Reference - Detail
RRC ID | 233 |
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Author | Hamaguchi S, Toyazaki Y, Shinomiya A, Sakaizumi M. |
Title | The XX-XY sex-determination system in Oryzias luzonensis and O. mekongensis revealed by the sex ratio of the progeny of sex-reversed fish. |
Journal | 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. |
Volume | 21(10) |
Pages | 1015-8 |
Published | 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 |
Times Cited | 22 |
WOS Category | ZOOLOGY |
Resource | |
Medaka | O. luzonensis (RS270) O. mekongensis |