BACKGROUND: Hematological studies are valuable diagnostictechniques in the medical care of fish, reflecting the healthcondition and the effects of environmental factors on fish. OBJECTIVES:Due to the high value of sturgeon fish and necessityto recover the brood stock, this study was done to provide dataabout hematological parameters and reproduction normative ofwild brood stock beluga, Huso hus...

This review briefly highlights previous studies on the gonadotropin-releasing hormone (GnRH) and its approaches to improving fish reproduction in aquaculture industry. Reproductive system dysfunction of captive is main problem that has be treated depending compatibility species. caused by non-synchronized maturation female male broodstock, low quality broodstock. As shown studies, induced breed...

Most vertebrates living outside the tropical zone show robust physiological responses in response to seasonal changes in photoperiod, such as seasonal reproduction, molt, and migration. The highly sophisticated photoperiodic mechanism in Japanese quail has been used to uncover the mechanism of seasonal reproduction. Molecular analysis of quail mediobasal hypothalamus (MBH) revealed that local t...