論文 - 詳細
| RRC ID | 233 |
|---|---|
| 著者 | Hamaguchi S, Toyazaki Y, Shinomiya A, Sakaizumi M. |
| タイトル | The XX-XY sex-determination system in Oryzias luzonensis and O. mekongensis revealed by the sex ratio of the progeny of sex-reversed fish. |
| ジャーナル | Zoolog Sci |
| Abstract |
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. |
| 巻・号 | 21(10) |
| ページ | 1015-8 |
| 公開日 | 2004-10-1 |
| DOI | 10.2108/zsj.21.1015 |
| PII | JST.JSTAGE/zsj/21.1015 |
| PMID | 15514470 |
| MeSH | Animals Estradiol / pharmacology Gonads / anatomy & histology Gonads / drug effects Hermaphroditic Organisms* Histological Techniques Methyltestosterone / pharmacology Oryzias / physiology* Phylogeny Sex Chromosomes / physiology* Sex Determination Processes* Sex Ratio* |
| IF | 0.843 |
| 引用数 | 22 |
| WOS 分野 | ZOOLOGY |
| リソース情報 | |
| メダカ | O. luzonensis (RS270) O. mekongensis |