Gonadal hormone-dependent changes in the concentrations of sialic acid and fructose in the seminal glomus and of glycogen in the oviduct of the Indian pied myna.

Sialic acid and fructose contents of the seminal glomus and glycogen content of the oviduct were estimated in the normal, gonadectomized, and gonadectomized plus sex steroid (testosterone in male and estradiol in female birds)-treated Indian pied myra, Sturnus contra contra. The levels of these substances declined on the sixth day after gonadectomy; sex steroid administration increased the level of these substances in gonadectomized birds. The findings indicate that the concentration of these substances in the accessory reproductive organs in the Indian pied myna are influenced by the respective gonadal hormones.