Removal of the 850 YOY per ac was from removing every egg ribbon that I could find. There will always be a few YP ribbons in deeper water or among weeds that are missed. Expect about 20,000 to 30,000 eggs in a ribbon from a 9" YP. Males, even with an emphasis on harvesting males, will always be abundant enough to fertilize most or all the ribbons. Worst case will be only a partial 60%-80% fertilization of the ribbon as the spawn season progresses. Early egg laying usually has the best fertilization of ribbons.

Last edited by Bill Cody; 03/20/19 07:16 PM.

aka Pond Doctor & Dr. Perca Read Pond Boss Magazine -
America's Journal of Pond Management