S. F. Cook

The optimum stocking rate in hatchery rearing ponds was determined for female striped bass (Marone saxatilis) X male white bass (Marone chrysops) hybrid fry that would yield the highest number of fingerlings/ha of acceptable size and condition. Five fry stocking rates ranging from 494,000 to 2,470,000/ha were tested to determine the effect on number of fingerlings produced, average total length, average weight/I ,000, total weight, and condition. The optimum stocking rate was calculated to be 1,875,000 fry/ha, which would yield 537,000 fingerlings/ha. Average total length and average...

The effects of sunlight intensity on survival of Morone saxatilis X Morone chrysops hybrid fry were examined through studies performed in replicated aquaria and hatchery rearing ponds. The aquaria and ponds were exposed to direct sunlight and 2 types of sunlight reduction (overhead shading and decreased water clarity). Direct sunlight reduced fry survival in the aquaria and pond experiments. In aquaria, variations in overhead shade and water clarity significantly affected fry survival, and decreased water clarity was more effective than an increase in overhead shade in increasing survival...