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首页> 外文期刊>Zoological Science >Expression levels of hormone receptors and bone morphogenic protein in fins of medaka
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Expression levels of hormone receptors and bone morphogenic protein in fins of medaka

机译：aka翅中激素受体和骨形态发生蛋白的表达水平

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摘要

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) beta expression levels in the dorsal and anal fins were higher in females than in males. AR and ERbeta 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.
机译：在Oryzias属中，背鳍和肛门鳍的形态是典型的次要性特征。在日本花aka（Oryzias latipes）和泰国花aka（Oryzias minutillus）中，雄性背鳍，肛门鳍和胸鳍中雄激素受体（AR）的表达水平高于雌性。相反，在这两种物种中，雌性背鳍和肛门鳍中的雌激素受体（ER）β表达水平均高于雄性。性别不明的泰国的个体的背鳍和肛门鳍中的AR和ERbeta表达水平介于正常泰国和雌泰国med之间。男性和女性日本之间的骨形态发生蛋白（Bmp）2b表达水平没有差异。相反，性别不确定的个体的背鳍中的Bmp2b表达水平低于正常的男性和女性的泰国med。因此，很明显雄激素和雌激素调节着两个稻属物种的鳍形态的性别依赖性。在泰国性别人群中性别不确定的个体中，背鳍中Bmp2b的表达水平较低，这证明雄激素和雌激素至少在背鳍的正常发育中对于Bmp2b的充分表达是必需的。

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