Short communication: Seasonal changes of blood serum ions in Beluga (Huso huso) cultured in brackish water

• Main Authors: Alizadeh, M., Hedayati, A., Bahmani, M.
• Format: Article in Journal/Newspaper
• Language: English
• Published: 2011
• Subjects: Aquaculture; Biology; Fisheries; Osmo-ion regulation; Osmolarity; Beluga; Brackish water; Iran; Beluga*
• Online Access: http://hdl.handle.net/1834/37218

Living sturgeons (Acipenseridae) are representatives of the ancient group Chondrostei, which had a common origin with Palaeonisci, known from the Devonian period. In spite of their freshwater origin, in their history, they occupied different salinities and at present, they can live in both fresh and seawater mediums. Study of osmotic and ionic regulation in acipenserids, that connect to marine conditions in different extents (freshwater, diadromous brackish water, diadromous seawater), make it possible to establish the dependence of functional level of osmotic and ionic homeostatic mechanisms from medium salinity in some acipenserids. It was ascertained that in higher salinities, the functional level of these mechanisms increases. So investigation of osmo-ion regulation is one of the most important problems in the culture of sturgeon in new mediums.