Novel pituitary actions of GnRH in teleost: the link between reproduction and feeding regulation

Gonadotropin-releasing hormone (GnRH), as a vital hypothalamic neuropeptide, was a key regulator for pituitary luteinizing hormone (LH) and follicle-stimulating hormone (FSH) in the vertebrate. However, little is known about the other pituitary actions of GnRH in teleost. In the present study, two GnRH variants (namely GnRH2 and GnRH3) and four GnRH receptors (namely GnRHR1, GnRHR2, GnRHR3 and GnRHR4) had been isolated from grass carp.