in this study, 54 five-year-old farmed female beluga at stage ii of sexual maturation were treated with 0 (control), 0.2, 0.4, 0.8 and 1.6 g of dietary soy equol (eq) and genistein (ge) per each kilogram (kg) of diet during a year. blood samples were collected and ovarian biopsy was performed quarterly. results showed that 64.4% of the huso huso sexually matured at eq 0.4 g/kg and reached stage...

the present study examined the effects of vitacel raw fiber on great sturgeon (huso huso) immunocompetent cell population size including lymphocyte and neutrophil populations and lysozyme activity after oral administration of the feed and vitacel at 1.3% of the feed for 90 days. generally, a significant increase was seen in the neutrophil count of fish receiving vitacel as compared to the contr...

In Caspian Sea basin, sturgeons spend the larval and juvenile stages in freshwaters of rivers and then, they migrate to brackish waters of the sea where they grow and mature. With regard to the elevation of the metal concentrations in coastal waters and sediments of the Caspian Sea and its adjacent rivers, it is likely that juvenile sturgeon are exposed to sub-lethal levels of metals during sea...

Glial cells missing 2 (gcm2) encoding a GCM-motif transcription factor is expressed in the parathyroid in amniotes. In contrast, gcm2 is expressed in pharyngeal pouches (a homologous site of the parathyroid), gills, and H(+)-ATPase-rich cells (HRCs), a subset of ionocytes on the skin surface of the teleost fish zebrafish. Ionocytes are specialized cells that are involved in osmotic homeostasis ...

by decreasing of sturgeon stocks in the caspian sea, the culture of different sturgeon species especially huso huso was increased in iran. under stress conditions sturgeon can easily be infected by several opportunistic pathogens. in june 2011, mortality happened in 25-28°c water temperature, in one of the most important cultured sturgeon farms in mazandaran province in the north of iran. the m...