Reza Faizbakhsh - PhD in Fisheries Economics, P.O.BOX: ۱۴۵۱۵/۶۵۳ Tehran, Iran
Elham Maghsoudloo - Science and Research Branch, Islamic Azad University, P.O.BOX: ۱۴۵۱۵-۷۵۵ Tehran, Iran
Hassan Salehi - Iranian Fisheries Research Organization, P.O.BOX: ۱۴۱۵۵-۶۱۱۶ Tehran, Iran
Homaioon Hosseinzadeh Sahafi

This project was carried out in this case study to determine some of culturemanagement indices affecting great sturgeon, Huso huso, production on sevensturgeon farms in the Caspian Sea Region of Iran from 2005 to 2008. The indiceswere studied using the Cobb-Douglas Production Function. The indices such asuseful area, fish size, weight gain, protein and fat percentage were at the 1%significance level, number of fry and feed use were at the 5%, 10% significance level,respectively. Stocking density and feed conversion ratio were non-significant. In thisregards to elasticity obtained for per variable, useful area and fish size haveelasticity> 1 and feed use has elasticity<1. Also the productivity per unit (kg/m 2 ) forfour farms is less than the standard levels in semi-intensive systems and only in threefarms, its productivity is in according to standard level in 2008. On average, everyfarm with 2,200 m 2 of culture useful area and 6,604 pieces of fish has produced 37.37tons (17.04 kg/m2 ) great sturgeon in 2008.

Sturgeon culture, Caspian Sea Region, Cobb-Douglas model, Production function, Sturgeon farm