EFFECT OF DENSITY ON EGGS AND LARVAL STAGE SURVIVAL DURING INCUBATION IN IRANIAN STURGWEON (Acipenser persicus)

This study was performed in month of May year 1388 project where sturgeon breeding and reproduction complex Shahid Beheshti for appropriate review Asipencer persicus Iranian sturgeun egg density (Acipenser persicus) in incubation stage and its effect on egg and backwardness in the Larva Yushchenko incubator. This order to study a density of 4 gr 450,600,800,1000 and repeated 3 times for each density of each assembly and considering congestion control as 450 gr, were used. Reviews indicate that the highest percentage of backwardness in Yushchenko incubator, the average density of 450 g percent and 57/38 percent hindrance lowest in hindrance Yushchenko incubator, the average density of 1000 gr percent hindrance is 27/01 percent. This study shows that mortality due to fungal percent scurry incubation stage is high level to the lowest unit scurry casualties caused by fungus, the average density of 450 gr with number 1830/33 and Most casualties caused by the fungus scurry Picks 1000 gr is the average number 7269/66. Results of these investigations that the percentage expression of backwardness incubation density ratio is reversed so that the percentage of egg fertilization results in the hindrance incubation with increasing density, and decreased with decreasing density, is increased.

Iranian sturgeun, (Acipenser persicus), incubation, egg survivors, density