Publication: Expression levels of hormone receptors and bone morphogenic protein in fins of medaka
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Issued Date
2009
Resource Type
File Type
application/pdf
ISSN
2890003
Other identifier(s)
2-s2.0-60949113545
Rights Holder(s)
มหาวิทยาลัยศรีนครินทรวิโรฒ
Bibliographic Citation
Zoological Science. Vol 26, No.1 (2009), p.74-79
Suggested Citation
Ngamniyom A., Magtoon W., Nagahama Y., Sasayama Y. Expression levels of hormone receptors and bone morphogenic protein in fins of medaka. Zoological Science. Vol 26, No.1 (2009), p.74-79. doi:10.2108/zsj.26.74 Retrieved from: https://hdl.handle.net/20.500.14740/3708
Author(s)
Abstract
In the genus Oryzias, the morphologies of the dorsal and anal fins are typical secondary sex characters. In the Japanese medaka (Oryzias latipes) and Thai medaka (Oryzias minutillus), androgen receptor (AR) expression levels in the dorsal, anal, and pectoral fins were higher in males than in females. Conversely, in both species estrogen receptor (ER) β expression levels in the dorsal and anal fins were higher in females than in males. AR and ERβ expression levels in the dorsal and anal fins of sex-undeterminable individuals of Thai medaka were intermediate between those in normal male and female Thai medaka. There was no difference in the bone morphogenic protein (Bmp) 2b expression level between male and female Japanese medaka. In contrast, the Bmp2b expression level in the dorsal fin of sex-undeterminable individuals was lower than in normal male and female Thai medaka. It is thus clear that androgen and estrogen regulate the sex-dependent characters of fin morphology in both Oryzias species. In sex-undeterminable individuals of Thai medaka, the low levels of Bmp2b expression in the dorsal fin are evidence that androgen and estrogen are necessary for adequate expression of Bmp2b in the normal development of at least the dorsal fin. © 2009 Zoological Society of Japan.
Subject(s)
Androgen receptor
Bone morphogenetic protein 2
Estrogen receptor beta
Messenger RNA
Animal
Article
Classification
Female
Gene expression regulation
Genetics
Limb
Male
Metabolism
Oryzias
Physiology
Sexual development
Animals
Bone Morphogenetic Protein 2
Estrogen Receptor beta
Extremities
Female
Gene Expression Regulation
Male
Oryzias
Receptors, Androgen
RNA, Messenger
Sex Characteristics
Oryzias
Oryzias latipes
Oryzias minutillus
Oryziinae
Bone morphogenetic protein 2
Estrogen receptor beta
Messenger RNA
Animal
Article
Classification
Female
Gene expression regulation
Genetics
Limb
Male
Metabolism
Oryzias
Physiology
Sexual development
Animals
Bone Morphogenetic Protein 2
Estrogen Receptor beta
Extremities
Female
Gene Expression Regulation
Male
Oryzias
Receptors, Androgen
RNA, Messenger
Sex Characteristics
Oryzias
Oryzias latipes
Oryzias minutillus
Oryziinae