The XX-XY Sex-determination System in Oryzias luzonensis and O. mekongensis Revealed by the Sex Ratio of the Progeny of Sex-reversed Fish(Genetics)

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概要

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• The sex-determining gene in Oryzias latipes and O. curvinotus has been proved to be DMY. Although O. curvinotus has the DMY gene on the Y chromosome which is homologous to the Y chromosome of O. latipes, the sex-determining mechanism of other Oryzias fishes has not been identified. In order to uncover the sex-determining mechanism of O. luzonensis and O. mekongensis, which are most closely related species to O. latipes and O. curvinotus, we analyzed the sex ratio of the progeny of sex-reversed fish. We were able to obtain sex-reversed males by the administration of methyltestosterone, and found that these yielded all-female offspring in both species. These results indicate that O. luzonensis and O. mekongensis have the XX-XY sex-determination system.

• 社団法人日本動物学会の論文
• 2004-10-25

著者

• 浜口 智志

  大阪大学大学院工学研究科原子分子イオン制御理工学センター

• HAMAGUCHI Satoshi

  Graduate School of Energy Science, Kyoto University

• Sakaizumi Mitsuru

  Graduate School of Science and Technology, Niigata University

• Hamaguchi Satoshi

  Niigata Univ. Niigata Jpn

• Hamaguchi S

  Niigata Univ. Niigata Jpn

• Hamaguchi Satoshi

  Environmental Science And Technology Graduate School Of Science And Technology Niigata University

• Hamaguchi S.

  Dept. Of Environ. Sci. Fac. Of Sci. Niigata Univ.

• Sakaizumi M

  Dep. Of Environmental Sci. Fac. Of Sci. Niigata Univ.

• Sakaizumi Mitsuru

  Environmental Science And Technology Graduate School Of Science And Technology Niigata University

• Sakaizumi Mitsuru

  Graduate School Of Science And Technology Niigata University

• Sakaizumi Mitsuru

  Graduate School Of Science And Technology Niigata University:department Of Environmental Science Fac

• Shinomiya Ai

  Department of Environmental Science, Faculty of Science, Niigata University

• Shinomiya Ai

  Graduate School of Science and Technology, Niigata University

• Toyazaki Y

  Graduate School Of Science And Technology Niigata University

• Toyazaki Yota

  Graduate School Of Science And Technology Niigata University

• Shinomiya A.

  Graduate School Of Science And Technology Niigata University

• Toyozaki Yota

  Graduate School of Science and Technology, Niigata University

• Toyozaki Yota

  Graduate School Of Science And Technology Niigata University

• Hamaguchi Satoshi

  Graduate School Of Energy Science Kyoto University

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