Abstract
This chapter discusses the regulations of gonadotropin-releasing hormone (GnRH) and its receptor in a teleost, red seabream. The chapter aims to reveal the mechanisms underlying the regulation of the synthesis and release of GnRH to help solve several basic and practical problems in fish reproductive physiology and aquaculture, such as the control of puberty in fish. Red seabream, Pagrus (Chysophrys) major , belongs to the order Perciformes, the largest and evolutionally the most advanced fish group. It spawns almost every day even in captivity during its spawning season, and thus, red seabream is an excellent experimental model for the reproductive biology of fish. In addition, it is one of the most important species for aquaculture in Japan. The chapter describes the achievements in studies on GnRH and GnRH receptor (GnRH-R) in red seabream and proposes possible models for the regulatory mechanisms of the onset of puberty and the seasonal reproduction of this species.
Published Version
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