A Study of Factors Influencing the Hatch Rate of Penaeus vannamei Eggs. I. Effects of Size, Shape and Volume of the Spawning Tank

The hatch rate of Penaeus vannamei eggs spawned by individual females in square and round tanks and in different volumes of seawater was determined. The mean hatch rates ranged from 17.3% to 64.9% and were not significantly different for volumes of 50, 100 and 200 L nor for square or round tanks of equal water volumes. Hatch rate was significantly affected by the size of the spawning tank