-reversal at > 95% in Hd-rR, other concentrations tested caused XX sex-reversal at lower...

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PMID: 33319967
DOI: 10.2108/zs180194

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