排卵期雌性金鱼释放的信息素会促使雄性金鱼促性腺激素激增。

Pheromone from ovulatory female goldfish induces gonadotropin surge in males.

作者信息

Kobayashi M, Aida K, Hanyu I

出版信息

Gen Comp Endocrinol. 1986 Sep;63(3):451-5. doi: 10.1016/0016-6480(86)90145-0.

Abstract

Characterization was made of the female stimuli which induce male gonadotropin (GtH) surge during spawning in the goldfish. In the presence of ovulatory females, olfactory tract sectioned (OTX) males failed to show sexual behavior or the GtH surge, while sham-operated (sham) males spawned and showed a GtH surge. When OTX and sham males were separated from ovulatory females with an opaque partition but with water circulating between male and female compartments, the GtH surge occurred only in sham males, although they could not court with the females. These results indicate that an olfactory stimulus (pheromone) from ovulatory females is essential to the occurrence of male GtH surge. Pheromone(s) from ovulatory female goldfish thus functions both as a releaser stimulating sexual behavior and as a primer inducing GtH surge in males.

摘要

对金鱼产卵期间诱导雄性促性腺激素（GtH）激增的雌性刺激因素进行了特征分析。在有排卵雌性存在的情况下，切断嗅束（OTX）的雄性未能表现出性行为或GtH激增，而假手术（sham）的雄性则产卵并出现GtH激增。当用不透明隔板将OTX雄性和假手术雄性与排卵雌性隔开，但雌雄隔间之间有水循环时，GtH激增仅发生在假手术雄性中，尽管它们无法与雌性交配。这些结果表明，来自排卵雌性的嗅觉刺激（信息素）对于雄性GtH激增的发生至关重要。因此，排卵雌性金鱼的信息素既作为刺激性行为的释放因子，又作为诱导雄性GtH激增的启动因子。